How to setup a 5V Relay with the Raspberry Pi

Step 1: Parts You will need: RPI 3  4 Amp Power Adapter 16GB micro SD  120 pcs jumper cable 5 Volt Relays 12 Volt Power Supply 5.5x2.1mm Male+Female DC Power Socket Step 2: Setup VCC -> 5 volt pin GND -> Ground pin IN -> GPIO 21 *Ensure postive leads are hooked up to NO and C terminals Step 3: Code 1. Copy Script to Raspberry Pi 2. Type "python relay.py" to run https://content.instructables.com/ORIG/FRU/KW61/J9YJGOWQ/FRUKW61J9YJGOWQ.py Step 4: Additional Info Online Guide: https://www.piddlerintheroot.com/5v-relay/   If you need 5V relay: 👉 5V Relay If you need other relays:  👉 Other Relays More Electronic Component，welcome to HALJIA!...