💬 Arduino Pro Mini Shield for RFM69(H)W

andre_x

Hi guys!
Thanks to NeverDie, I've just received my first batch!
Can anyone post the code for the board with the sensor?
Thanks!!!

andre_x

THAAAAAANKS!!!

gohan

@andre_x it is pretty straightforward, there are already examples rfm69 examples around the forum: it's basically the node example sketch with added sensor library and a few lines of code to read and send temperature/humidity

jeti

Hi Guys,

I am having troubles with the Version 015 ( i have checked that DI00 is routed to PIN2).

My definition for the radio looks like this:

// Enable and select radio type attached 
#define MY_RADIO_RFM69
#define MY_IS_RFM69HW
#define MY_RFM69_FREQUENCY RF69_433MHZ

but i still get a error:
!TSM:FPAR:FAIL

Adding a capacitor did nit help either. Does someone have a similar Issue?

Thanks

pepson

Hi
Is any chance to also project it for Arduino Pro Mini but for version 5V ?

gohan

@pepson I guess not since it would need a logic level converter if you don't want to fry the rfm69 module

pepson

But it is not only other voltage power ? I use it on my Arduino Pro Mini 5V and use reduce power from 5V to 3,3V by stabilizer... But i use version 5V because i use it with sketch to control relay...

gohan

read rfm69 datasheed, the pins can only take up to 3.6V, they are not 5V tolerant like the NF24

pepson

Yes
But i reduce power from 5V to 3,3V by AMS1117

gohan

I'm not talking about vcc, I'm talking about data pins

scalz

@pepson
if your arduino VCC is 5v, then arduino SPI lines are running at 5v and sending 5v to RFM69 SPI pins which is not ok. like gohan said, you need level shifter, or use a 3v arduino pro mini

pepson

i use it on arduino pro mini 5v and works ok. no problem. Also use RFM69HW on RPi3 and also works ok.
When i use on Arduino Pro Mini 5V i can not use RFM69HW with AMS1117 ? Radio will be destroy after some times ?

pepson

Also on mysensors show how connect it to Arduino 5V
https://www.mysensors.org/build/connect_radio

zboblamont

@pepson "NOTE: The NSS, MOSI and SCK are not 5V tolerant on RFM69. You will need to use a level converter if you're using a 5V Arduino."....

pepson

Ok but why nothing is describe on MySensors on page where show how connect radio ?
But i have connected and works ok 5V without logic level converter...

If i not use this logic level converter what will be happen ?
I can use this https://pl.aliexpress.com/item/8CH-IIC-I2C-Logic-Level-Converter-Bi-Directional-Module-DC-DC-5V-to-3-3V-Setp/32238089139.html?spm=a2g17.search0104.3.299.voV8Dr&ws_ab_test=searchweb0_0,searchweb201602_4_10152_5000015_10151_10065_10344_10068_10342_10343_51102_10340_10341_5130015_10084_10083_10304_10307_10301_10312_10059_10313_10314_10534_5790011_100031_10604_10103_10594_5060015_10142,searchweb201603_32,ppcSwitch_4&algo_expid=1efe59eb-1872-47dd-8d87-8a30137c624f-24&algo_pvid=1efe59eb-1872-47dd-8d87-8a30137c624f&rmStoreLevelAB=5 ?

scalz

@pepson
You're messing things, you should recheck.
zboblamont extracted the note exactly from here https://www.mysensors.org/build/connect_radio
If you check the rfm69 section, then you'll see it's not 5v tolerant. You can also check min and max input voltage in rfm69 datasheet if you need.
In the above link, it is not mentioned that it is using a 5v arduino (i agree the regulator on the pic can be misleading, but there is the note..).As there is no level shifter on the pic, you should consider it as 3v arduino with use of additional regulator in case the arduino is not beefy enough for the radio module.. :)

On your rpi, do you connect the rfm69 vcc to 5v rpi? I don't think so, or you'll fry your radio.. And the Rpi GPIO are 3v, not 5v. So no problem for the radio spi.

3v arduino mini pro has a regulator to convert 5v input to 3v for atmel. So on these boards, the atmel vcc is 3v, and signals too. To not mess with 5v arduinos, which are running full 5v.

I guess these level shifter should work, I have no xp with these. And generally prefer to go simpler, without levelshifting.

pepson

ok but for arduino pro mini 3v i can not connect relay 5v. I use it to control relay...
Can i use it : https://pl.aliexpress.com/item/8CH-IIC-I2C-Logic-Level-Converter-Bi-Directional-Module-DC-DC-5V-to-3-3V-Setp/32238089139.html?spm=a2g17.search0104.3.299.voV8Dr&ws_ab_test=searchweb0_0,searchweb201602_4_10152_5000015_10151_10065_10344_10068_10342_10343_51102_10340_10341_5130015_10084_10083_10304_10307_10301_10312_10059_10313_10314_10534_5790011_100031_10604_10103_10594_5060015_10142,searchweb201603_32,ppcSwitch_4&algo_expid=1efe59eb-1872-47dd-8d87-8a30137c624f-24&algo_pvid=1efe59eb-1872-47dd-8d87-8a30137c624f&rmStoreLevelAB=5

zboblamont

@pepson I suggest you read it again.... The table refers to VCC 3.3v, thereby what is shown NOT a 5v device, the NOTE on that page and which I quoted above spells it out clearly, a converter would be required for 5v.
If you are supplying it with 5v as well as connecting 5v logic, it is working outside it's specifications, that it is working at all is luck, but magic smoke will appear at some point.

pepson

To VCC i put 3.3V (by AMS1117)
All other pins from Arduino i use directly.

scalz

@pepson
let's recap, I'm not sure you got it..
Says you have a VIN of 5 or 9V, and you connect it to your arduino. On the arduino board you have a ldo. So:

5V Arduino variants will convert the VIN to a 5V VCC supply to you microcontroller (let's call it atmel, or 328p it's shorter). At this moment the atmel is running fully on 5v. If you set an IO to HIGH or =1, it will output 5V! And it's the same for SPI that you connect to your radio module. You thought you could apply a lower voltage to the radio module by applying an external 3V ?? Can't work, because SPI has datain and dataout. Dataout from atmel to radio will be 5v!!
3V arduino variants will convert your VIN (5, 9V etc..) to 3v. The atmel will run on 3v, its pins and peripherals too, so no problem for the dataout above.

I can't explain better, or maybe you should use a 3v arduino, and add a fet to drive your relay from 5v.
I would prefer this way (level shifting a basic io, than level shifting the spi bus)

💬 Arduino Pro Mini Shield for RFM69(H)W

9

11.7k

11.2k

113.0k