{"product_id":"olimex-esp32-poe2-iot-board","title":"Olimex ESP32-POE2 IoT Board","description":"\u003cp\u003eThe \u003ca href=\"\/zh\/collections\/olimex\"\u003eOlimex\u003c\/a\u003e ESP32-PoE2 is an ESP32-powered WIFI\/BLE\/Ethernet development board with Power-Over-Ethernet feature.\u003c\/p\u003e\n\u003cp\u003eThe PoE is handled by a TPS2378PW chip that is IEEE 802.3-compliant, including pre-standard (legacy) PoE support. The PoE powering requires at least 37V DC to operate successfully. The board takes power from the Ethernet cable and can be expanded with sensors and more. Perfect solution for Internet-of-Things projects!\u003c\/p\u003e\n\u003cp\u003eThe ESP32-POE2 can power external circuits with 24V\/0.75A or 12V\/1.5A plus 5V\/1.5A plus 3.3V\/1A up to a total of 25W of power output. This is when the board is powered from the Power-Over-Ethernet connector.\u003c\/p\u003e\n\u003cp\u003eThis board operates in the commercial temperature range (0-70) degrees C.\u003c\/p\u003e\n\u003ch2\u003eImportant notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32-POE2 has no galvanic isolation from Ethernet's power supply\u003c\/strong\u003e, this might be a problem for ground loops\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis also means that when you program the board via the micro USB connector the Ethernet cable should be disconnected\u003c\/strong\u003e (if you have power over the Ethernet enabled)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAny board with its own external power supply attached to ESP32-POE2 can be dangerous\u003c\/strong\u003e. Consider using an Olimex 'USB-ISO' to protect your computer and board from accidental short circuits \u003cstrong\u003e(do not use external power for the USB-ISO!)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eESP32-WROVER-E-N4R8 - WiFi and Bluetooth module with 4MB flash, 8MB PSRAM\u003c\/li\u003e\n\u003cli\u003eCE-RED and LVD certification\u003c\/li\u003e\n\u003cli\u003eLow power design - 200uA consumption in deep sleep\u003c\/li\u003e\n\u003cli\u003eEthernet 100Mb interface with IEEE 802.3 PoE support\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/zh\/products\/usb-a-to-usb-c-cable-1m\"\u003eUSB-C\u003c\/a\u003e connector for ESP32 programming\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/zh\/products\/sandisk-microsd-card-class-10-a1\"\u003eMicroSD card\u003c\/a\u003e working in 1 bit mode (3 more GPIOs)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/zh\/products\/1200mah-3-7v-lipo-battery\"\u003eLiPo battery\u003c\/a\u003e charger with LiPo battery connector\u003c\/li\u003e\n\u003cli\u003eBattery level monitor pin on ADC\u003c\/li\u003e\n\u003cli\u003eExternal power supply detection pin on ADC\u003c\/li\u003e\n\u003cli\u003eTotal output for external circuits - 25W max, max power distributed as follows:\n\u003cul\u003e\n\u003cli\u003e0.75A at 24V or 1.5A at 12V (selectable by jumper)\u003c\/li\u003e\n\u003cli\u003e1.5A at 5V\u003c\/li\u003e\n\u003cli\u003e1A at 3.3V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUEXT connector\u003c\/li\u003e\n\u003cli\u003eEXT connector\u003c\/li\u003e\n\u003cli\u003eUser button\u003c\/li\u003e\n\u003cli\u003eReset button\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 59 x 90mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDocuments\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/github.com\/OLIMEX\/ESP32-POE2\/blob\/main\/DOCUMENTS\/ESP32-POE2-user-manual.pdf\" target=\"_blank\"\u003eESP32-PoE2 user manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.olimex.com\/Products\/IoT\/ESP32\/ESP32-POE2\/resources\/EU-DOC-ESP32-POE2.pdf\" class=\"\" target=\"_blank\"\u003eESP32-PoE2 EU declaration of conformity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.olimex.com\/Products\/IoT\/ESP32\/ESP32-POE2\/resources\/UKCA-DOC-ESP32-POE2.pdf\" class=\"\" target=\"_blank\"\u003eESP32-PoE2 UKCA declaration of conformity\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDemoSoftware\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"\"\u003e\u003ca href=\"https:\/\/github.com\/OLIMEX\/ESP32-POE2\/blob\/main\/SOFTWARE\/ARDUINO\/LAN8720-POE2\/LAN8720-POE2.ino\"\u003eSimple Ethernet demo for ESP-IDF\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003ca href=\"https:\/\/github.com\/espressif\/arduino-esp32\"\u003eWorks with default Arduino for ESP32\u003c\/a\u003e if you have trouble refer to \u003ca href=\"https:\/\/www.olimex.com\/Products\/IoT\/ESP32\/_resources\/Arudino-ESP32.txt\"\u003ethis document\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"\"\u003e\u003ca href=\"https:\/\/github.com\/OLIMEX\/ESP32-POE\/tree\/master\/SOFTWARE\/ARDUINO\"\u003eMore Arduino examples on our GitHub pages\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUSB Drivers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.olimex.com\/Products\/Breadboarding\/BB-CH340T\/resources\/CH341SER.zip\" class=\"\" target=\"_blank\"\u003eUSB driver for Windows\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/OLIMEX\/ch340-dkms\"\u003eHigh-speed USB driver for Linux\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.olimex.com\/Products\/Breadboarding\/BB-CH340T\/resources\/CH341SER_LINUX.ZIP\"\u003eUSB driver for Linux (for old kernels; pre-3.14.x)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.olimex.com\/Products\/Breadboarding\/BB-CH340T\/resources\/CH341SER_MAC.ZIP\" class=\"\"\u003eUSB driver for Mac\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.olimex.com\/Products\/Breadboarding\/BB-CH340T\/resources\/CH341SER_ANDROID.ZIP\" class=\"\"\u003eUSB driver for Android\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHardware\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/github.com\/OLIMEX\/ESP32-POE2\/blob\/main\/HARDWARE\/ESP32-PoE2_Rev_B\/ESP32-PoE2_Rev_B.pdf\" target=\"_blank\"\u003eESP32-POE2 schematic in PDF format\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/github.com\/OLIMEX\/ESP32-POE2\" target=\"_blank\"\u003eESP32-POE2 source KiCad files\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eR28 gets very hot! What is this component? Is it safe? Can I remove it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis resistor is required by the IEEE standards. It is used for MPS (maintain power signature). Search online \"maintain power signature poe\" to get a general idea.\u003c\/li\u003e\n\u003cli\u003eLack of R28 causes availability problems when using ESP32 power saving modes - the board would consume less wattage than PoE equipment can detect, which leads to PoE equipment shutting the ESP32 board off.\u003c\/li\u003e\n\u003cli\u003eIf you are not using low-power modes and the heat from the resistor bothers you, you might try desoldering it and see if that affects your setup negatively. Notice that we don't recommend doing so.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEthernet doesn't work. Is my board defective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMake sure you've selected the board variant with PSRAM enabled (this board has WROVER module, not WROOM). Make sure your code defines GPIO0 as Ethernet clock source pin.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x ESP32-POE2 Board\u003c\/li\u003e\n\u003cli\u003e4x Soft PCB Feet\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Olimex","offers":[{"title":"Default Title","offer_id":50847268929809,"sku":"106010","price":22.9,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/olimex-esp32-poe2-iot-board-olimex-106010-42924107464899.jpg?v=1735209596","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/olimex-esp32-poe2-iot-board","provider":"Tayyab Zak","version":"1.0","type":"link"}