1. BitBotXL
This is for BitBot XL v1.1, 2020 and v1.2, 2022.
v1.2 has drive straight calibration using a downloadable hex file. See: https://4tronix.co.uk/blog/?p=2479.
For the makecode github of its code see: https://github.com/4tronix/BitBot/blob/master/bitbot.ts
Warning
v2 microbits are required for the module used here.
v1 microbits lack the memory space required.
For product info:
The 4tronix BitBOt XL has 2 independent motors, 2 digital line following sensors for line tracking, optional distance sensor for obstacle avoidance, 12 LEDs, 2 analog light sensors and a buzzer, all powered by 3 AAA batteries.
The servo outputs and are not used here.
Dimensions 11cm x 12cm x 5.5cm (with vertical microbit)
1.1. Pins
The pin numbers used to control different parts are below.
Pin |
Purpose |
|---|---|
pin0 |
Buzzer |
pin1 |
Right Light Sensor |
pin2 |
Left Light Sensor |
pin16 |
Left Motor |
pin8 |
Left Motor Backwards |
pin14 |
Right Motor |
pin12 |
Right Motor Backwards |
pin13 |
12x LEDs |
pin15 |
Ultrasonic |
I2C address 0x1c (28)
Left Line Sensor bit 0
Right Line Sensor bit 1