Software apps and online services
Hand tools and fabrication machines
When my Dad's 60th birthday was coming up, I knew that I had to create something with tech. In our family we usually do something to keep the crowd entertained and each member of the family comes up with their own thing. Since I had some PunchThrough Bean lying around and a 3d printer that I rarely used I saw a great opportunity to use all of those.
So the idea was to create a quiz that we could project onto a wall but instead of some manual entry, have the audience vote on the right answer from the comfort of their chairs. For this purpose I wanted to create multiple "boxes" or devices with 4 buttons and a screen which would show the choice they voted for.
Here is a view of what those boxes looked like in their final iteration:
- on/off switch
- empty space for and 8x8 led matrix
- 4 buttons
- mini-usb charging port
To arrive at this final design I went through 4 major iterations on the box design, changing the size and adding extra spaces to hold the various components inside:
You can see the square area for the screen which simply shines through the plastic, the cutouts for the buttons and the space on the right side for the on/off switch. The Bean goes into the top of the box, just above the screen.
The backplates also evolved during this stage:
Here is a picture of the internal parts:
List of required parts:
- Mini usb lithium charging circuit
- 300mAh 3.7V LiPo battery
- Wires in various lengths
The voting part was done completely as a static webpage and can easily be updated with pictures and quiz questions.
On the Bean side I wrote a small custom program to interpret the button presses and send out a specific event via Bluetooth to any connected device. It would also play custom animations on the screen for some extra fun :-)
Here are 2 short videos of the device in action: