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SPI LED display bar

> v0.1 <

This is an 8 digit 7 segment display, interfaced over SPI bus.

Features:
	8 Digits
	16 step dimming
	Arbitrary characters
	3.3V or 5V logic compatible (requires 5V power).

This is a MAX7219 based display, handy for adding 8 digits of display to anything with a SPI interface.

Schematics

files

PCB layout

kicad source

Example Code

• AVR library
• Linux example (uses spidev)
• STM32 library

Gallery

• 

  two row variant

• 

  two row variant, back side

• 

  inline variant, multiple on one board. (NTP world clock prototype)