Building Ed Konowal's Raspberry Pi-based Internet Pressure Gauge (as seen at SIGGRAPH 2014!) costs about $425 in parts ($100 for the vintage gauge on Ebay, including metal-shop time for the refurb), or you can support the kickstarter for his kit, which gets you everything except the gauge for $310 (for $500 he'll build you one, but you still have to supply the gauge). Read the rest
An interesting read via Boing Boing
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