I've made a chainable button scanner board, similar to the one for potentiometers. Each one connects up to 64 keys/buttons through 8 connectors. When clocked, button statuses are output on a single pin.
The button status is inverted, so a pressed button reads as 0/GND, an open as 1/V+
In addition, a breakout board is available, converting 8 columns + common row to 8 column pins + 8 row pins, making it easy to connect buttons using Dupont connectors.
The breakout boards are made with surface mount connectors to have a flush back, making it easy to glue/tape them to the back of the panel, close to the switches.
No comments:
Post a Comment