Hat CBack Driver

SKU:A100

Description

Hat CBack Driver is a servo driver board compatible with M5StickC, using the STM32F030F4P6 control scheme and communicating with M5StickC via the I2C interface. It provides 4 sets of PWM servo drive interfaces (the servo drive power is directly connected to the internal battery of M5StickC, capable of driving standard servos such as SG90). This module extends the I2C bus at the top of StickC and additionally provides a GPIO interface through STM32. It can be used for general logic level and ADC analog signal input reading. The back is designed with LEGO-compatible holes, allowing users to easily integrate this driver board into LEGO brick structures, suitable for building controllable structures such as servo robotic arms.

Features

4 x Servo Drive
Compatible with C/C Plus
Interface Expansion (GPIO, I2C)

Includes

1 x Hat CBack Driver
2 × Hex Screws M2*5
1 × Allen Wrench

Applications

Servo Controller
Robot Control

Specifications

Specification	Parameter
Communication Protocol	I2C:0x38
Working Current	15mA
Net Weight	9g
Gross Weight	13.5g
Product Size	23.7 x 49.2 x 21mm
Package Size	136 x 92 x 22mm

Schematics

PinMap

M5StickC	G0	G26	3.3V	GND
C Back Driver	SDA	SCL	3.3V	GND

Softwares

UiFlow1

Hat CBack Driver UiFlow1 Docs

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

Making a four-wheel cart with CBACK DRIVER