Does anything truly add gpio?
Yes: mcp23017 Ref: https://www.microchip.com/en-us/product/mcp23017
If you want a Raspberry-friendly package there is, for example - https://www.abelectronics.co.uk/p/54/io-pi-plus
{Links supplied for information only. No implied recommendation.}
The 2x20-way header on an RPi board includes 26 user-programmable GPIO pins. Your other requirements seem to need 8. Does the LoRa HAT really need 16 pins?
Statistics: Posted by B.Goode — Tue Oct 29, 2024 2:48 pm