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Description
ESP32 Mini Development Board Wifi Bluetooth IoT Development Board is ESP-WROOM-32 dual-core CPU based WiFi-BT-BLE MCU module the MH-ET LIVE MiniKit for ESP32 uses the ESP32-WROOM-32 module. It is a very interesting development kit as it uses in the stackable Wemos D1 Mini format. Thus, all shields for Wemos D1 mini for ESP8266 can also be used with ESP32. This makes it possible to create different hardware configurations without the need for a soldering iron or a breadboard like Micro SD-Card Shield, RTC shield, Button Shield, RGB LED Shield ex, MH-ET LIVE MiniKit for ESP32 belongs to the class of general purpose boards where most ESP32 pins are broken out for easier connecting.
Application of ESP32 MH-ET LIVE Minikit (Wemos D1 Mini Compatible):
Home automation.
Industrial wireless control.
RC toys.
Wearable electronic products.
Low power IoT sensor hub.
Mesh networking.
Video streaming of the camera.
OTT TV box / set-top box device.
Wireless speech recognition device.
Wireless location-aware devices.
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.
Mounting Type: Surface Mount.
Operating Temperature: -40°C ~ 85°C.
Power – Output: 16.5dBm.
Protocol: 802.11b/g/n/d/e/i.
RF Family/Standard: WiFi.
Sensitivity: -98dBm.
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.
On-board PCB antenna.
board Pins 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 module sdcard_spi is used | SPI Interfaces |
| GPIO1 | UART_DEV(0):TxD | Console (configuration is fixed) | UART interfaces | |
| GPIO3 | UART_DEV(0):RxD | Console (configuration is fixed) | 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 module mrf24j40 is used
|
|
| GPIO17 | - | MRF24J40 INT |
when module mrf24j40 is used
|
|
| GPIO26 | - | MRF24J40 CS |
when module mrf24j40 is used
|
|
| GPIO27 | - | |||
| GPIO32 | - | |||
| GPIO33 | - |
Installing the board definitions:
- Start the Arduino application and open
Preferences - Enter
https://dl.espressif.com/dl/package_esp32_index.jsoninto theAdditional Board Manager URLsfield. If you need more than one, they can be separated with commas - Go to
Tools > Board > Boards Manager - Search for
esp32. - When found, select version
1.0.1and click
Install Selecting the board and port
- Select your board type by going to
Tools > Board, then selectingMH ET LIVE ESP32MiniKit(you may have to scroll down the list to find it) - Check that
Tools > Upload Speedis set to115200 - Next, you'll need to select the port under
Tools > Port. Your port name should be something similar to the below: - 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 your port is not showing up or Port is greyed out, the first thing you should check is that the micro USB cable you're using is NOT a charge-only cable and that it isn't faulty. If your cable is working and supports data, but the port is still not showing, you probably need to install USB to UART Bridge VCP drivers on your computer. Click here, then download and install the drivers for your operating system. After installing the drivers, restart the Arduino IDE.