The Great Search - I2C IO Expander (Since we can't get MCP230xx)
We've really liked using the MCP23017 https://www.digikey.com/en/products/detail/microchip-technology/MCP23017T-E-ML/964183 and MCP23008 https://www.digikey.com/en/products/detail/microchip-technology/MCP23008T-E-ML/1223120 buuuuut they're totally unavailable. Let's see if we can find some other low cost (~$1) GPIO expanders which have programmable pull-up control (once of our fav things about the MCP series!), IRQ output, and 3V or 5V functionality! See on Digi-Key at https://www.digikey.com/short/p3jzv5v4 ----------------------------------------- Visit the Adafruit shop online -…
The skinny
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