Learn Robotics Programming

Troubleshooting

If you encounter problems trying to light the LEDs, please try these tips:

• For Pi booting issues, turn it off immediately then do the following:
  • Check your wiring. Ensure the level converters are the correct way around. There should be no heat.
  • The previous diagram shows the power from the LEDs coming from the 5V line on the Pi. The power supply may not be able to power the LEDs and the Pi. In this case, take a female-female jump cable, and wire the 5V for the light strip only to the V line on row 15 of the PWM/Servo connectors on the motor controller.
• If errors are shown, do the following:
  • Check you have enabled SPI (as shown in Chapter 7, Drive and Turn - Moving Motors with Python). On the Pi, the file /dev/spidev0.0 ...