OpenPipe’s MIDI-USB Shield connects an Arduino to an iPhone bagpipe app. I just love the breakout board which is long and studded with capacitive touch sensors. It can be used to create a pipe-like player for the setup for a more authentic feel. [via Hacked Gadgets]

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal

  • chuck

    My sound card died so forgive me if this was adressed in the video. I’m looking to add breath control to some of my projects. Can you direct me to a component that converts wind speed or air pressure into a variable resistance? As always the cheapest solution is probably the best and any ideas re: recycling or repurposing said component would be awesome.

  • John Honniball

    May I suggest a hot-wire sensor? It’s not a low-power solution, but it’s analog! If you can arrange to pass a constant current through a fine wire, so that it heats up, you can then blow on it and it’ll cool down. More breath, more cooling. Now, the resistance of a wire (nichrome or something similar) will vary with temperature. Given a constant current flow, the voltage across the wire will vary as the resistance changes. So, by monitoring the voltage, you can make a breath sensor. This principle is used in air mass-flow sensor for IC engine management systems. I’ve done it with small filament light bulbs, with the glass removed (they burn up fast, though).