Quo Vadis ? Stories from a home laboratory

27Dec/1160

Hacking a weighing scale

Last couple of weekends I mainly spent at home. This was ideal opportunity¬†to do some home maintenance (cleaning ūüôĀ ). Somewhere under the bed I found a weighing scale that my wife and I occasionally use. This is the simple digital weighing scale from Ikea - GRUNDTAL. During last months I stumbled¬†upon couple of articles¬†about automatic weight logging, so the outcome was obvious: the next home project - wireless logging weighing scale. Luckily I already had necessary¬†tools and parts, so the next couple of days were fun.

IKEA GRUNDTAL Weghing scale

The idea was to connect the scale to Arduino Pro Mini, decode the readings from the scale, and send the weight wirelessly, using RFM12B radio module from HopeRF, to the central Homy system. There, the weight with the timestamp would be persisted into the database and published to Facebook wall.

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