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ESP32 MH-ET LIVE MiniKit (Wemos D1 Mini Compatible)

ESP32 MH-ET LIVE MiniKit (Wemos D1 Mini Compatible)

The ESP32 Mini Development Board (MH-ET LIVE MiniKit) is a compact, feature-rich development board based on the ESP-WROOM-32 dual-core microcontroller. It offers a powerful solution for building IoT projects with both WiFi and Bluetooth capabilities. The board is designed in the popular Wemos D1 Mini format, making it fully compatible with existing Wemos D1 Mini shields, which allows you to build different hardware configurations without the need for a breadboard or soldering iron. This makes it ideal for developers looking to prototype quickly and efficiently.

With integrated features such as 4MB Flash, 520KB SRAM, and advanced low-power management, the ESP32 MiniKit is perfect for applications requiring both wireless connectivity and high performance.

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Specifications:

  • Current – Receiving: 80 mA

  • Voltage – Supply: 2.2 V ~ 3.6 V

  • Current – Transmitting: 80 mA

  • Data Rate: 54 Mbps

  • Frequency: 2.4 GHz (WiFi)

  • Mounting Type: Surface Mount

  • Operating Temperature: -40°C ~ 85°C

  • Power – Output: 16.5 dBm

  • Protocol: 802.11b/g/n/d/e/i (WiFi)

  • RF Family/Standard: WiFi

  • Sensitivity: -98 dBm

  • Serial Interfaces: I²C, I²S, SPI, UART

  • Integrated 520 KB SRAM

  • Hybrid Wi-Fi & Bluetooth

  • High Level of Integration

  • Ultra-Low-Power Management

  • 4 MB Flash Memory

  • On-Board PCB Antenna

 

Applications of ESP32 MH-ET LIVE MiniKit:

  • Home Automation: Control lights, appliances, and other home devices remotely.

  • Industrial Wireless Control: Suitable for managing industrial automation processes.

  • RC Toys: Great for remote-controlled toys and vehicles.

  • Wearable Electronics: Can be used in smart wearables for tracking, notifications, etc.

  • Low Power IoT Sensor Hub: Ideal for building energy-efficient sensor networks.

  • Mesh Networking: Allows devices to communicate with each other in a mesh network setup.

  • Video Streaming: Supports video streaming applications, including cameras and related setups.

  • OTT TV Box / Set-Top Box: Can be used as a low-cost smart TV box or streaming device.

  • Wireless Speech Recognition: Helps in creating voice-controlled devices.

  • Wireless Location-Aware Devices: Supports GPS-based and location-specific features.

 

Pin Configuration:

Pin Default Configuration Optional Modules Remarks / Prerequisites Configuration
GPIO2 PWM_DEV(0):0 / LED Blue     PWM Channels
GPIO0 PWM_DEV(0):1     PWM Channels
GPIO4 PWM_DEV(0):2     PWM Channels
GPIO15 PWM_DEV(0):3     PWM Channels
GPIO22 I2C_DEV(0):SCL     I2C Interfaces
GPIO21 I2C_DEV(0):SDA     I2C Interfaces
GPIO18 SPI_DEV(0):SCK     SPI Interfaces
GPIO19 SPI_DEV(0):MISO     SPI Interfaces
GPIO23 SPI_DEV(0):MOSI     SPI Interfaces
GPIO5 SPI_DEV(0):CS0 SD Card CS When using sdcard_spi module SPI Interfaces
GPIO1 UART_DEV(0):TxD   Console (fixed configuration) UART Interfaces
GPIO3 UART_DEV(0):RxD   Console (fixed configuration) UART Interfaces
GPIO9 UART_DEV(1):TxD     UART Interfaces
GPIO10 UART_DEV(1):RxD     UART Interfaces
GPIO34 ADC_LINE(0)     ADC Channels
GPIO35 ADC_LINE(1)     ADC Channels
GPIO36 ADC_LINE(2)     ADC Channels
GPIO39 ADC_LINE(3)     ADC Channels
GPIO25 DAC_LINE(0)     DAC Channels
GPIO13 -      
GPIO12 -      
GPIO14 -      
GPIO16 - MRF24J40 RESET When using mrf24j40 module  
GPIO17 - MRF24J40 INT When using mrf24j40 module  
GPIO26 - MRF24J40 CS When using mrf24j40 module  
GPIO27 -      
GPIO32 -      
GPIO33 -      

 

Installing the Board Definitions:

  1. Open the Arduino IDE and go to Preferences.

  2. In the Additional Board Manager URLs field, add: https://dl.espressif.com/dl/package_esp32_index.json.

  3. Go to Tools > Board > Boards Manager and search for esp32.

  4. Select version 1.0.1 and click Install.

Selecting the Board and Port:

  1. Go to Tools > Board, and select MH ET LIVE ESP32 MiniKit (you may need to scroll down to find it).

  2. Ensure that Tools > Upload Speed is set to 115200.

  3. Select the correct port under Tools > Port:

    • On Mac OS: /dev/tty.usb.modem8232 or /dev/cu.SLAB_USB_toUART.

    • On Windows: Com4 or Com3.

    • On Linux: /dev/ttyUSB0 or /dev/ttyACM0.

If the port is not showing, ensure you're using a data transfer USB cable (not a charge-only cable). If the port still isn't visible, you may need to install USB to UART Bridge VCP drivers for your operating system.

Once the drivers are installed, restart the Arduino IDE to detect the port properly.