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Summary of Contents for OLIMEX ES32-POE
- Page 1 ES32-POE ESP32-POE-ISO User Manual Document revision 2.1. September 2023 www.olimex.com...
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Page 2: Table Of Contents
2.2. ESP32-POE GPIOs:...........................9 2.3. ESP32-POE-ISO GPIOs:.........................11 2.4. ESP32-POE(-ISO) schematics......................13 2.5. ESP32-POE(-ISO) power supply.....................14 2.5.1. External power sense feature....................15 2.5.2. Battery measurement feature....................15 2.6. UEXT connector:..........................16 2.7. LED description..........................17 3. SOFTWARE:............................18 3.1. Olimex-made software........................18 4. Frequently asked questions:........................19 5. Useful links..............................21... -
Page 3: Introduction To Esp32-Poe And Esp32-Poe-Iso
Ethernet's power supply, when you program the board via the micro USB connector the Ethernet cable should be disconnected (if you have power over the Ethernet enabled)! Consider using Olimex USB-ISO to protect your computer and board from accidental short circuits. -
Page 4: Esp32-Poe Features
• High reliable industrial grade (-40+85C) variant available (-IND) • CE-RED and LVD certification • Original design by OLIMEX Ltd • Power Over Ethernet negotiation circuit, 802.3-compliant, with minimum operating voltage of 37VDC • DC-DC converter with 3A at 5V output •... -
Page 5: Esp32-Poe-Iso Features
35VDC • High reliable industrial grade -40+85C available (-IND) • CE-RED and LVD certification • Original design by OLIMEX Ltd • Low power design – 200uA consumption in deep sleep • Ethernet 100Mb interface with IEEE 802.3 PoE support •... -
Page 6: Poe Standard
1.3. PoE standard ESP32-POE and ESP32-POE-ISO are compliant with the IEEE 802.3af PoE standard and provide up to 15.4 W of DC power (minimum 37V DC and 350 mA). Only 12.95 W are assured to be available at the powered device as some power dissipates in the cable. ESP32-POE-ISO has 2W DC-DC 5V-5V insulation converter which prevents electrical influence between different sources of power but limits the power usage to 2W only! 1.4. -
Page 7: Order Codes For Esp32-Poe And Accessories
1.6. Order codes for ESP32-POE and accessories: ESP32-POE commercial grade 0-70C board with internal antenna ESP32-POE-EA commercial grade 0-70C board with external antenna ESP32-POE-IND industrial grade -40+85C board with internal antenna ESP32-POE-EA-IND industrial grade -40+85C board with external antenna ESP32-POE-WROVER commercial grade 0-70C board with 8MB PSRAM and internal antenna ESP32-POE-WROVER-EA commercial grade 0-70C board with 8MB PSRAM and external antenna... -
Page 8: Hardware
2. HARDWARE 2.1. ESP32-POE layout: User button Ethernet connector mout hole GPIOs mout hole mout hole USB connector LiPo battery GPIOs ESP32 connector reset button module Micro SD card connector... -
Page 9: Esp32-Poe Gpios
2.2. ESP32-POE GPIOs:... - Page 10 POWER SUPPLY pads: 1. Can be input and output; if you use it as input make sure no other 5V sourcesa re applied to the board (having Li-Po battery is OK); 2. When the board is attached to USB or to Ethernet PoE this line can be used ONLY as output to power attached peripherals;...
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Page 11: Esp32-Poe-Iso Gpios
2.3. ESP32-POE-ISO GPIOs:... - Page 12 POWER SUPPLY pads: 1. Can be used as either input and output. f you use it as input make sure no other 5V source is applied to the board (Li-Po battery is OK); 2. When the board is connected to USB or to Ethernet PoE this line can be used as output and power supplement electronic 3.
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Page 13: Esp32-Poe(-Iso) Schematics
2.4. ESP32-POE(-ISO) schematics This is an open hardware design made with KiCAD. All design files and exports can be found at our GitHub. ESP32-POE schematic hardware revision L is at GitHub ESP32-POE board revision changes are at GitHub ESP32-POE-ISO schematic revision L is at GitHub ESP32-POE-ISO board revision changes are at GitHub... -
Page 14: Esp32-Poe(-Iso) Power Supply
ESP32-POE from the battery. 1400mAh battery will provide about 8 hours of stand alone operation. +The LiPo battery connector is JST 2.0 mm connector and with Olimex’s battery polarity. If you use batteries from other manufacturers please make PLUS and MINUS are connected properly as you may... -
Page 15: External Power Sense Feature
By default the external power sense is enabled and it is available on GPI39! Refer to this Arduino IDE example to see how you can check for the presence external power and check the battery measurement: https://github.com/OLIMEX/ESP32-POE/blob/master/SOFTWARE/ARDUINO/ ESP32_PoE_PowerReading/ESP32_PoE_PowerReading.ino 2.5.2. Battery measurement feature This allows to measure the Li-Po battery’s voltage. -
Page 16: Uext Connector
UEXT connector stands for Universal EXTension connector and typically contains +3.3V, GND, UART, I2C, SPI signals. UEXT is 0.1” 2.54mm step boxed plastic connector. All signals are with 3.3V levels. Olimex has developed number of extension MODULES compatible with this connector. There are temperature, humidity, pressure, magnetic field, light sensors. -
Page 17: Led Description
2.7. LED description Board comes with 4 on-board status LEDs. These are not connected to the ESP32 directly and can’t be used as general purpose LEDs. LED CHRG1 shows whether the Li-Po battery attached to the board is currently charging. When it is off it means that either there is no battery attached or it is already fully charged. -
Page 18: Software
(there are ready-to-use configs for ESP32-POE and ESP32-POE-ISO): • Espressif ESP-IDF • Arduino IDE • MicroPython • ESPhome • PlatformIO 3.1. Olimex-made software We provide some examples for basic functions at our GitHub: - For Arduino you can find them here: https://github.com/OLIMEX/ESP32-POE/tree/master/SOFTWARE/ARDUINO - For ESP-IDF here: https://github.com/OLIMEX/ESP32-POE/tree/master/SOFTWARE/ESP-IDF... -
Page 19: Frequently Asked Questions
4. Frequently asked questions: • Is it safe to have USB powering and PoE powering connected and enabled at the same time? - If you are using ESP32-POE or any of its variants – no, it is not safe and should be avoided at all costs. - Page 20 • A specific resistor gets very hot! What is this component? Is it safe? Can I remove it? This is probably the resistor that is required by the IEEE standards. It is used for MPS (maintain power signature). Search online "maintain power signature poe" to get the general idea. We didn't ensure MPS in the first hardware revisions of the board (e.g.
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Page 21: Useful Links
5. Useful links The main pages of ESP32-POE and ESP32-POE-ISO are the main hubs for other locations, make sure to first check the product page at our web-site. ESP32-POE main product page: https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware ESP32-POE-ISO main product page: https://www.olimex.com/Products/IoT/ESP32/ESP32-POE-ISO/open-source-hardware...
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