Laen-
Header block pinout
07/19/2016 at 20:56 • 0 commentsTranscribing my notes from last time I hacked on one of these, here's the pinout for the daughterboard.
- Keypad, Row 1
- Keypad, Row 2
- Keypad, Row 3
- Keypad, Row 4
- Keypad, Column 4
- Keypad, Column 3
- Keypad, Column 2
- Keypad, Column 1
- ?
- ?
- ?
- Card Reader
- VFD Controller, Reset driver chip
- VFD Controller, Shift-in
- VFD Controller, Shift Clock
- +5V IN
- Piezo speaker
- ?
- ?
- GND
Verifone Tranz 330 Boondoggle
Documenting and messing with the Verifone Tranz 330 series credit card terminal