# BaseX SKU:K037

## Description **BaseX** is a special base compatible with LEGO EV3 motor. The structure design is similar to base26, supporting multiple ways of fixation, and an additional LEGO connection base is provided. When building the LEGO structure, Basex can be easily embedded in the work. Basex can be connected to 4-way (RJ11) LEGO motor at the same time, supporting angle / speed reading and control, and perfectly compatible with the original motor functions. In addition, the base provides two servo interfaces, which can directly control the rotation angle of the servo.There is a motherboard PDM microphone for sound collection. In order to adapt to different use scenarios, a UART interface (16 / 17) and a GPIO interface (26 / 36) are provided to make access to various sensors more flexible. A 950mAh battery is built in the base, which can be charged through the usb-c interface of m5core to extend the endurance. In order to improve the driving ability of the interface, the base is equipped with a DC power socket, which can be powered by an external 9-12v power supply to provide a stable power supply for the motor. ## Product Features - 4-way RJ11 LEGO motor interface (total maximum output current 2A) - 2-way servo interface (total maximum output current 2A) - 1-way UART - 1-way GPIO - On board PDM microphone (GOIO 34) - On board DC-DC conversion (9 ~ 12V,independent power supply for the motor only) - Built in 950mAh battery - Multiple fixing methods / LEGO hole connection support ## Application - Encoder motor / servo controller - LEGO DIY intelligent control ## Include - 1x BaseX - 1x LEGO base - 2x M3 * 5mm 304 Stainless steel hexagon socket bolt - 2x M3 * 32mm 304 Stainless steel hexagon socket bolt - 1x M3 wrench ## Specification

Resources	Parameter
Net weight	59g
Gross weight	110g
Product Size	545426mm
Package Size	1506540mm

## EasyLoader

download EasyLoader

>1. EasyLoader is a simple and fast program burner. Every product page in EasyLoader provides a product-related case program. This can be burned to the M5 device through simple steps, and a series of function verifications can be performed. >After downloading the software, double-click to run the application, connect the M5 device to the computer through the data cable, select the port parameters, click **"Burn"** to burn the program (**For M5StickC, set the baud rate to 115200 or 750000**) ?>3. Before installing and using the Easyloader for M5Core, you need to install CP210X driver (you do not need to install with M5StickC as controller)[Click here to view the driver installation tutorial](en/related_documents/M5Burner#install-usb-driver) ## I2C Control instructions I2C Slave address: 0x22

Function	Register address	Value
SERVO1_ANGLE_ADDR	0X00	0~180
SERVO2_ANGLE_ADDR	0x01	0~180
SERVO1_PULSE_ADDR	0x10	(uint16_t) 500~2500
SERVO2_PULSE_ADDR	0x12	(uint16_t)500~2500
MOTOR1_PWM_DUTY_ADDR	0x20	-127~127
MOTOR2_PWM_DUTY_ADDR	0x21	-127~127
MOTOR3_PWM_DUTY_ADDR	0x22	-127~127
MOTOR4_PWM_DUTY_ADDR	0x23	-127~127
MOTOR1_ENCODER_ADDR	0x30	int32_t
MOTOR2_ENCODER_ADDR	0x34	int32_t
MOTOR3_ENCODER_ADDR	0x38	int32_t
MOTOR4_ENCODER_ADDR	0x3C	int32_t
MOTOR1_SPEED_ADDR	0x40	-127~127
MOTOR2_SPEED_ADDR	0x41	-127~127
MOTOR3_SPEED_ADDR	0x42	-127~127
MOTOR4_SPEED_ADDR	0x43	-127~127

I2C Motor address:

Motor number	Motor Address
MOTOR1	0x50
MOTOR2	0x60
MOTOR3	0x70
MOTOR4	0x80

Mode config method: Motor address + nByte

Byte	Value
0	Run mode
1	position-p(3)
2	position-i(1)
3	position-d(15)
4\|5\|6\|7	position-point(Low effective)
8	position-max-speed
9	speed-p
10	speed-i
11	speed-d
12	speed-point

Motor run mode	Value
Normal	0X00
Position	0x01
Encoder	0x02

## Example ### 1. Arduino IDE [Click here to download Arduino code](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/BaseX) ### 2. UIFlow [Click here to download UIFlow code](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Base/BaseX/UIFlow)

## Video