ESP-32-POE-ISO using the POE supplied power for another sensor

Started by Bigalmacmac, November 07, 2022, 02:00:11 PM

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Our project is a long way from mains electricity and wifi so the PoE ESP32 is a great fit.

I had planned on using the power from the POE for both the ESP32 and my Infrared beam sensor (it needs 12v).

I had hoped to solder onto the incoming ethernet power (under the RJ45 socket) on the board but can't identify them using a voltmeter. Looks like it should be DC+ on pin 4 or 5 and DC- on pin 7 or 8

Can you point me in the right direction please?


Not at all. What you want to do is unsafe and unrecommended.
Technical support and documentation manager at Olimex