-------------------------------------------------- Introduction ----------------------------------------------

The MR6 differential drive robot is based upon the hardware design by thingiverse user timmiclark. All links

provided below are current as of 8th February 2026.

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Aim is to achieve autonomous navigation tasks including object and hazard avoidance, line following and platform

to platform communication (where more than one robot is involved).

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Robot chassis design.

Requires access to a FDM 3d printer (or outsource based on available .3mf / .stl files)

- https://www.thingiverse.com/thing:2753227

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modifications/additions include:

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MicroController: Raspberry pico W. More info available via:

- https://www.raspberrypi.com/documentation/microcontrollers/pico-series.html

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DC brushed low power Motor Driver: Makerverse Motor Driver 2 Channel

- https://core-electronics.com.au/makerverse-motor-driver-2-channel.html

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Laser rangefinder: PiicoDev Laser Distance Sensor VL53L1X breakout module -

- https://core-electronics.com.au/piicodev-laser-distance-sensor-vl53l1x.html

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Port expansion board for Raspberry pi Pico microcontroller.

- https://www.dfrobot.com/product-2393.html or

- https://core-electronics.com.au/gravity-expansion-board-for-raspberry-pi-pico.html

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Line tracing IR emitter/detector trio.

https://www.jaycar.com.au/duinotech-arduino-compatible-triple-reflectance-sensor-module/p/XC4611

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DC Motors and gearbox.

- https://www.tamiya.com/english/products/70097/index.html

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Misc.

2 x LEDs and 330ohm resistors, hook-up wire, M3 screws, JST and crimp terminals.

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Addition of mounting components for the laser rangefinder and motor driver (see accompanying stl files as part of this remix).

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Decided to make two of these as I had the parts lying around and embarked on this as a side project.

Current program allows for cliff detection, obstacle avoidance and line following.

To Do: Transmit status messages to a 'home base' via local network.

Implement fellow robot seeking and locating behaviour - i.e find a friend.

Note: Program is still a work in progress as of May 26 2026. More to come!