This wooden box is a wireless pinball controller and tablet stand. The idea is to set it on a workbench to give you some of the thrill of standing and playing the real thing. [Jeff] has been rather addicted to playing a pinball app on Android lately, and started the journey because he needed a way to give his thumbs some relief.
An Arduino monitors buttons on either side of this wooden controller. [Jeff] is new to working with hardware (he?s a Linux Kernel developer by trade) and was immediately struck with button debouncing issues. Rather than handle this in software (we?ve got a super-messy thread on that issue with our favorite at the bottom) he chose a hardware solution by building an SR latch out of two NAND gates.
With the inputs sorted out he added a BlueSMiRF board to the project which allowed him to connect a Nexus 7 tablet via Bluetooth. At this point he ran into some problems getting the device to respond to his control as if it were an external keyboard. His stop-gap solution was to switch to a Galaxy Tab 10.1 which wasn?t throwing cryptic errors. Hopefully he?ll fix this in the next iteration which will also include adding a plunger to launch the pinball, a part which just arrived in the mail as he was writing up this success.
We?ve embedded his quick demo video after the break.
Source: http://hackaday.com/2013/03/04/wireless-pinball-controller-for-tablet-gaming/
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