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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 moffkalast on Friday May 27, 2022 @06:43PM (#31535784)
Nope, I mean this: https://www.amazon.com/MakerFocus-Wireless-Transceiver-DC3-0...

8 pins, half of those gnd, vin, reset, and something else. 4 are usable I think.

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Re:ESPHome – Connect ESP32 with Sensors to HomeAssistant by cptskippy on Sunday May 29, 2022 @04:41PM (#31552700)
That's an ESP-01. It has 4 GPIO with some restrictions but you are able to simultaneously run an I2C bus and Serial bus giving you tremendous flexibility.

You can get those in bulk for less than a dollar each and are my most used microcontroller. They're so easy to deploy and ear easily powered of USB wall warts with a regulator.

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