DOA 7seg

DOA_7seg (Rev.1)

Jumper selectable to either

• common cathode
• common anode

Along with the Jumper selection via JP1, the suitable driver chip has to be used for IC4 and IC5.

Features

• select common cathode or anode via JP1 and IC4/IC5
• 32 displays per board or 256 LEDs or any combination
• small boardsize: 80x100mm or 1/2 Euro size.
• dimming possible
• no ghosting
• hi current displays supported (25mA max. per segment)
• all segments individually controllable
  • ie. the dot
  • allows you to create certain characters, like a capital 'A' or 'C', a lower case 'd',...
  • individual segments fully controllable by host software
• of course, instead of 7segment displays you can also use LEDs (8 LEDs instead of one display, 16 instead of two,...)
• controlled via the PHCC DOA bus with the AP2P Protocol.
  • multiple display controllers can be connected to the DOA bus...
  • along with other DOA bus devices (up to 256 devices currently)

Example Setup

Example Setup

Schematic and Board Layout

Rev.1 Schematic

Rev.1 Layout

Bill of Materials

see download page.

Eagle and Gerber files

see download page.