💬 Very narrow and minimal switch node
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Hi, I have finally receive your narrow board.. I try with a Si7021 sensor (the GY-21 ebay version) and I have no success. But with your other board, because I have your 2 other board version (ac/dc board and the small battery one) it's working with no problem. The difference I think is the first board without external crystal. After reading in forum, I think with Slim board version, i'm not the first with this problem. Did you test your board with si7021 sensor, or can you give my a clue ?? Thanks
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@Carl-H did you have an error message? Providing logs would also help. Which address and library did you use for this sensor please?
@alexsh1 I use the this lib: https://github.com/LowPowerLab/SI7021 My board freeze when initialize with begin function.
I can't have the error exactly because this board don't have any FTDI connection. But the same atmega328p chip with other board, it's working !! I think again is it because the board use internal oscillator.
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@alexsh1 I use the this lib: https://github.com/LowPowerLab/SI7021 My board freeze when initialize with begin function.
I can't have the error exactly because this board don't have any FTDI connection. But the same atmega328p chip with other board, it's working !! I think again is it because the board use internal oscillator.
@Carl-H if your atmega328p programmed to use the internal oscillator, I do not think this would cause a problem with Si7021.
You most likely need to assemble the same on the breadboard and connect the FTDI - I would be a simple error. Once I had a problem with Si7021 using a different address to the one in the library. Took me a while to troubleshoot.
Without logs, this is a pure guess unfortunately -
@alexsh1 I use the this lib: https://github.com/LowPowerLab/SI7021 My board freeze when initialize with begin function.
I can't have the error exactly because this board don't have any FTDI connection. But the same atmega328p chip with other board, it's working !! I think again is it because the board use internal oscillator.
@Carl-H
Did you order the latest version of the slim board ? It has solderjumpers you need to use if you want the SCL/SDA pins connected.
If there is no solderbridge on either solderpad, the D2, SDA and SCL of the atmega are not connected. This board also requires the fuses of the atmega to be set to internal oscillator as there is no external crystal. -
@Carl-H
Did you order the latest version of the slim board ? It has solderjumpers you need to use if you want the SCL/SDA pins connected.
If there is no solderbridge on either solderpad, the D2, SDA and SCL of the atmega are not connected. This board also requires the fuses of the atmega to be set to internal oscillator as there is no external crystal.@GertSanders Yes I used the version 1.1 and yes I connect the jumper pad correctly.
After some hard test, I found the problem, is it my solder or a bad batch of SMD NRF24L01 :( I explain my problem, I make a good solder of the SMD NRF24L01, I put power on the board for testing it and is it working for 2-3 loop because I open the led (d6) on each loop. After 2-3 loop the board is freezing. After I check again the solder and some pin of the SMD NRF24L01+ is shorted (check with my multi-meter). I can explain why, is it my skill of soldering or a bad batch of SMD NRF24lL01+. I test with 5 different and always the same, after power it.. it will shorted some pin. I make my order on this ebay store: http://www.ebay.ca/itm/401054727893?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
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@GertSanders Yes I used the version 1.1 and yes I connect the jumper pad correctly.
After some hard test, I found the problem, is it my solder or a bad batch of SMD NRF24L01 :( I explain my problem, I make a good solder of the SMD NRF24L01, I put power on the board for testing it and is it working for 2-3 loop because I open the led (d6) on each loop. After 2-3 loop the board is freezing. After I check again the solder and some pin of the SMD NRF24L01+ is shorted (check with my multi-meter). I can explain why, is it my skill of soldering or a bad batch of SMD NRF24lL01+. I test with 5 different and always the same, after power it.. it will shorted some pin. I make my order on this ebay store: http://www.ebay.ca/itm/401054727893?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
@Carl-H
Those modules should be OK. Soldering this radio is indeed very tricky. -
@Carl-H
Those modules should be OK. Soldering this radio is indeed very tricky.@GertSanders Thanks... after practice and practice and practice again... I have now 4 narrow board working with si7021 sensor... I need to put my solder tip very high and use alot of flux.. :)
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Hi, if external reset is not needed, why you do not short /RESET pin 1 directly to Vcc to avoid resets in noisy environments?
@tlustoch
Good point, will add that to version 1.2 (if I ever find the time :-)) -
@tlustoch
Not possible as there is no flash memory on the board. It was never the intention to update these nodes after their initial programming. -
@tlustoch
Not possible as there is no flash memory on the board. It was never the intention to update these nodes after their initial programming.@GertSanders
have you considered https://www.mysensors.org/about/ota MYSBootloader? It is announced to work without flash. -
@GertSanders
have you considered https://www.mysensors.org/about/ota MYSBootloader? It is announced to work without flash.@tlustoch
The node is a very simple one. So I never considered boot loaders, as the node would not need changing sketches during it's lifetime. I have boot loading functionality on my other designs, this one is a minimal board. Any extra chip would beat the purpose of the word "minimal".
It's a dumb node for a reason :-)
