Troubleshooting - pixelmatix/SmartMatrix GitHub Wiki

Todo: add more troubleshooting items

My LED panel is blank or displays a single line of color

Todo: check that FM6126A panels are supported for all microcontrollers. Make sure the SmartLED Shield is hooked up correctly. Make sure the alternate clock pin for Teensy 4 is not set in software. Make sure the external power supply is connected. Make sure the setup code has the right calls in the right order.

My LED panel has incorrect colors (red and blue are swapped etc.)

Some HUB75 panels have been manufactured with color channels that do not match the standard HUB75 pinout. To use a nonstandard color configuration, you can create a custom MatrixHardware_*.h file to include in your project. See the following page for details: MatrixHardware Header

My panel is too dim

Todo: try decreasing refresh rate or refresh depth to increase overall brightness.

This is sometimes an effect of an uninitialized FM6126A/B panel

My panel is flickering

Todo: Try increasing refresh rate above 120 Hz. If SmartMatrix is not able to sustain that refresh rate it will decrease to a rate that may have noticeable flicker. Try decreasing the refresh depth to increase the max refresh rate. Try overclocking the microcontroller.