In our last post we talked about wanting explore the use of two I2C based io expanders in an old school application. If it werent for the fact that there was a readymade lcd library for the mcp23017 I would have swapped the io expanders. No Pull-ups, No Pulldowns and no decent documentation on the… Read more »
Monthly Archives:: June 2021
Introducing my latest rathole: PiTerm1986
This is a snapshot of the current readme: Updates and current progress are on its github page: https://github.com/feurig/PiTerm1986 GOAL: Convert 80s style user interface ( 8031 based ADP Product: chicklet keyboard and 2×20 lcd ) to pi zero based terminal using i2c based io expanders. Looking under the keyboard membrane and tracing the connectors we… Read more »