RaspberryPi General-Purpose Input-Output Interfaces
RaspberryPiZeroW-GPIO Pinout Diagram
Connections
Component wiring for the Robot Buggy is straightforward; the number of components is small. Wiring amongst the battery holders, Dual H-Bridge, motors, and RaspberryPi Zero W is shown in the schematic and pictorial diagrams.
RPi Zero Pins
- GPIO 7 (pin 26) – Left motor control, Input 1
- GPIO 8 (pin 24) – Left motor control, Input 2
- GPIO 9 (pin 21) – Right motor, Input 3
- GPIO 10 (pin 19) – Right motor, Input 4
Motor control function and direction by the RaspberryPi software turns the GPIO pins on or off in accordance with the L289N motor-direction control logic defined in the table below.
L298N Motor Direction Control Logic
Input1 (or Input 3) | Input2 (or Input 4) | Spinning Direction |
| Low(0) | Low(0) | Motor OFF |
| High(1) | Low(0) | Forward |
| Low(0) | High(1) | Backward |
| High(1) | High(1) | Motor OFF |
Caution
Careful attention must be paid when wiring to preclude damage to sensitive electronic components.
