ROBOCON MINI.

The ROBOCON MINI is a versatile microcontroller board designed for educational purposes and small-scale robotics projects. This board is powered by the ATMEGA 328, an 8-bit microcontroller widely recognised for its application in Arduino platforms.

The board features four PWM outputs that can be used to control servos or function as general-purpose GPIO (General Purpose Input/Output) pins. It supports a 12V DC stepper motor, providing robust control for various robotic applications.

Several 3-pin JST connectors are available for GPIOs, offering Ground (GND), 5V, and Signal connections. It includes an onboard potentiometer connected to A6, which can be used to generate variable signals, such as for servo control or adjusting brightness. Additionally, A7 is internally connected to function as a battery voltage reader.

An onboard LED connected to Pin 11 serves general-purpose uses and is programmable for various indications. The board also supports two SR04-US ultrasonic sensors, which utilize A0 & A1 and A4 & A5 pins in a sharing mode. It is important to note that these pins should not be used with other 3-pin JSTs while the ultrasonic sensors are in operation.

For wireless communication, the board can accommodate both HM10 or HC-05 Bluetooth modules, with the Tx connected to pin 2 and Rx to pin 4.

The ROBOCON MINI supports bootloader uploads through pins 11, 12, 13, and RST. Power options include a DC Jack accepting 7 to 12V DC with a current range of 1 to 2 A, and an external battery connection via a 3-pin JST male connector, suitable for a Li-ion 2-cell battery (7.4V). When using a 7.4V battery, an 8.4V to 9V DC adapter is recommended for charging.