Wednesday, August 23, 2006

Weighing in at 275

The first microcontroller project I want to build is a device that lets me easily weigh in every morning.

Today I measure my weight on a scale and write it in a notebook. Then I write that weight into a weight log. Theoretically I make some calculations to give a weighted average to see how much I am gaining or losing over the past 10 days. Then once a month I type is data into the computer.

It would be great if all of this could be automated! Building or interfacing into the scale is a bit much for a first project, but I think I can make a handheld weight log that is focused on user centered design and giving interesting feedback.

It should support Patty and I at a minimum, so it is multi-user. For data entry, it should remember the previous day's weigh-in for the person. You should be able to switch users, increase and decrease the weight, and save a weigh-in. This data should make it's way into a webservice.

Frosting... Users are identified with numbers initially 1, 2, 3. Via a website the user should be able to change that a customizable way. All weigh in devices would have a GUID and be recognized by the webservice. The device would get it's configuration for this service.

Feedback to the user on their weight loss or gaining progress could be given somehow.

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