Simple board with ATmega128 microcontroller and breakout connectors for each port
- Each port is accessible over Molex 10pin header (Px0 - Px7, +5V, GND)
- L7805 voltage regulator
- Serial driver ic for 2x RS-232
- LCD connector for HD44780 displays (no BUSY reading possible, just wait..)
- Pinheader for display background LED
- Reset button
- 16 MHz crystal oscillator
- Additional +5V and GND pins
- Holes for easy mounting
Check out my other GitHub pages for more driver support (only C), I will post some libraries once I've got more time...