Re:ESPHome – Connect ESP32 with Sensors to HomeAssistant
by tamu_nerd on Thursday May 26, 2022 @07:51PM
(#31524643)
Not sure, I didn't try, but using one was a good excuse to learn how. The blog post suggests that despite there being 8 they're not all suitable for use (maybe due to high on boot or something)
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Re:ESPHome – Connect ESP32 with Sensors to HomeAssistant
by cptskippy on Friday May 27, 2022 @12:12AM
(#31525954)
Ah... that makes sense. It looks like IO0 needs to be pulled high to boot.
Still looks like you could redefine RX to a GPIO and still have 8 if you didn't need serial input. I vaguely remember running into this issue with some load cell AMPs.
A Shift Register or IO Expander seem like the more interesting and less frustrating route. I'd probably end up using an ESP01 and i2c IO Expander because I'm a masochist and love trying to squeeze as much as I can out of the ESP01.