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by: Jun 24,2022 1619 Views 0 Comments Posted in Engineering Technical

Environmental Sensing KiCad Microcontroller Boards Crowdfunding Project

Summary:       A fully open source ESP32-based PoE+ board with a mikroBUS™ socket and two handy add-on shields

Espoir is a fully compliant Ethernet+ (PoE+ 802.3 af/at) ESP32-based devboard that can let you get right to business. At 5V and 3.3V, it provides up to 15 Watts of power. Four full cooper layer provide the board with enhanced electromagnetic compatibility and thermal dissipation and its PI-filtered power inputs and outputs gives analog performance. In addition, it uses modern USB-C connector.

Espoir owns high connectivity with 16 IOs, Wi-Fi, Bluetooth, USB-C and 100 Base-T Ethernet. Its form factor and

mikroBUS™ header can easily accommodate over a thousand existing add-on boards.

From Smart Gardening to Complete Home Automation

Espoir originated from a market-gardening automation project. Hence, it is designed with outdoor use in mind, handling servomotors, relays, valves and all kinds of sensors. Use it to make ordinary devices smart and complete the home automation. Turn it into a Wi-Fi access point to expand your network, it can be used for smart lighting, access control and motion detection, assembly line tracking, item scanning and even audio applications.

Features & Specifications

ESP32-MINI-1 Processor

  • Single OR dual core 240 MHz
  • 4 MB Flash @ 80 MHz
  • 520 KB SRAM


  • Input: 37 V - 57 V PoE through the Ethernet connector. 2,250 V isolation
  • Input: 5 V through the USB-C connector (4.6 V available through a protection diode)
  • Output: 5 V at 3 A (15 W) from PoE
  • Output: 3.3 V at 0.7 A (2.3 W) (Linear, derived from the 5 V power rail)


  • 100Base-T Ethernet (80+ mbps UDP throughput)
  • Wi-Fi 2.4 GHz 802.11b/g/n with integrated antenna
  • Bluetooth 4.2 BLE
  • USB 2.0 via USB-C connector
  • Full mikroBUS™ socket with two grounds, 5 V, 3.3 V and 12 IOs
  • Extension header with two grounds, four additional input only pins, and the ESP32 reset signal (unsoldered socket header included)

Form factor

  • Weight: 31 g
  • Size: 50.8 x 61.0 mm (2.0 x 2.4 in)
  • Mounting holes: 4x M2.5 / 4-40. The bottom-left hole is plated and connected to local ground.

Two Add-On Boards to Get Started in a Flash

Except for the 1,300+ available mikroBUS™ add-on boards, there are also two affordable mikroShields to help you started:

This project is going to be crowdfunded on CrowdSupply, click here to get more details and support it if you are interested:)

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