Elias Perez asked 4 years ago
Hello everyone! Im trying to use a relay with my ESP32 such as in the example given by Rui. However, even when my pin output is LOW, the relay is still active. Now, I’ve seen that the example uses a SRD-05VDC-SL-A, and I’ve a JQC3F-05VDC-C. Supposedly the relay I have has a lower limit of 3V for controlling the relay, but still the relay is always working. Any advice?
1 Answers
Steve Mercer answered 4 years ago
It may be that the lower output of the pin is not enough for the relay to trigger. What with the back EMF on relay coils you should really consider using a transistor and diode.