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A comment on ESPHome – Connect ESP32 with Sensors to HomeAssistant. Parent comment

Re:ESPHome – Connect ESP32 with Sensors to HomeAssistant by cptskippy on Thursday May 26, 2022 @09:58PM (#31525359)
The ESP01 works perfectly for most sensor projects. It can handle I2C and serial IO simultaneously.

If you really need more GPIO you can get an I2C based IO Expander to add 10 more GPIO.

[ Parent | on HN ]
Re:ESPHome – Connect ESP32 with Sensors to HomeAssistant by moffkalast on Friday May 27, 2022 @06:41PM (#31535757)
Meh, those cost extra and don't really do analog in or PWM out and have dreadful response time. Plus you have to deal with i2c which adds complexity.

I suppose in this case you could do it in that roundabout way by stacking two of those for relay control since it's as basic as it gets.

[ Parent | on HN ]