Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?

[Larson]

@NeverDie I recognized the KD image as soon as I saw it. I'll watch... again... after dinner. Yes, the battery economics depend on time and power as you say. One of the tricks I have learned is aggregating data at the MCU level in RTC memory. I'm using both a 328 and an ESP; each dedicated to it's task. When 20 samples (minutes of data) are gathered the MCU wakes the ESP so it can bulk-load data to Thingspeak. This economizes the cost of the ESP wake-up by a factor of 20. This is all for my water-meter monitoring project. It has been fun stuff and I've learned a bunch. And I'm not using ESP-NOW because I'm going directly from the ESP transmitter to my home network - so I could do even better if I injected an ESP repeater that would transmit to the network. I think my wake-up/network-connection is about 8 seconds.

We have strayed far away from your initial "anyone-useing..." post. I hope that is okay?

[NeverDie]

@Larson said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

We have strayed far away from your initial "anyone-useing..." post. I hope that is okay?

Yes, it's fine. I'll be testing the E28-2G4M27S once more after my JLCPCB's arrive.

[NeverDie]

The PCB's arived today, about 1 week after I placed the order. I already put together one mote:

It nicely fits the footprint of two AA batteries. I'll be running some tests soon and hopefully getting definitive answers.

By the way, the flashing green LED is being driven by Arduino Pin 20. :smile:

[NeverDie]

Mea Culpa. I found a mistake in my original setup which may explain at least some of the poor performance. I had thought that both my usb-to-serial converters were operating at 3.3v, but I noticed during disassembly that one was operating at 5v instead. Even though I was using pro mini's with 3.3v LDO's on them, it turns out that the 3.3v LDO only functions when the voltage is being fed to the pro mini over the RAW pin (which is never in my setup). Instead, the usb-to-serial converter fed its 5v directly to VCC over the header pin, and from there directly to the radio module. Although I did later do experiments where the entire setup was being run off of 3v of battery only, it may be that the radio module was already damaged by then.

I wouldn't be surprised if others besides just me have fallen into this same trap, as it might be natural to assume that a "3.3v pro mini" regulates all of its voltage sources to be 3.3v. However, such is not the case, as confirmed by checking the schematic.

So, to remove all doubt, I'll use brand new radio modules when testing with this new test setup, which won't be using pro mini's at all this time around. It turns out my barebones atmega328p design works just fine, and this way I have total control over the quality of all the components going into it, including X7R on all the capacitors (whereas who knows exactly what quality of components are used on pro mini's).

[NeverDie]

Here's an end-view of the test platform:

As you can see, I wouldn't want the batteries to be any closer together than they already are, or they would likely short out between them. As it stands, they're firmly in place, so no worries for now. These kinds of placement tolerance issues are hard to vet in advance prior to building a prototype. The keystone datasheet gave no guidance at all on side by side positioning. If I were to do it over, I think I'd give it another millimeter or two of safety factor separation.

Of bigger concern is the switch placement. A side mounted switch might be too tight a fit because of the battery connectors. On the other hand, the existing vertical switch can potentially can get in the way of things, so I may try mounting it upside down on the battery side. This would make it less accessible than it currently is, but, at the same time, it wouldn't get bumped by accident either. I reckon that with the aid of an insulated paperclip, or maybe a chop-stick, it should be possible to turn it on-off even in the more cramped position. Probably a more correct solution would be a surface mounted side-switch that's tiny but somehow good enough to carry 600ma+ currents. Finding such a thing may take some searching though, assuming it exists at all.

In a perfect world, the radio module, if it were to use its trace antenna, would be hanging over the end of the base PCB below. Part of the reason it wasn't was out of concern as to whether the breakout board might collide with the switch. Well, with the new switch position, that won't be a worry, so if I create a new version of the breakout board for the radio module, I'd make it so that the radio module has its trace antenna hang out over the end of not just the breakout adapter, but the end of the test platform as well.

I normally use regular headers, but out of an interest in making the whole thing more compact, and for snugger connections, I made a last minute decision to use machine pin headers instead. This was after the board had already been fab'd to use regular headers. If I were to do it over, I would have bigger diameter through-holes drilled into the PCB in order to seat the machine pin female headers properly. I'll do that in the next version I get fab'd, assuming there is a next version.

At the opposite end there's space to add a pico-blade for the FTDI attachment. If that works, then in a future design there will be space for extending a few more pins out from the MCU, making for a more complete universal test platform. For present testing purposes, though, things are good enough as they are.

If anyone reading this has any further thoughts or suggestions, please feel free to jump in and post them. I find it's less fun to do everything single handedly.

[NeverDie]

@Larson said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

@NeverDie said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

In its favor is that at 40na the sleep current...

I'll order several. Then compare to the TrigBoards. Adafruit's TPL5011 advertises a run current of 20uA. Is that acceptable for you? If so I'll buy several. Couple of limitations for me: 1. Time - I'm about a month out, 2. My Ammeter is a standard DMM from Harbor Freight. The smallest range is 200uA and I've found it very useful. Certainly fine enough to show the 20uA, but inadequate for nanoAmps.

I don't see any uCurrent Gold's for sale at the moment, but I did find a clone of it, which has what looks like a nice improvement over the original: you can plug it directly into an oscilloscope via its BNC connector.

https://www.n-fuse.co/devices/tinyCurrent-precision-low-Current-Measurement-Shunt-and-Amplifier-Device.html
or
https://github.com/nfhw/tinycurrent
as it is open source.

I temporarily misplaced my Dave Jones uCurrent Gold that I bought from him directly during his Kickstarter campaign. However, if I can't locate it soon, I may be either buying or making one of these tinyCurrent's to take advantage of the built-in BNC connector.

[NeverDie]

Reporting back: Problem solved!

Using two of the new test nodes, one in transmit and the other in receive, and each using a brand new E28-2G4M27S with just the trace antenna only, and with the default library settings for each, and with the transmit node in a different room with two closed doors in-between (exactly as before, with the initial testing at the start of this thread), I'm now getting the kind of flawless communication that I had expected all along from LoRa on the 2.4Ghz band:

12:23:12 May 18 2022
V1.0

104_LoRa_Receiver_Detailed_Setup Starting

LoRa Device found

SX1280,PACKET_TYPE_LORA,2444999936hz,SF7,BW406250,CR4:5
SX1280,PACKET_TYPE_LORA,Preamble_12,Explicit,PayloadL_255,CRC_ON,IQ_NORMAL,LNAgain_HighSensitivity

Reg    0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
0x900  80 FF 77 41 20 FA BC 13 C1 80 00 00 00 00 00 61 
0x910  9C 44 00 00 00 19 00 00 00 19 87 65 43 21 7F FF 
0x920  FF FF FF 00 70 37 12 50 D0 80 00 C0 5F D2 8F 0A 
0x930  00 C0 00 00 00 24 00 21 28 B0 30 0D 01 51 63 0C 
0x940  58 0B 32 0A 16 24 6B 96 00 18 00 00 00 00 00 00 
0x950  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x960  00 00 00 00 00 00 00 00 00 00 FF FF FF FF FF FF 
0x970  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 04 
0x980  00 0B 18 70 00 00 00 4C 00 F0 64 00 00 00 00 00 
0x990  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9A0  00 08 EC B8 9D 8A E6 66 04 00 00 00 00 00 00 00 
0x9B0  00 08 EC B8 9D 8A E6 66 04 00 00 00 00 00 00 00 
0x9C0  00 16 00 3F E8 01 FF FF FF FF 5E 4D 25 10 55 55 
0x9D0  55 55 55 55 55 55 55 55 55 55 55 55 55 00 00 00 
0x9E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 


Receiver ready - RXBUFFER_SIZE 32

5s  Hello World 1234567890*,CRC,DAAB,RSSI,-54dBm,SNR,10dB,Length,23,Packets,1,Errors,0,IRQreg,8012
9s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,14dB,Length,23,Packets,2,Errors,0,IRQreg,8012
13s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,10dB,Length,23,Packets,3,Errors,0,IRQreg,8012
18s  Hello World 1234567890*,CRC,DAAB,RSSI,-58dBm,SNR,13dB,Length,23,Packets,4,Errors,0,IRQreg,8012
22s  Hello World 1234567890*,CRC,DAAB,RSSI,-56dBm,SNR,14dB,Length,23,Packets,5,Errors,0,IRQreg,8012
26s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,13dB,Length,23,Packets,6,Errors,0,IRQreg,8012
30s  Hello World 1234567890*,CRC,DAAB,RSSI,-53dBm,SNR,9dB,Length,23,Packets,7,Errors,0,IRQreg,8012
34s  Hello World 1234567890*,CRC,DAAB,RSSI,-51dBm,SNR,8dB,Length,23,Packets,8,Errors,0,IRQreg,8012
38s  Hello World 1234567890*,CRC,DAAB,RSSI,-54dBm,SNR,13dB,Length,23,Packets,9,Errors,0,IRQreg,8012
42s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,14dB,Length,23,Packets,10,Errors,0,IRQreg,8012
46s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,13dB,Length,23,Packets,11,Errors,0,IRQreg,8012
50s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,12dB,Length,23,Packets,12,Errors,0,IRQreg,8012
54s  Hello World 1234567890*,CRC,DAAB,RSSI,-56dBm,SNR,9dB,Length,23,Packets,13,Errors,0,IRQreg,8012
58s  Hello World 1234567890*,CRC,DAAB,RSSI,-59dBm,SNR,9dB,Length,23,Packets,14,Errors,0,IRQreg,8012
62s  Hello World 1234567890*,CRC,DAAB,RSSI,-59dBm,SNR,13dB,Length,23,Packets,15,Errors,0,IRQreg,8012
66s  Hello World 1234567890*,CRC,DAAB,RSSI,-61dBm,SNR,13dB,Length,23,Packets,16,Errors,0,IRQreg,8012
70s  Hello World 1234567890*,CRC,DAAB,RSSI,-57dBm,SNR,13dB,Length,23,Packets,17,Errors,0,IRQreg,8012
75s  Hello World 1234567890*,CRC,DAAB,RSSI,-54dBm,SNR,14dB,Length,23,Packets,18,Errors,0,IRQreg,8012
79s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,14dB,Length,23,Packets,19,Errors,0,IRQreg,8012
83s  Hello World 1234567890*,CRC,DAAB,RSSI,-54dBm,SNR,13dB,Length,23,Packets,20,Errors,0,IRQreg,8012

Notice that now both the RSSI is very good and the SNR is very high as compared to when I was having trouble with the earlier setup.

The E28-2G4M27S is vindicated. Case closed! :smiley:

[NeverDie]

Epilog: I hooked up the old receiver, with its external antenna, to the new mote, and it's not obviously worse for the wear:

12:23:12 May 18 2022
V1.0

104_LoRa_Receiver_Detailed_Setup Starting

LoRa Device found

SX1280,PACKET_TYPE_LORA,2444999936hz,SF7,BW406250,CR4:5
SX1280,PACKET_TYPE_LORA,Preamble_12,Explicit,PayloadL_255,CRC_ON,IQ_NORMAL,LNAgain_HighSensitivity

Reg    0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
0x900  80 FF 77 41 20 FA BC 13 C1 80 00 00 00 00 00 61 
0x910  9C 44 00 00 00 19 00 00 00 19 87 65 43 21 7F FF 
0x920  FF FF FF 00 70 37 12 50 D0 80 00 C0 5F D2 8F 0A 
0x930  00 C0 00 00 00 24 00 21 28 B0 30 0D 01 51 63 0C 
0x940  58 0B 32 0A 16 24 6B 96 00 18 00 00 00 00 00 00 
0x950  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x960  00 00 00 00 00 00 00 00 00 00 FF FF FF FF FF FF 
0x970  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 04 
0x980  00 0B 18 70 00 00 00 4C 00 F0 64 00 00 00 00 00 
0x990  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9A0  00 08 EC B8 9D 8A E6 66 04 00 00 00 00 00 00 00 
0x9B0  00 08 EC B8 9D 8A E6 66 04 00 00 00 00 00 00 00 
0x9C0  00 16 00 3F E8 01 FF FF FF FF 5E 4D 25 10 55 55 
0x9D0  55 55 55 55 55 55 55 55 55 55 55 55 55 00 00 00 
0x9E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 


Receiver ready - RXBUFFER_SIZE 32

4s  Hello World 1234567890*,CRC,DAAB,RSSI,-57dBm,SNR,12dB,Length,23,Packets,1,Errors,0,IRQreg,8012
8s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,13dB,Length,23,Packets,2,Errors,0,IRQreg,8012
12s  Hello World 1234567890*,CRC,DAAB,RSSI,-57dBm,SNR,13dB,Length,23,Packets,3,Errors,0,IRQreg,8012
16s  Hello World 1234567890*,CRC,DAAB,RSSI,-57dBm,SNR,12dB,Length,23,Packets,4,Errors,0,IRQreg,8012
20s  Hello World 1234567890*,CRC,DAAB,RSSI,-54dBm,SNR,9dB,Length,23,Packets,5,Errors,0,IRQreg,8012
24s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,3dB,Length,23,Packets,6,Errors,0,IRQreg,8012
29s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,11dB,Length,23,Packets,7,Errors,0,IRQreg,8012
33s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,13dB,Length,23,Packets,8,Errors,0,IRQreg,8012
37s  Hello World 1234567890*,CRC,DAAB,RSSI,-50dBm,SNR,12dB,Length,23,Packets,9,Errors,0,IRQreg,8012
41s  Hello World 1234567890*,CRC,DAAB,RSSI,-53dBm,SNR,13dB,Length,23,Packets,10,Errors,0,IRQreg,8012
45s  Hello World 1234567890*,CRC,DAAB,RSSI,-56dBm,SNR,14dB,Length,23,Packets,11,Errors,0,IRQreg,8012
49s  Hello World 1234567890*,CRC,DAAB,RSSI,-53dBm,SNR,8dB,Length,23,Packets,12,Errors,0,IRQreg,8012
53s  Hello World 1234567890*,CRC,DAAB,RSSI,-51dBm,SNR,3dB,Length,23,Packets,13,Errors,0,IRQreg,8012
57s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,8dB,Length,23,Packets,14,Errors,0,IRQreg,8012
61s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,12dB,Length,23,Packets,15,Errors,0,IRQreg,8012
65s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,11dB,Length,23,Packets,16,Errors,0,IRQreg,8012
69s  Hello World 1234567890*,CRC,DAAB,RSSI,-52dBm,SNR,13dB,Length,23,Packets,17,Errors,0,IRQreg,8012
73s  Hello World 1234567890*,CRC,DAAB,RSSI,-50dBm,SNR,13dB,Length,23,Packets,18,Errors,0,IRQreg,8012
77s  Hello World 1234567890*,CRC,DAAB,RSSI,-51dBm,SNR,13dB,Length,23,Packets,19,Errors,0,IRQreg,8012
82s  Hello World 1234567890*,CRC,DAAB,RSSI,-55dBm,SNR,12dB,Length,23,Packets,20,Errors,0,IRQreg,8012
86s  Hello World 1234567890*,CRC,DAAB,RSSI,-56dBm,SNR,7dB,Length,23,Packets,21,Errors,0,IRQreg,8012
90s  Hello World 1234567890*,CRC,DAAB,RSSI,-57dBm,SNR,13dB,Length,23,Packets,22,Errors,0,IRQreg,8012
94s  Hello World 1234567890*,CRC,DAAB,RSSI,-56dBm,SNR,13dB,Length,23,Packets,23,Errors,0,IRQreg,8012
98s  Hello World 1234567890*,CRC,DAAB,RSSI,-48dBm,SNR,6dB,Length,23,Packets,24,Errors,0,IRQreg,8012

One thing I do notice,though, when reviewing the receive packet data, with both the new and old radios are considerable variances in SNR. The 915Mhz adafruit transceivers don't show much variance (see earlier post for the telemetry). I presume, therefore, the larger SNR variances are caused by environmental interference that varies over time in the 2.4Ghz band, or at least the default channel in that band chosen by the library.

The end! :smile:

[NeverDie]

Putting a Yagi antenna on this, one could perhaps gather data pointing to where the interference sources are located by backing out the "noise" value from the RSSI and SNR data collected.

[NeverDie]

One last thing to try: to eliminate the possibility that the USB-to-FTDI might be introducing noise into the receiver, I think I'll try a test setup with three motes. Two will be completely battery powered with no external connection, and one will be connected to the computer for datalogging over USB. The main change is that the receive node will receive packets, as before, from the battery powered transmitter mote, but instead of directly feeding those results over USB to the computer, it will transmit those results (including the RSSI and SNR on the packets it received) to the third mote. The third mote will be located in the same room as the receiver mote, and it is the third mote that will be connected to the computer over USB. The third mote being in the same room as the receive mote guarantees it won't lose any packets, and if any noise is introduced over USB to the third mote, it will be irrelevant, because the primary receiver mote will be stand-alone and entirely battery operated, with no possibility of USB injecting noise into it.

I suspect it won't make any difference to the final results, but the only way to know for sure is to test it. Going forward, to eliminate all doubt, I'll use the same type of three mote setup when testing other radios also. When testing different radios, all I'll need to do is swap in new radio shields and re-program the bases.

Anyhow, this thread has turned out to be more of a blog than anything, but, as always, it becomes more interesting if other people post too so that it's not just me recording a monolog. I'll start a new thread when I start testing other radios, with the goal being to compare the performance of different radio modules to see whether any one module stands out as obviously "best" in the general sense, or at least better understand under which use-cases which radio module would be better than the alternatives.

[NeverDie]

I haven't yet set up the 3 mote testing structure that I outlined above, but, for comparison, using the same two mote system for testing 915Mhz Dorji modules (each with a 3.25" wire whip antenna), with the same transmit and receive locations, the results there were rock solid SNR values with no variance over the sample:

12:16:09 May 20 2022
V1.1

104_LoRa_Receiver_Detailed_Setup Starting

LoRa Device found

SX1262,434000000hz,SF7,BW125000,CR4:5,LDRO_Off,SyncWord_0x1424,IQNormal,Preamble_8
SX1262,PacketMode_LoRa,Explicit,LNAgain_Boosted

Reg    0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
0x800  00 00 00 00 29 07 20 09 00 10 19 D4 10 C9 10 00 
0x810  10 C7 0F FE 10 C7 0F FE 00 76 8A A9 4A 00 00 00 
0x820  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x830  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x840  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x850  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x860  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x870  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x880  03 00 00 5F 10 08 00 00 08 04 00 1B 20 00 00 0C 
0x890  00 00 00 10 BD 0F 0A 07 10 00 26 01 01 53 06 07 
0x8A0  10 00 AD 20 5A 04 F0 02 56 56 54 43 96 20 40 00 
0x8B0  00 83 11 00 01 04 0A 4C 14 0A 2F 01 6B FF FF 00 
0x8C0  00 A0 20 00 00 00 AC 00 1C 00 00 AB 05 30 11 14 
0x8D0  0C 15 16 40 06 00 00 10 E8 00 00 00 00 09 31 39 
0x8E0  90 39 0C 04 40 20 16 38 06 00 05 04 03 02 01 01 
0x8F0  03 00 00 00 30 00 00 00 00 00 00 00 00 00 00 00 
0x900  30 00 00 00 00 64 00 00 00 00 00 00 24 04 47 04 
0x910  00 2F 00 00 00 03 0A 00 15 35 09 00 02 2A 67 08 
0x920  07 04 05 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x930  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x940  00 07 00 03 02 00 10 00 0A 00 03 04 00 14 0C 00 
0x950  00 00 00 06 00 00 00 00 00 00 00 00 00 00 00 00 
0x960  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x970  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x980  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x990  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 


Receiver ready - RXBUFFER_SIZE 32

4s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,1,Errors,0,IRQreg,16
5s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,2,Errors,0,IRQreg,16
6s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,3,Errors,0,IRQreg,16
7s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,4,Errors,0,IRQreg,16
8s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,5,Errors,0,IRQreg,16
9s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,6,Errors,0,IRQreg,16
10s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,7,Errors,0,IRQreg,16
12s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,8,Errors,0,IRQreg,16
13s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,9,Errors,0,IRQreg,16
14s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,10,Errors,0,IRQreg,16
15s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,11,Errors,0,IRQreg,16
16s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,12,Errors,0,IRQreg,16
17s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,13,Errors,0,IRQreg,16
18s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,14,Errors,0,IRQreg,16
19s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,15,Errors,0,IRQreg,16
20s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,16,Errors,0,IRQreg,16
21s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,17,Errors,0,IRQreg,16
23s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,18,Errors,0,IRQreg,16
24s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,19,Errors,0,IRQreg,16
25s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,20,Errors,0,IRQreg,16
26s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,21,Errors,0,IRQreg,16
27s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,22,Errors,0,IRQreg,16
28s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,23,Errors,0,IRQreg,16
29s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,24,Errors,0,IRQreg,16
30s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,25,Errors,0,IRQreg,16
31s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,26,Errors,0,IRQreg,16
32s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,27,Errors,0,IRQreg,16
34s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,28,Errors,0,IRQreg,16
35s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,29,Errors,0,IRQreg,16
36s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,30,Errors,0,IRQreg,16
37s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,31,Errors,0,IRQreg,16
38s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,32,Errors,0,IRQreg,16
39s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,33,Errors,0,IRQreg,16
40s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,34,Errors,0,IRQreg,16
41s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,35,Errors,0,IRQreg,16
42s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,36,Errors,0,IRQreg,16
43s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,37,Errors,0,IRQreg,16
45s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,38,Errors,0,IRQreg,16
46s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,39,Errors,0,IRQreg,16
47s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,40,Errors,0,IRQreg,16
48s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,12dB,Length,23,Packets,41,Errors,0,IRQreg,16
49s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,42,Errors,0,IRQreg,16
50s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,43,Errors,0,IRQreg,16
51s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,44,Errors,0,IRQreg,16
52s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,45,Errors,0,IRQreg,16
53s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,46,Errors,0,IRQreg,16
55s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,47,Errors,0,IRQreg,16
56s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,48,Errors,0,IRQreg,16
57s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,49,Errors,0,IRQreg,16
58s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,50,Errors,0,IRQreg,16
59s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,51,Errors,0,IRQreg,16
60s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,52,Errors,0,IRQreg,16
61s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,53,Errors,0,IRQreg,16
62s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,54,Errors,0,IRQreg,16
63s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,55,Errors,0,IRQreg,16
64s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,56,Errors,0,IRQreg,16
66s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,57,Errors,0,IRQreg,16
67s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,58,Errors,0,IRQreg,16
68s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,59,Errors,0,IRQreg,16
69s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,60,Errors,0,IRQreg,16
70s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,61,Errors,0,IRQreg,16
71s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,62,Errors,0,IRQreg,16
72s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,63,Errors,0,IRQreg,16
73s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,64,Errors,0,IRQreg,16
74s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,65,Errors,0,IRQreg,16
75s  Hello World 1234567890*,CRC,DAAB,RSSI,-94dBm,SNR,11dB,Length,23,Packets,66,Errors,0,IRQreg,16
77s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,67,Errors,0,IRQreg,16
78s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,68,Errors,0,IRQreg,16
79s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,69,Errors,0,IRQreg,16
80s  Hello World 1234567890*,CRC,DAAB,RSSI,-93dBm,SNR,11dB,Length,23,Packets,70,Errors,0,IRQreg,16

This was with the Dorji set to its maximum transmit power of 22dB, as compared to the E28-2G4M27S, which has the advantage of an even higher 27dB transmit power.

[Edit: oops. Reviewing the output, I see that the library defaulted to 434Mhz! So, these results were great even with the wrong length antenna installed for 434Mhz. I'll try again at the proper frequency. :blush: ]

[NeverDie]

OK, here it is corrected for 915Mhz, as it should have been the first time:

12:34:34 May 20 2022
V1.1

104_LoRa_Receiver_Detailed_Setup Starting

LoRa Device found

SX1262,915000000hz,SF7,BW125000,CR4:5,LDRO_Off,SyncWord_0x1424,IQNormal,Preamble_8
SX1262,PacketMode_LoRa,Explicit,LNAgain_Boosted

Reg    0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
0x800  00 00 00 00 29 07 20 09 00 10 19 D4 10 4E 10 13 
0x810  10 4B 10 1E 10 4B 10 1E 00 DA AA E6 DB 00 00 00 
0x820  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x830  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x840  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x850  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x860  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x870  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x880  03 00 00 5F 10 08 00 00 08 04 00 39 30 00 00 0C 
0x890  00 00 00 10 BD 0F 0A 07 10 00 26 01 01 53 06 07 
0x8A0  10 00 AD 20 5A 04 F0 02 56 56 54 43 96 20 40 00 
0x8B0  00 83 11 00 01 04 0A 4C 14 0A 2F 01 6B FF FF 00 
0x8C0  00 A0 20 00 00 00 AC 00 1C 00 00 AB 05 30 12 13 
0x8D0  0C 15 16 40 06 00 00 10 E8 00 00 00 00 00 39 39 
0x8E0  90 39 0C 04 40 20 16 38 06 00 05 04 03 02 01 01 
0x8F0  03 00 00 00 30 00 00 00 00 00 00 00 00 00 00 00 
0x900  30 00 00 00 00 64 00 00 00 00 00 00 24 04 47 04 
0x910  00 2F 00 00 00 03 0A 00 15 35 09 00 02 29 67 08 
0x920  07 04 05 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x930  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x940  00 07 00 03 02 00 10 00 0A 00 03 04 00 14 0C 00 
0x950  00 00 00 06 00 00 00 00 00 00 00 00 00 00 00 00 
0x960  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x970  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x980  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x990  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0x9F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 


Receiver ready - RXBUFFER_SIZE 32

4s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,1,Errors,0,IRQreg,16
5s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,2,Errors,0,IRQreg,16
6s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,3,Errors,0,IRQreg,16
7s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,4,Errors,0,IRQreg,16
8s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,5,Errors,0,IRQreg,16
9s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,6,Errors,0,IRQreg,16
11s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,7,Errors,0,IRQreg,16
12s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,8,Errors,0,IRQreg,16
13s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,9,Errors,0,IRQreg,16
14s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,10,Errors,0,IRQreg,16
15s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,11,Errors,0,IRQreg,16
16s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,12,Errors,0,IRQreg,16
17s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,13,Errors,0,IRQreg,16
18s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,14,Errors,0,IRQreg,16
19s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,15,Errors,0,IRQreg,16
21s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,16,Errors,0,IRQreg,16
22s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,17,Errors,0,IRQreg,16
23s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,18,Errors,0,IRQreg,16
24s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,19,Errors,0,IRQreg,16
25s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,20,Errors,0,IRQreg,16
26s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,21,Errors,0,IRQreg,16
27s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,22,Errors,0,IRQreg,16
28s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,23,Errors,0,IRQreg,16
29s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,24,Errors,0,IRQreg,16
30s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,25,Errors,0,IRQreg,16
32s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,26,Errors,0,IRQreg,16
33s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,27,Errors,0,IRQreg,16
34s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,28,Errors,0,IRQreg,16
35s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,29,Errors,0,IRQreg,16
36s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,30,Errors,0,IRQreg,16
37s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,31,Errors,0,IRQreg,16
38s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,32,Errors,0,IRQreg,16
39s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,33,Errors,0,IRQreg,16
40s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,34,Errors,0,IRQreg,16
41s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,35,Errors,0,IRQreg,16
43s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,36,Errors,0,IRQreg,16
44s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,37,Errors,0,IRQreg,16
45s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,38,Errors,0,IRQreg,16
46s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,39,Errors,0,IRQreg,16
47s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,40,Errors,0,IRQreg,16
48s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,41,Errors,0,IRQreg,16
49s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,42,Errors,0,IRQreg,16
50s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,43,Errors,0,IRQreg,16
51s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,44,Errors,0,IRQreg,16
52s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,45,Errors,0,IRQreg,16
54s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,46,Errors,0,IRQreg,16
55s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,47,Errors,0,IRQreg,16
56s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,48,Errors,0,IRQreg,16
57s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,49,Errors,0,IRQreg,16
58s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,50,Errors,0,IRQreg,16
59s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,51,Errors,0,IRQreg,16
60s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,52,Errors,0,IRQreg,16
61s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,53,Errors,0,IRQreg,16
62s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,54,Errors,0,IRQreg,16
64s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,55,Errors,0,IRQreg,16
65s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,56,Errors,0,IRQreg,16
66s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,57,Errors,0,IRQreg,16
67s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,58,Errors,0,IRQreg,16
68s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,59,Errors,0,IRQreg,16
69s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,60,Errors,0,IRQreg,16
70s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,61,Errors,0,IRQreg,16
71s  Hello World 1234567890*,CRC,DAAB,RSSI,-42dBm,SNR,12dB,Length,23,Packets,62,Errors,0,IRQreg,16
72s  Hello World 1234567890*,CRC,DAAB,RSSI,-42dBm,SNR,12dB,Length,23,Packets,63,Errors,0,IRQreg,16
73s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,64,Errors,0,IRQreg,16
75s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,65,Errors,0,IRQreg,16
76s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,66,Errors,0,IRQreg,16
77s  Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,67,Errors,0,IRQreg,16
78s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,68,Errors,0,IRQreg,16
79s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,69,Errors,0,IRQreg,16
80s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,70,Errors,0,IRQreg,16
81s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,71,Errors,0,IRQreg,16
82s  Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,72,Errors,0,IRQreg,16
83s  Hello World 1234567890*,CRC,DAAB,RSSI,-45dBm,SNR,12dB,Length,23,Packets,73,Errors,0,IRQreg,16
84s  Hello World 1234567890*,CRC,DAAB,RSSI,-46dBm,SNR,11dB,Length,23,Packets,74,Errors,0,IRQreg,16

Interestingly, even though the RSSI is vastly better, the SNR stays at around 11 to 12dB. Well, regardless, the Dorji plainly appears to perform much better in my particular home environment, at least so far, at the given frequencies and other library defaults (which do appear to be different between the SX1280 and the SX1262 (e.g. default bandwidth), so a fair comparison will need to be more equal than what's provided by only just the library defaults).

When I'm a bit more prepared, I'll compare/contrast the two different radios performance along what I would guess is the worst possible transmission path in my house. When that time comes, I'll report the results on a new thread that will be meant for comparing the performance of different radio modules. For now this was just a preliminary test to confirm that the DORJI radio module was working at all, but the results were interesting anyway.

[Larson]

@NeverDie You Rock. That looks like a great testing platform... and tiny. In my 5-minute review I have two points to add that your post(s) solicit: 1. To protect the battery gap, as it is, how about a thin piece of cardboard? It appears that the offsets in the machine pin headers have a little room to slip a small zip-tie to restrain the cardboard so that it does not interfere with the test rig on top. It is easier to hack it than redesign, resubmit, repay and all that. 2. Love to join you on this venture so you are not single handed. I'm guilty of leaching and not teaching. I can't do it now (excuses) but hope to join you and help contribute.

[Larson]

@NeverDie said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

I don't see any uCurrent Gold's for sale at the moment, but I did find a clone of it, which has what looks like a nice improvement over the original: you can plug it directly into an oscilloscope via its BNC connector.

Andreas Spiess [https://www.youtube.com/watch?v=LUB8RWzzLWc] has convinced me to buy a Power Profiler Kit II, or one that is assembled. That way I don't need to also buy a scope! I have more work to do.

[NeverDie]

@Larson said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

@NeverDie You Rock. That looks like a great testing platform... and tiny. In my 5-minute review I have two points to add that your post(s) solicit: 1. To protect the battery gap, as it is, how about a thin piece of cardboard? It appears that the offsets in the machine pin headers have a little room to slip a small zip-tie to restrain the cardboard so that it does not interfere with the test rig on top. It is easier to hack it than redesign, resubmit, repay and all that. 2. Love to join you on this venture so you are not single handed. I'm guilty of leaching and not teaching. I can't do it now (excuses) but hope to join you and help contribute.

By all means! The more the merrier!

I posted some PPK2 screenshots on another thread that I recently started: https://forum.mysensors.org/topic/11954/most-reliable-best-radio

It does a nice job of measuring milliamps. I wouldn't say the PPK2 is good at measuring <1ua currents though, such as sleep currents. If that matters to you, you'll want a Current Ranger, or TinyCurrents or similar.

[NeverDie]

Worth mentioning is that the SX1280 includes a FLRC (Fast Long Range Communications) modem that can, in theory, go as fast as 1.3mbps. When time allows it may be worth giving it a try.

[Larson]

@NeverDie said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

I wouldn't say the PPK2 is good at measuring <1ua currents though, such as sleep currents. If that matters to you, you'll want a Current Ranger, or TinyCurrents or similar.

I'd say the PPK2 is the way to go. Your other post defines the <1ua current as ... nearly infinite in human terms and battery self-discharge rates. Squeezing a stone can yield no more water. Thanks for the posts, once again.

[Larson]

@NeverDie
For me, it is one step at a time.
PPKII: Bought one! I'm back ordered at DigiKey and expect delivery in early June. I'll have to wait on the uCurrent or CurrentRanger until I get a scope. ... I know, the SSD screen on the CurentRanger and a bit of math would suffice. I may get there. Sounds it sound like you have already settled on the best-radio, so your test-rig may be for naught. If you need help, and the PPKII is sufficient, let me know. I am indebted to you for your work.

[NeverDie]

@Larson said in Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?:

@NeverDie
For me, it is one step at a time.
PPKII: Bought one! I'm back ordered at DigiKey and expect delivery in early June. I'll have to wait on the uCurrent or CurrentRanger until I get a scope. ... I know, the SSD screen on the CurentRanger and a bit of math would suffice. I may get there. Sounds it sound like you have already settled on the best-radio, so your test-rig may be for naught. If you need help, and the PPKII is sufficient, let me know. I am indebted to you for your work.

I haven't truly settled on anything just yet. It's a bit much for just one person to sort out, so maybe I'll take a pause until after you get your gear. It would be more fun working with somebody else than doing it all alone.

[Larson]

@NeverDie I'll keep you posted. I'm just emerging from hibernation and am 'shaking-it-off'. My main interest is regenerating my PIR home network that was 433 MHz based and am interested in your LoRa ideas/posts. Is your test rig publicly available at OSH Park? I haven’t looked lately. If so I’ll order some, or have some assembled at JLCPCB. When I do that, I'll send you my spares (my minimum order is 5 and I can't use that many.)