Trouble Running Relay Module With Esp32 Microcontrollers 51 Off I'm working with a 4 channel, 5 v relay module and an esp32 which operates on 3.3 v. the setup seemed to work well initially but i have started experiencing some inconsistencies. one of the four relays is working perfectly fine, but the other three are not triggering as they should. here are the symptoms:. I could not run the relay running on arduino neither on the esp8266 board nor on the esp32. i also tried an external adapter, connected the gnd common pin, tried the vin inputs, and changed the digital pin locations.

Trouble Running Relay Module With Esp32 3rd Party Boards Arduino Forum The problem is that as soon as i connect the motor, which is connected to relay 4 with the 9v power source and switch relay 4, the motor starts up for about 2 seconds and then the esp restarts and the relay closes again. I am using the esp32 together with this relay module, i am using the tasmota firmware, the configuration and operation of the esp32 is correct, but sometimes when i request the relay to be activated it does not close or open, often only the light turns on or off , would this be a problem with the relay or low power supply from the esp32?. In short you’ll get either 3,3 or 2 volts at the relay input. you will need either for example npn transistors or a different relayboard. its not about the ma but the relay checks the 5v to the inputs. anything 2v will trigger the relay and since it will never dip below that it will stay activated. My thinking was that i could use the gpio outputs from the esp32 directly to this board. the loose board has 8 3.3v relays on it with an opto isolator beside each one. there are pins for gnd, in1, in2, in3, in4, in5, in6, in7, in8 and vcc. the relays are spdt and marked 3.3v.

Trouble Running Relay Module With Esp32 3rd Party Boards Arduino Forum In short you’ll get either 3,3 or 2 volts at the relay input. you will need either for example npn transistors or a different relayboard. its not about the ma but the relay checks the 5v to the inputs. anything 2v will trigger the relay and since it will never dip below that it will stay activated. My thinking was that i could use the gpio outputs from the esp32 directly to this board. the loose board has 8 3.3v relays on it with an opto isolator beside each one. there are pins for gnd, in1, in2, in3, in4, in5, in6, in7, in8 and vcc. the relays are spdt and marked 3.3v. We have published some relay examples for both esp32 gateway and esp32 poe. for the esp32 poe the relay demo uses olimex mod io extension board that has a four relays. the mod io board is here: olimex products modules io mod io open source hardware and the esp32 poe mod io example here:. The problem is that whenever i push the button, small led turns on off on relay module but the relay itself is not clicking. when i power esp32, relay clicks and it stays in that position until i cut power.

Trouble Running Relay Module With Esp32 3rd Party Boards Arduino Forum We have published some relay examples for both esp32 gateway and esp32 poe. for the esp32 poe the relay demo uses olimex mod io extension board that has a four relays. the mod io board is here: olimex products modules io mod io open source hardware and the esp32 poe mod io example here:. The problem is that whenever i push the button, small led turns on off on relay module but the relay itself is not clicking. when i power esp32, relay clicks and it stays in that position until i cut power.