Overview

We found a cute little robot on thingiverse that used a simple, yet clever locomotion system.  Simple in that it used a single yellow (dual shaft) TT motor to control both sides, with the addition of only a battery and power switch.

The basic design is, as I said, clever. What could be done to expand on it? We could use two motors. A CRICKIT would provide finer, individual control of the motors. Using the Feather M0 Bluefruit with the Featherwing CRICKIT would let us drive it remotely. All this additional hardware will require the robot to be larger.

TT Motor All-Metal Gearbox - 1:90 Gear Ratio

PRODUCT ID: 3802
These durable (but affordable!) gearbox motors (also known as 'TT' motors) are an easy, low-cost way to get your projects moving. This is a TT DC All-Metal Gearbox...
$5.95
OUT OF STOCK

Adafruit Feather M0 Bluefruit LE

PRODUCT ID: 2995
Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller...
$29.95
IN STOCK

Adafruit CRICKIT FeatherWing for any Feather

PRODUCT ID: 3343
Sometimes we wonder if robotics engineers ever watch movies. If they did, they'd know that making robots into slaves always ends up in a robot rebellion. Why even go down that...
$29.95
IN STOCK

3 x AA Battery Holder with 2.1mm Plug

PRODUCT ID: 3842
Here's another addition to our growing family of AA battery holders. A holder for three (3) AA batteries!...
$2.95
OUT OF STOCK

If you want to use a LiPo:

Lithium Ion Battery Pack - 3.7V 6600mAh

PRODUCT ID: 353
Need a massive battery for your project? This lithium ion pack is made of 3 balanced 2200mAh cells for a total of 6600mA capacity! The cells are connected in parallel and spot-welded...
$29.50
IN STOCK

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A

PRODUCT ID: 2465
PowerBoost 1000C is the perfect power supply for your portable project! With a built-in load-sharing battery charger circuit, you'll be able to keep your power-hungry...
$19.95
IN STOCK

When working at your bench/desk, this wall powered supply will give you solid power and avoid issues with batteries running low.

5V 2A (2000mA) switching power supply - UL Listed

PRODUCT ID: 276
This is a FCC/CE certified and UL listed power supply. Need a lot of 5V power? This switching supply gives a clean regulated 5V output at up to 2000mA. 110 or 240 input, so it works in...
$7.95
IN STOCK

You'll probably want to add these to the legs and body for traction and noise dampening.

Little Rubber Bumper Feet - Pack of 4

PRODUCT ID: 550
Keep your electronics from going barefoot, give them little rubber feet! These small sticky bumpers are our favorite accessory for any electronic kit or device. They are sticky, but...
$0.95
IN STOCK

Additional Hardware

Hex head bolts are the easiest to work with. 

4 x M3 x .5mm x 25mm Machine Screws
Metric Pan Head Screws for mounting the motors
4 x M3 x .5mm Hex Nuts
Metric Hex Jam Nuts for mounting the motors
4 x M3 Flat Washer
Metric Sized Round steel Washers for mounting the motors
1 x M3 Threaded Inserts
Brass Threaded Insert Nuts 100PCS for the CRICKIT tray
8 x M3 x .5mm x 6mm Machine Screws
Metric Pan Head Screws for mounting the CRICKIT to its tray
8 x M3 x .5mm x 20mm Machine Screws
Metric Pan Head Screws for mounting the CRICKIT and battery trays
10 x M3 x .5mm x 6mm Flat Head Machine Screws
Metric Flat Head Screws, with angled head for the joint caps
This guide was first published on Oct 17, 2018. It was last updated on Nov 19, 2018. This page (Overview) was last updated on Oct 17, 2018.