5 ms·
You might look into an io expander chip to hook to your pic via I2C or some other protocol. Many of them also have a few PWM outputs. 4, 8, or 16 additional GPI
by digikata 13y ago
You might look into an io expander chip to hook to your pic via I2C or some other protocol. Many of them also have a few PWM outputs. 4, 8, or 16 additional GPIO's are pretty common, and higher pin count expanders are out there, but they get a bit more specialized as the counts go up.