NodeMCU-32s - OTA Successful but loads old config

ESPHome
1

Hi All,

Context - I have 2 x NodeMCU-32s boards, each one is connected to a 16 way relay board.

I’m having a bit of a mare with a couple of NodeMCU-32s at the moment:

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For some unknown reason yesterday, both of my boards started going crazy and the relays on pin’s 17 started going nuts - to the point that ANY action on the board caused the relay to click - doing some research, looks like I had used Pins 16 and 17 without disabling the UART logging…MCU 1 - 0 ME.

I managed to re-write the firmware using the local USB connection - however ever since I have done that, every time I run esphome filename.yaml run - the upload takes about 1 second flat, says its successful, and then the board reboots into the existing config.

Has anyone seen this before? If it helps, these are the pins which I have relays connected to:

04,05,12,13,14,18,19,21,22,25,26,23,32,33

It was all working fine until yesterday when randomly they went nuts.

Thanks
Leacho

2

So you are using ESPHome via the command line rather than using the addon?

Try using the verbose option to see if that sheds any light on what is going wrong: https://esphome.io/guides/cli.html

3

Hi @tom_l,

I use ESPHome via the integration - but when I write new firmware I do that via command line.

I’ve checked the verbose output and I can see the changes I have made that should be written to the ESP - but still not writing to the board.

Thanks
Leacho

4

Are you putting the ESP32 into boot mode with the onboard buttons?

5

Not sure how I would do that tbh - I had to press the reset button yesterday to stop it going wild, could I have inadvertently done it then?

6
7

I’ve been doing some more investigation work with this, and interestingly, I’ve noticed that when I remove the 5V supply from the pin, and leave the GND connected, all of the relays turn on - when I remove the GND pin, all the relays turn off again - so not sure if there is a cabling fault - just going through now, wondering if one of the other pins is playing up.

Thanks
Leacho

8

Hi All, just a quick update on this, I managed to track this down to an issue with a relay being connected to GPIO12, which was being pulled low on boot, and causing the ESP to behave as it did - I’ve moved the offending relay from GPIO12 to 16 and all is working fine now.

Thanks

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