A100

C Back Driver SKU:A100 Description C Back Driver is a steering gear drive board compatible with M5StickC. It adopts STM32F030F4P6 control scheme, uses I2C communication interface to communicate with M5StickC, and provides 4 sets of PWM steering gear drive interfaces (the drive power of the steering gear is directly connected to the M5StickC The internal battery can drive general specifications of the steering gear, such as: SG90, etc.). This module leads the I2C bus at the top of StickC and provides an additional GPIO interface through STM32 expansion. It can be used for general logic level and ADC analog signal input reading. With the LEGO compatible hole design on the back, users can easily integrate this driver board into the LEGO building block structure, which can be used to build controllable structures such as steering gear manipulators. Product Features 4x Servo driver Compatible with C/C Plus Interface expansion (GPIO, I2C) Application Servo controller Robot control Contains 1x C Back Driver 2× Hexagonal screws M2*5 1× HEX KEY Specifications Resources Parameter Communication protocol I2C: 0x38 Working current 15mA Net weight 9g Gross weight 13.5g Product size 23.7*49.2*21mm Package size 42*40*30mm Pin mapping M5StickC GPIO0 GPIO26 3.3V GND C Back Driver SDA SCL 3.3V GND Schematic Example This case uses C BACK DRIVER to realize 4-channel servo control and ADC reading. Please select the corresponding case program below according to the equipment you are using. StickC Plus StickC Protocol Protocol type I2C I2C Address: 0x38 /*------------------------------------------------ -------------------------------------------------- */ | SERVO_ANGLE_REG | 0x00-0x03 | ------------------------------------------------- ----------------------------------------------- | servo_1_reg[0] 0x00 | R/W | SERVO1 Angle value(0~180) | servo_2_reg[1] 0x01 | R/W | SERVO2 Angle value(0~180) | servo_3_reg[2] 0x02 | R/W | SERVO3 Angle value(0~180) | servo_4_reg[3] 0x03 | R/W | SERVO4 Angle value(0~180) /*------------------------------------------------ -------------------------------------------------- - /*------------------------------------------------ -------------------------------------------------- */ | SERVO_PULSE_REG | 0x10-0x17 | ------------------------------------------------- ----------------------------------------------- | servo_1_reg[0:1] 0x10-0x11 | R/W | SERVO1 PULSE value(500~2500) | servo_2_reg[2:3] 0x12-0x13 | R/W | SERVO2 PULSE value(500~2500) | servo_3_reg[4:5] 0x14-0x15 | R/W | SERVO3 PULSE value(500~2500) | servo_4_reg[6:7] 0x16-0x17 | R/W | SERVO4 PULSE value(500~2500) /*------------------------------------------------ -------------------------------------------------- - /*------------------------------------------------ -------------------------------------------------- */ | PPORTB_ADC_REG | 0x20-0x21 | ------------------------------------------------- ----------------------------------------------- | portb_adc_reg[0:1] 0x20-0x21 | R | PPORTB ADC value(0~4095) /*------------------------------------------------ -------------------------------------------------- - /*------------------------------------------------ -------------------------------------------------- */ | PPORTB_OUTPUT_REG | 0x30 | ------------------------------------------------- ----------------------------------------------- | portb_output_reg[0] 0x30 | R | PPORTB Output Digital value(0/1) /*------------------------------------------------ -------------------------------------------------- - /*------------------------------------------------ -------------------------------------------------- */ | PPORTB_INPUT_REG | 0x31 | ------------------------------------------------- ----------------------------------------------- | portb_input_reg[0] 0x31 | R | PPORTB Input Digital value(0/1) /*------------------------------------------------ -------------------------------------------------- - Video Use C BACK DRIVER to make a four-wheeled car