Other than the switch and lamp matrix design I have planned before, I am now thinking of attaching the I/O functions through shift registers, being controlled from the I/O microcontroller board PinBall/Parts/PB-B03. Output functions would use SiPo (serial in, parallel out) registers, input functions PiSo (parallel in, serial out) modules.
Inputs
The input circuit consists of 74HC165 8-bit parallel-in/serial-out shift registers. These can be cascaded to service up to 255 digital input channels.
Outputs
The output section is made from 74HC595 8-bit serial-in/parallel-out shift register with output latches. Here, cascading will also be possible as needed.
CategoryElectronics CategoryPinball
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