Neobotics Foundation Inc.
NEORACER DOCS
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THE DOT MATRIX

The dot matrix is an 8 by 8 LED display at the back of the car.

The 8 by 8 LED dot matrix display in its housing

The dot matrix

Useful for debugging as programs write characters to it. It displays an N on boot.

ModuleMAX7219 8 × 8
Voltage5V
Input current320 mA
Size32 × 32 × 13 mm

USING THE DISPLAY

The MAX7219 is a common LED driver module. It works with many microcontrollers, so the same panel can be wired to an Arduino or an ESP32 in your own projects. On the NeoRacer the driver runs it for you, and your code writes to it through rc.display:

python
rc.display.show_text("NEORACER")   # text wider than the panel scrolls
rc.display.clear()                 # return to the idle frame