Here is a quick parts list of the cheapest items we could find that are similar to what we used. The choices and flexibility you have with this are vast. Any robot that takes incoming serial commands could be controlled by this project, or you could hack it to work over BlueTooth too.
- $16 Bare bones Ardunio (or a $25 fully assembled one to save you time)
- $3 Micro servo (the Truckbot holes fit the micro servos but you might also try Parallax continuous rotation servos to save time from modifying these)
- $0.25 Hex inverter (handles 3.3v to 5v conversion if you aren’t using a 3.3v Arduino – a $2 Sparkfun logic level converter is also an option)
- $4 HTC USB connector ($11 for full breakout board)
- $3 Mini breadboard
- $1 rear caster
- $4 misc. cardboard, strap ties, wires
That’s a total of just $30 for a remote controlled, GPS having, text-to-speech talking, roaming robot! the shipping costs could eat up your budget so buying local helps, or you might want to pay slightly more for parts to get them all from the same supplier where possible. You can save time by buying fancier parts but you should still be under $50 before shipping.
A quick 5-step guide to putting together the truckbot is:
- Laser cut pieces in cardboard or acrylic using the PDF file from the source code
- Attach breadboard, rear caster, 9V battery, servos, and Ardunio using strap ties and glue
- Glue servo arms to wheels and attach with the small servo screw
- Connect wiring for servos, Arduino, breadboard, HTC USB board, and battery
- Mount phone with large strap tie and insert USB plug to bottom
You can find more details in our picture galleries or this slideshow of a full kit.