I want to connect and control a 12V door lock solenoid and am a bit unsure about the circuit. So far I've bought following components in:
- Raspberry Pi 3 Model B
- 4x18650 Battery Holder
- 4x18650 (3.7V) Batteries as External Power Supply
- 1 channel 5V relay module
- 12V door lock solenoid
Is this sufficient? Or am I missing something? Im quite new and still learning in this field.
Please help out