Bala2

SKU:K014-C

Description

Bala2 is a balancing car application. This product is a self-balancing robot composed of the M5Stack Gray and the BALA2 motor base. The base uses the STM32F030C8T6 as the main controller, powered by two N20 encoded reduction motors, and has a built-in 1200mAh battery. The name "BALA" comes from the abbreviation of "Balance," and this is the second-generation product. The BALA2 base includes a rich set of interfaces, supporting 8 servo motors in addition to the regular PortB and PortC, with 4 interfaces directly connectable and the other 4 needing to be extended from inside the base. You can program it to move freely or develop remote control functions with WiFi. Even if you have never worked with balancing car programs before, you can quickly complete programming and control it using UIFlow. The product comes pre-installed with a balancing car application, using a PID closed-loop algorithm to maintain vertical balance during operation, and utilizes accelerometer and gyroscope attitude data to correct its direction and position.

Tutorial

Usage and Sensor calibration

The BALA2 has been calibrated at the factory and will automatically maintain balance when powered on. If manual calibration is needed, please refer to this tutorial.

Features

9-axis attitude sensor
Dual-wheel drive, PID control balance
Grove expansion interface (PORTB/PORTC)
8 servo motor drives, 4 external, 4 internal
Supports WiFi, programmable
Built-in speaker
Supports TF card expansion
Compatible with LEGO
I2C communication: 0x3A
Development platforms
- MicroPython
- UIFlow
- Arduino

Includes

1 x Gray
1 x Bala2 Base
2 x HY2.0-4P connection cables (20cm)
4 x wheel hub connectors
2 x LEGO arms
1 x hex key
1 x USB Type-C cable (1m)

Applications

Balancing car

Specifications

Specification	Parameters
ESP32	240MHz dual-core, 600 DMIPS, 520KB SRAM, Wi-Fi
Flash/RAM	16MB Flash
LCD	2-inch, 320x240 color TFT LCD, ILI9342C
Speaker	1W-0928
MEMS	BMM150+MPU6886
Motor drive	HR8833
Base controller	STM32F030
Interfaces	GROVE I2C x 1/UART x 1/GPIO x 1/SERVO x 4(+4 Extendable Channels)
Battery capacity	1200mAh
Net weight	157.0g
Gross weight	337.0g
Product dimensions	54 x 54 x 65mm
Packaging dimensions	100 x 100 x 100mm
Casing material	Plastic

Schematics

PinMap

HY2.0-4P

Fire	G22	G21	G26	G36	G16	G17
PORT A	SCL	SDA
PORT B			DAC	ADC
PORT C					RX	TX

Softwares

Arduino

Bala2 Balancing Example

Easyloader

Easyloader	Download Link	Notes
Bala2 Test Firmware Easyloader	download	/

Video

Power on and run, hold ButtonB + left power button to enter calibration mode, adjust with A/C, save with B button.