💬 EFEKTA Temp&Hum sensor(ver. nRF52 )+E-Ink display

[berkseo]

@heinzv said in 💬 EFEKTA Temp&Hum sensor(ver. nRF52832 )+E-Ink display:

nRF Go studio

How do I unlock (if locked) E73 with nRF Go studio ? What should be done, what actions?

1. Connect E73 to J-Link
2. Connect J-Link to the USB port of the computer
   3.??
   4.??
   ..
   

[heinzv]

@berkseo you have to connect your E73 module with a J-Link adapter, if the adapter is recognized by nRFgo Studio, the nRFx Programming will be enabled (turn from grey to black) and then you can select "Recover" (only shown if you have a locked device). You should do then also a "Erase all").
Again, it only works with a Segger compatible J-Link adapter. Do you have one? It is anyhow recommended if you want to use Segger Embedded Studio (required for using the nRF52840 and the newest 15.2 SDK).
The other/second method could work with a ST-Link or black magic probe (a 2€ clone can do it, I created a couple of them) and with openocd.

The unlock screen look like this, if you have a locked or no device connected but a valied J-Link adapter

And after recover, you get a screen like this to erase or flash a program

[berkseo]

@heinzv
Thanks for the tips, very hard to find information. I have a pair of j-link adapters. There are also several different clones of st-link v2. (but I don't have a linux machine now.) I'll try nRFgo Studio tomorrow. Earlier I wrote that I assembled my Assembly nRF52832 (dc-dc), no problems in the Arduino IDE(chips in the ribbon, see the link below). So I thought that the E73 modules do not work because of a slightly different circuit (see photo without cover) in the circuit no inductance on the DCC pin and no connection outputs through inductance to the DEC4 pin.
https://ru.aliexpress.com/item/Free-shipping-NRF52832-QFAA-NRF52832-QFAA-R-N52832-NRF52832-5pcs-lot-100-NEW-and-ORIGINAL/32828951084.html?spm=a2g0v.10010108.1000016/B.1.10a9e326lCcYJ6&isOrigTitle=true

[heinzv]

@berkseo I have updated my post above with an additiona picture.
You can do all on Windows (I mostly use Windows 10 x64). I sometimes use Linux like for creating the BMP clones. I'm using the latest Mint version in a VMware VM.
Let me know if you need more infos ...

BTW: I was further working on the own created nRF52832 PCB's with ePaper (I have many E73 modules left) and will start soldering the PCB's I have ordered from you if all parts are there (most of thema are).
The one ordered soldered module is still in transit (or I did not get it so far).

Below another picture of the ePaper output. I have tested the idea with two fonts: The larger one for the non decimals and a smaller one for the decimal. I'm using the GxEPD standard e-Paper library in my latested sketch, as it's easier to use, has more fonts und is ready for more ePaper modules/sizes.
It is just an intermediate state (batter symbol, larger font missing etc.).

[berkseo]

@heinzv said in 💬 EFEKTA Temp&Hum sensor(ver. nRF52832 )+E-Ink display:

Below another picture of the ePaper output. I have tested the idea with two fonts: The larger one for the non decimals and a smaller one for the decimal. I'm using the GxEPD standard e-Paper library in my latested sketch, as it's easier to use, has more fonts und is ready for more ePaper modules/sizes.
It is just an intermediate state (batter symbol, larger font missing etc.).

It's great, I am very glad that you are doing the further development of this direction.

[berkseo]

Making your characters is easy.

.. Absolutely any font, you are limited only by the memory capabilities of the nRf52. .. And it makes no sense to store all the characters if you need only numbers, it saves space very well.

[berkseo]

@heinzv said in 💬 EFEKTA Temp&Hum sensor(ver. nRF52832 )+E-Ink display:

The one ordered soldered module is still in transit (or I did not get it so far).

I have not sent it to you yet, I have a problem with China, I am still waiting for new modified boards, I want to send you the latest version, please wait, do not cancel the order. I will also add new PCBs to the package (there are no changes in the components and numbering, just placed differently)

The device has become thinner, less in height, all electronic components have been removed from the side of the batteries, and PCB have been prepared for mounting in the case.

[heinzv]

@berkseo Thanks, very good modifications. I'll wait patiently :-) I'll then not use the 5 + 5 PC's and eait for the new ones.
Do I understand you right, that I'll receive another 5 + 5 updated PCB's without additional money charged? That would be great (if required I can send you additional €'s or US$).
Thanks for the font-hints. I'll test it once I'm back from my BIZ-trip.

[berkseo]

@HEINZV Thanks for the clues. Now all modules are programmed in the Arduino IDE. Absolutely all modules - https://youtu.be/J0M2vgW--FM

Truth were nuances. Had to remove all the drivers for J-LINK, remove nRF GO. Then I installed the j-LINK Windows v640 drivers. Then again I installed nRF GO. And the most important point when installing nRF GO refuse to install drivers for J-LINK. nRF GO works with both my Chinese j-LINK clones :)

[heinzv]

@berkseo glad to hear, that it worked.
I'm meanwhile working on the sketch for the Tem & Hum sensor node. As written, I've switched to the GxEPD e-Paper library. It is easier to use and is installable via the Arduino Studio or via platform.io.
I've evaluated a lot of fonts and have finally found one I like and which fits to the display even with the decimals. I used the fontconvert from the GxEPD lib which can convert any TTF or OTF font.
Here is a picture (I'm still using the MySesnors PCB from ranseyer waiting for the new PCB's from you)

[berkseo]

@heinzv Finally got the PCB. Soon I will send the finished device.

[heinzv]

@berkseo good to hear. And you also mentioned to send some new PCB'
s? Let me know if I had to pay something additional.

[berkseo]

The second revision of the device is ready, the tests are passed. Added cutouts and holes on the power Board for mounting in the case. Transferred inductance of the display (680), made a cut for her on the power PCB. All this slightly reduced the size of the device, now the size of 36mm x 52mm (old size 36mm x 54mm). The down-converter moves to the other side of the power PCB.

[berkseo]

@heinzv The device and additional PCB are shipped.

[heinzv]

@berkseo looks very good, very professional work. I'll solder a few devices once I get the new PCB's and will also work further on my version of the firmware. It works already quite nice (transfering float values and showing decimals).
Attached the picture of a working pair of a sensor node (using my PCB's) and a SHT31 and a nRF52 serial gateway.

[heinzv]

@berkseo I've got your Temp/Hum sensor today and the PCB's (3+3). Since I have ordered the cr2477 batteries and your batterholder takes only the cr2450, I've tried it with the program adapter and USB power. It works. Thanks. I have ordered now additional cr2450 batteries.
I took the batteryholder form your list and they are for the cr2477!

Then I soldered my own first two PCB's, the battery PCB and the Sensor PCB. It took me quite a while (3 hours at least). It's nothing for beginners (but I not a beginner :-) )
However during my testing, I found my battery PCB working and the sensor node runs the MYSensors part and the LED blinks but the E-Paper does not work and also the SHT20 returns 998 for temp and hum.

I have not found the C12 capacitor in your parts decription list, but only a C14 (which is not printed on the PCB) with 10uF. So I assumed the C12 = 10uF. I have seached the page and there is no C12.
One the other hand, I have not found C14 on the new PCB. Maybe it's below C13 and no part print on PCB? The C13 is larger then the pads below, so it's confusing.
Maybe you can update/correct it on openhwardware, so that I can solder it correct.

So looking for the problems with e-paper and SHT20: A schematic diagram would really really help me, otherwise I'm lost. Please provide it (or at least via a PM?).
Would it be possible to get it? If you have e.g. an Eagle project (schematics and board).

It was really essential, that you provided the programm adapter for the tiny SWD connector. Thanks for that!

here are my soldered PCB's:

[berkseo]

@heinzv said in 💬 EFEKTA Temp&Hum sensor(ver. nRF52832 )+E-Ink display:

I've got your Temp/Hum sensor today and the PCB's (3+3). Since I have ordered the cr2477 batteries and your batterholder takes only the cr2450, I've tried it with the program adapter and USB power. It works. Thanks. I have ordered now additional cr2450 batteries.
I took the batteryholder form your list and they are for the cr2477!
Then I soldered my own first two PCB's, the battery PCB and the Sensor PCB. It took me quite a while (3 hours at least). It's nothing for beginners (but I not a beginner )
However during my testing, I found my battery PCB working and the sensor node runs the MYSensors part and the LED blinks but the E-Paper does not work and also the SHT20 returns 998 for temp and hum.
I have not found the C12 capacitor in your parts decription list, but only a C14 (which is not printed on the PCB) with 10uF. So I assumed the C12 = 10uF. I have seached the page and there is no C12. All capacitors are ceramic.
One the other hand, I have not found C14 on the new PCB. Maybe it's below C13 and no part print on PCB? The C13 is larger then the pads below, so it's confusing.
Maybe you can update/correct it on openhwardware, so that I can solder it correct.
So looking for the problems with e-paper and SHT20: A schematic diagram would really really help me, otherwise I'm lost. Please provide it (or at least via a PM?).
Would it be possible to get it? If you have e.g. an Eagle project (schematics and board).
It was really essential, that you provided the programm adapter for the tiny SWD connector. Thanks for that!
here are my soldered PCB's:

There are 3 types of battery holders, I make ready-made devices only on 2450, it is optimal, 2477 very high, the device in the case turns out to be disproportionate.

I solder for about half an hour:). Judging by the description of your problems, it's all about soldering. Solder the temperature sensor and the connector for the display should be a Hairdryer and solder paste. This is by the way perhaps the two most difficult procedures at home.

C13 is a capacitor from 47mf to 200mf, I added it later. C14 is a 0.1 mf capacitor. C12 is a capacitor on the display inductance input, it should be from 4.7 mf to 10mf.

Full schemes there is no, there is only parts of. I have this project done right in the program for PCB layout. But I understand that this is becoming a problem, and I will add the scheme to the project in the near future. Sorry, I know I should have done this a long time ago :((.

You wrote a post last year :), I with the holidays just gave all that up. How you're doing now. Were you able to find a problem with the display and the temperature sensor?

[heinzv]

@berkseo Happy new year! I was waiting for an answer from you, so I have not done any further investigation before I have more infos ;-)
I have now ordered another batch of 2450 battery holders (I have obviously clicket in the second link in your parts list which was the 2477).

So based on your info, my C13 is definitly wrong, I have used a 0.1uF and need to change it to a 100uf (what are you using as you write 47uF to 200uF ?). I think I need to order them first. For C12 I used a 10uF so that fits.

I think I could also have some problems with the 0.1uF parts as I have only the larger 1206 which I have to replace with 805 or 603 sized. I have ordered them already but you know that takes another 4-6weeks. So I'll wait till all parts are there and continue then with your infos and the correct ordered parts.

I have also problems with my new script as my power consumption was first 0.8mA (800uA) and now it's even 3.1mA during sleep (on my other PCB's), but was following your sleep procedure (putting all internal and external devices to powerdown). I was expecting somewhat between 2 and 20uA, so I have to analyze what is wrong.

So you solder your PCB in 0.5hour? Then I might order the PCB's bette rfrom you :-) It takes me at least 2+ hours (the first was 3hrs).
I have a super small soldering iron and I also have a hot air SMD soldering station and quality solder paste. May I try it again with solder paste.

more then later.

thanks and bye till later
Heinz

[magpern]

"L1, Inductance 4.7uh 1210 1 pcs", the text says 4.7uh but link goes to a store that sells 47uh. Which should it be?

[berkseo]

@magpern

• L1, Inductance 4.7uh 1210 - $0,71 https://ru.aliexpress.com/item/100-SMD-1210-4-7uH-5-NLV32T-4R7J-PF/32853632579.html

Also replaced on the project page. Inductance on 4.7 was, apparently they ran out.