Example firmware and board files for the OpenSegment displays
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OpenSegment Serial Display

OpenSegment Serial Display (Yellow) (COM-11645)

OpenSegment is a ATmega328 based backpack for larger 7-segment displays. The ATmega receives data over digital interfaces (such as TWI, UART, SPI and buttons) and does all the PWM and upkeep of the display.

Larger 7-segment displays pull more power than a microcontroller is able to drive directly. OpenSegment has 8 PNP and 4 NPN transistors in order to drive the segments at their maximum brightness.


  • Standard FTDI connection
  • Arduino Pro Mini @ 8MHz bootloader
  • 5V functionality

This part was created in Eagle 6.3

Repository Contents

  • /Hardware - All Eagle design files and 3D files(.brd, .sch,)
  • /Production - Test bed files and production panel files
  • Note: Firmware is not included in this repo. Please see the Serial7SegmentDisplay repo for the firmware.

Product Versions

License Information

The hardware is released under Creative Commons Share-alike 3.0.