So I have the base of a BC547 connected to pin 8 and I have a relay with a diode running parallel with the coil using the G5V-1 5V relay. I'm powering one side with 5V and the other side is connected to the collector of the BC547 and the emitter is connected to ground. I'm using a ultrasonic sensor …

Relay problems G5V-1 using ultrasonic Distance Sensor

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