Posted by & filed under Arduino.

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 »

Introducing my latest rathole: PiTerm1986

Posted by & filed under 8051, circuitpython, Raspberry Pi.

This is a snapshot of the current readme: Updates and current progress are on its github page: 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 »