Strange Fault
Posted: Sun Apr 28, 2019 12:23 pmHi,
I am in the middle of making an aquarium controler with a NodeMCU ESP8266 board. I have 2x relay boards connected to it that have 4x relays on each along with a DS18B20 connected to another pin.
The problem ive found is that when my tank lights turn on or off i randomly get other relays switching and my DS18B20 probe reading 85 degrees.
The relay boards have protection diodes and opto isolators and this does not seem to happen when nothing is connected to the relays.
Any ideas?
Thanks!
I am in the middle of making an aquarium controler with a NodeMCU ESP8266 board. I have 2x relay boards connected to it that have 4x relays on each along with a DS18B20 connected to another pin.
The problem ive found is that when my tank lights turn on or off i randomly get other relays switching and my DS18B20 probe reading 85 degrees.
The relay boards have protection diodes and opto isolators and this does not seem to happen when nothing is connected to the relays.
Any ideas?
Thanks!