so finally coming back to you. I've tried a whole bunch of different things; shielded cable, separate power supplies, 4k7 resistor, etc. The only thing that worked was to shorten the cable. It's now about 30cm and not experiencing any issues any longer!

Thanks for the help!

Thanks I'll give that a try

DHT22 is on a cable about 2 meters long.
Not using I2C.

Thanks for the tip. I should probably also have mentioned the following: I can trigger all of the relays without any issues so long as I haven't switched on the 12v external power source. Only when I switch on the 12v power supply, which sends power to the fan, via one of the relays, do I stop getti...

Hi folks I'm having an issue which has so far eluded me. I have an esp32 dev kit module connected to the following: - 2x DHT22 sensors, measuring temp and humidty in greenhouse and outside. (GPIO 2 and 4) - 4x float sensors, measure water levels in my water tanks (GPIO 5, 18, 19, 21) - 1x 4-way rela...

At the moment temp, humidty and water levels on 2 tanks. All in aid of growing healthy chillies
Having some issues with my esp32, which I think might be power related, but I'll post in the appropriate channel once I've done a few more tests.

Hi All

My name is Anton. I've been tinkering with ESP32's for a little while now.
I'm using one to monitor and control things within my greenhouse.

Keen to meet and chat to other like minded individuals.

Thanks
Anton