Inventory:

Boards

(Prices do not include delivery)

Arduino Uno - £20

L298N Dual H Bridge Motor Controller from Sainsmart, I originally bought a different version - a red one from Flux Workshop didn't work and may have been damaged - £8

HC-06 Bluetooth Module - £8

Electronics

2x 300 RPM geared 12v motors - £1.86 each

12v 1.3Ah Lead Acid Battery (the motors draw approximately 0.4 Ah each and the motor driver takes a small amount for its logic) - £11.50.

Arduino wires - £2

Ordinary 9v battery and connector from arduino to battery - £1.80

Electrical wires and crimps for connecting battery to motor driver

USB cable type A male to type B male - for connecting ardunio and PC - £3

Hardware

4 rubber tyre 50mm swivel casters from Toolstation or Screwfix - £13 for 4

2x Lynxmotion HUB-02 Universal Hub - 6mm from robot shop - £5.50

10mm and 6mm thick acrylic plastic - cut on circular saw or laser cutter or bought cut to size from plastic people

Software

Android studio software download

Arduino software download

Phone

An up to date Android 5 or similar phone is required - the Samsung S5360 Galaxy Y (£50 in 2015) uses an old 2.6 version of Android which cannot run the app and has issues connecting via usb. A Motorola moto e (£100 in 2015) with Android 5 works fine. Although the build.grade in Android Studio can be set to run on older versions this will probably cause problems due to the use of up to date accelerometer and bluetooth libraries.