2019-12-21, 03:50 AM
it is also suggested to put a resistor in series with each switch. This is even safer than a single resistor shared to ground for all the switches and prevents shorting the pins if the wrong software is loaded and the pins are set to output.
There are 7 keys for the normal control, but I'm considering adding additional keys to an arduino which communicates to the raspberry on the spi port.
There are 7 keys for the normal control, but I'm considering adding additional keys to an arduino which communicates to the raspberry on the spi port.