Automated Wiring Diagram for Wifi Vendo

Folayang · Jul 27, 2019

Wiring the Pi (Without Relay)

Connect the GPIO2(Pin3) going to “Coin” pin usually the white cable that came with the Coin Slot.
Connect the +12V Red cable from the coin slot to the +12V power supply
Connect the ground Black cable from the coin slot to the -12V power supply
Connect the same ground Black cable to any of the ground pins on the Raspberry Pi (Pin6, Pin9, Pin14, Pin20, Pin25, Pin30, Pin34, Pin 39)
Set the coin slot switches to “fast” and “NO”

Wiring the Pi (With Relay)

Connect the GPIO2(Pin3) going to “Coin” pin usually the white cable that came with the Coin Slot.
Connect the +12V Red cable from the coin slot to the NC port of the relay
Connect the +12V cable to the positive port of the Female DC Barrel Jack
Connect the ground Black cable from the coin slot to the negative port of the Female DC Barrel Jack
Connect the same ground Black cable to any of the ground pins on the Raspberry Pi (Pin6, Pin9, Pin14, Pin20, Pin25, Pin30, Pin34, Pin 39)
Connect the Raspberry Pi 5V(Pin2) to Relay VCC Port (This is +5V)
Connect the Raspberry Pi GPIO3(Pin5) to Relay IN port (Signal Out)
Connect the Raspberry Pi only 1 ground pin (Pin6, Pin9, Pin14, Pin20, Pin25, Pin30, Pin34, Pin 39) to Relay GND port (Ground)
Set the coin slot switches to “fast” and “NO”