Hello Arduino Forums,
Intermittent DIYer here. I am trying to get 2 HW 307 relays to flash lights independently of one another using a 12v DC source. Basic wiring:
12v Battery -> 5v Buck Convertor (MPM3610) -> Arduino
Following along with: https://arduinogetstarted.com/tutorials/arduino-relay
I have wired 5V, GND, VCC, COM, NO.
The issue: The red light stays on and the green light turns off and on according to the pin's LOW or HIGH signal. However, this does not trigger the relay (no clicking and current stays on). The relay itself is fine, as I tested it manually with 12v.
Am I not supplying enough current to the VCC from the 5v Arduino pin? If so, what is a good work around / different relay module for this?