Here is an overview of the materials that will be needed.
Each individual page has more details and links on where you can purchase some of these materials.
> 1, 4x8 Sheet of Plywood. I used a piece of shop-grade maple ply.
> 2, 2x2 for the structural frame
> ~2 yards of red nylon strap fabric
> Some loose red fabric from a fabric store
> Latex tubing (Inner Diameter: 1/8", Outer: 1/4")
> Wood Screws ( 5/16, 3", 4" )
> 1 Rechargeable battery powered air pump (Coleman Rechargeable Quick-Pump)
> 1 unidirectional "Check Valve"
> A piece of a garden hose
> Liquid Latex & Red Pigment, or a large red balloon of some kind.
> 1, 20cm Stretch Sensor
> 1 red RCA cable, Male and female headers
> 1 10K Potentiometer with large sized knob
> 1 3-way toggle switch
> 2 Arduino
Microcontrollers (Diecimille or newer)
> 2 9V battery clips with 5mm (center positive) male jacks.
> 2 xBee wireless modules
> 2 xBee shiels from LadyAda
> 1 FTDI cable for programming the xBees
> 1 LMC662, "rail-to-rail" OpAmp chip
> Misc Electronics components (see circuit diagrams for details).