Hey guys,
I’m planning on putting together an esp32 with esphome to receive the inputs of various reed sensors I have throughout my condo on doors and windows.
I’ve been doing lots of research and could use some guidance.
- How many GPIO pins are actually usable as reed sensor inputs on your typical esp32 board?
- I’m aware of expansion boards that connect via I2C to the esp32 and this allows for a max of around 128 sensor inputs. Would this route work with Esphome without too much headache?
I appreciate any input you might have (as long as I have a GPIO to spare).
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About 30 pins could be used for various inputs depending on the board. Here is a good reference. https://randomnerdtutorials.com/esp32-pinout-reference-gpios/