The Banana Pi BPI-TriodeCar is a product designed for education on entry-level engineering. Supporting both the BBC Micro:bit and Web:bit(BPI:bit), the TrideCar can also be equipped with peripherals such as, buzzer, and ultrasonic sensor.

Key Features

• Two switchable modes: a comparator(LM393) or with Micro:bit/ Web:bit.
• Supports MakeCode, Webduino Blockly, and MicroPython programming.
• Provides soldering area for more peripherals extension.
• I2C Connector(3.3V) onboard.
• Screwholes for LEGO blocks extension.
• Line Tracking.

Hardware interface

Hardware spec

• Power: 3.6V~3.7V Batteries
• Photoresistor(analog) * 2
• SR04, SR04P ultrasonic sensor interface(5V) * 1
• I2C interface(3.3V) * 1
• IO extension port * 2(P5 P0 P3 P4 P6 P7 P8 P9 P10 P16 P11)
• TT Motor * 2 (P14 P15)
• Motors max speed: 90 rpm
• Motors driving mode: PWM
• M3 Lego extension hole * 6

Online wiki page:

https://wiki.banana-pi.org/BPI_Triode-Car_kit