What is it?

Universal motherboard designed for sensor based, monitoring and home automation projects based on ESP32- WROOM microcontroller. The uniqueness of CG_mini lies in the distribution of all ports and interfaces to JST 2.54 connectors, which allows you to create complete solutions without using a development board, soldering and developing your own PCB.

What makes it special?

Any interfaces In total, the board has three I2C interfaces, 2 UARTs, 1 analog port, 1 OneWire interface, 1 SPI interface and one logic port, to which a load of up to 0.5A can be connected (1 relay / beeper). Moreover, each connector has the necessary power.

JST 2.54 connector

JST 2.54 connector provide simple and reliable connection of external sensors and executable devices.

Led diods

For the implementation of universal circuits of visual signalization and monitoring, board has 2 RGB led diodes.

External watchdog timer

To ensure a high degree of reliability, there is a hardware watchdog timer that implements a hardware reset of the microcontroller every 60 seconds (or more often), which allows the device to return to work in the event of freezing.

5 and 9-28V supply

The board has a DC-DC power converter which allows powering the board with a voltage of 9 - 28V. For this, the DC barrel connector and terminal connector are wired on the board. It also provides the ability to power from USB Type-C (5V).

Features

Microcontroller: ESP32- WROOM

Wireless interfaces: WiFi/Bluetooth

Interfaces

• 3 I2C interfaces;
• 2 interfaces UART;
• 1 analog interface;
• 1 OneWire interface,
• 1 SPI interface
• logic output for relay/beeper or other (up to 0.5 A)

External watchdog timer: yes

Supply voltage:

• type-C - 5V
• terminal/DC – 9..28V

Max working current: 2А

Board dimensions: 76mm х 46mm х 13,5mm

Working temperature range: -40°C ... +70°C.

Connectors

Dimentions

Dimentions

Detailed pinout of connectors is given in the datasheet.