A bumper car is usually driven by a crazed carnival-goer -- but we're going to build a self-driving Bumper Bot! This bot will use the Circuit Playground Express for brains and collision detection with its onboard accelerometer. The Crickit will provide all the muscle needed to drive two TT DC gearbox motors, as well as a micro servo direction indicator flag.

A small speaker and NeoPixels will also give us feedback while to bumper bot is out there having fun!!

Parts

1 x Adafruit CRICKIT

for Circuit Playground Express

1 x Circuit Playground Express

Round, Awesome Microcontroller Board

2 x TT Motor DC Gearbox

200 RPM 3 to 6VDC

2 x Orange and Clear TT Motor Wheel

for TT DC gearbox motor

1 x Micro Servo

180 degree rotation servo

1 x Mini Metal Speaker w/ Wires

8 ohm 0.5W

1 x Waterproof 3xAA Battery Holder

with On/Off Switch

1 x Male DC Power adapter

2.1mm plug to screw terminal block

1 x Alkaline AA batteries

3 pack

Materials and Tools

Small and medium corrugated cardboard boxes
Ruler
Hobby knife or scissors
Paper clip or safety pin
Double stick foam tape

You can watch the John Park's Workshop livestream build of the Bumper Bot here:

This guide was first published on Jun 13, 2018. It was last updated on Jun 13, 2018.

This page (Overview) was last updated on Jun 11, 2018.

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