I am following these instructions to get a simple 7-segment display working:


My problem is that as soon as one of the 3 SPI Pins are connected the digits go off. When running the provided sample script i see no errors, but again, all digits are off. I already double and triple checked the pin-connections and they are as described in the documentation. SPI is also enabled. (Checked with ls -l /dev/spi* ) As long as just 5V and GND is connected, all digits show '8'.

The display works fine when used with an arduino.

This question has an open bounty worth +50 reputation from clamp ending in 3 days.

This question has not received enough attention.

  • According to the datasheet for the MAX7219, all the segments should be off if just power is applied. – John La Rooy Feb 10 at 22:49

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.