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The Product
 This is the original BIG 20.  It was roughly the size of a soccer ball, the screen bolted in, and it ran on a Raspberry Pi 3.  It has now been cannibalized for parts, but the shell remains as a reminder to the first step we took towa
The Case was held together with pins, and you can see here that we broke one of the posts that held the board. This first BIG 20 was printed on a makerbot 3D printer at Method design in San Francisco (Thanks David!). This device was just a project t
This is the second revision of the BIG 20 case.  It was printed at Star Rapid (Thanks guys!) on a stereolithography printer, with an ABS-like material.  It measures roughly 5" from side to side, and was intended as a fit-feel-function prot
 The plan for this design was to bolt it together, hence the three holes on the base.  We ended up not going with this design because A:  it doesn't look all that great, and B: those holes go awful deep, and they were driving up the p
This is the original circuit board that I designed and had manufactured.  It's based  heavily  on on the Feather Huzzah ESP8266 by Adafruit Industries (which can be fond here: https://www.adafruit.com/product/2821 ).  It's g
 This is a case concept I toyed around with to try and drive down the cost of molds.  it has a top panel and a bottom panel, and the two sides of the case are identical one another.  The window snaps into the top panel.  Again, t
Bottom side of the same case.
 Two identical case sides that fit together.
This is the second revision of the circuit board.  The only change is this one holds the battery, instead of just having a plug.
 This is the demonstration prototype.  3.5" from side to side, roughly 1 pound, and very close to what our final product would have looked like.  It was printed at Star Rapid, and uses the same circuit board as the previous revision.&
The back side.  Reset button, mode button, and charge port.  This prototype is epoxied together because I hadn't taken the time to develop snap fits yet.  
Marketing Prototypes
These are all the marketing prototypes, ready to be painted.
A close up shot of the marketing prototypes
Marketing prototypes, post painting.
PCBs for the marketing prototypes, and the screen that BIG 20 uses to display results.
PCB design
Prototyping for the next revision of boards, which run on an ESP32
This is the fleshed out version of the final board. It features an ESP32 microcontroller, on board storage, on board battery, two control buttons, a shake switch, USB charging, and a 10 pin ZIF connector to hook up to the screen.
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