RB3204-RBCX

RBCX is a universal controller for hobby robots. It is a successor of RB3201-RBControl. It is used in our robot Robotka on Robo camp 2020.

Features

• ● 4 DC motors with encoders
• ● 4 servos with feedback (via ADC)
• ● 4 LEDs
• ● buttons with the gamepad interface
• ● Smart Servo connector
• ● piezo buzzer
• ● RTC
• ● ultra-sonic distance sensor connector
• ● I2C connectors
• ● OLED display connector
• ● accelerometer and gyroscope
• ● micro USB and USB-C connectors
• ● battery connector (without charging circuit)

Hardware

Board is based on STM32F103VC microcontroller and ESP32-DevKitC.

STM32 is used for motor control and other low-level tasks. ESP32 is used for high-level tasks like communication with mobile app and sending commands to STM32 via UART.

STM32F103VC

• ● 72 MHz, 32bit ARM Cortex-M3
• ● 48 KiB RAM, 256 KiB Flash
• ● 5x UART, USB
• ● Debug support (with ST-Link)
• ● Programmable in C++, with FreeRTOS and stm32cube framework, in Platform.io
• ● Our bootloader based on sboot_stm32.

ESP32-DevKitC