OLIMEX ES32-POE, User Manual

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ESP32-POE-ISO GPIOs:
POWER SUPPLY:
+5V
1. may be input and output
2. when board is connected to USB or to Ethernet PoE this line can be used as output and
power suplement electronic
3. if you want to use as input i.e. to feed power from external 5V to this line make sure board is
not connected to USB!
4. when you use as output i.e. you feed external electronics from it up to 0.2A @ 5V (i.e. 1W)
can be sourced maximum. This includes the 3.3V power output. The combined power
must not exceed 1W.
+3.3V output which can source up to 0.33A @ 3.3V i.e. (1W) Make sure the combined power
sourced from +3.3V and +5V do not exceed 1W
GPIOs:
ESP_EN
resets ESP32 module
GPIO0 , GPIO1 are used only during programming, after that are free to use
GPIO2 , GPIO14 , GPIO15 are used for the SD-card, if no SD card they are free to use
GPIO2 , GPIO4 , GPIO5 , GPIO13 , GPIO14 , GPIO15 , GPIO16 , GPIO36 are shared on both UEXT
and EXT1,2 so if you use them on the one connector do not use on the other
GPI39 is connected to measure external power supply oltage
GPI34 is connected to used button and have 10K pullup
GPI35 is free to use but may be connected to measure the LiPo battery voltage if SENS_BAT_E1
solder jumper
+
ESP32-POE-WROVER has no GPIO16 connected!
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