Decoding my
60 days of sitting

How does the 'butt-tracking' works?

I already have a pre-existing AIKA seat cushion where I placed the force sensors and a Secret Lab chair which I heard it scream it didn't want to get involved in this ridiculous nonsensery.

Six force sensors are placed under the cushion seat and measures applied weight.

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The microcontroller measures the voltage levels generated from the varying force sensors.

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Measurement occurs whenever a pressure in the seat gets detected or whenever the chair moves

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The data is then logged to the Google sheets via internet through Wifi.

How did I built the tracking devices?

Device setup

I built the prototype with a simple breadboard and placed inside a thin and disposable tupperware I stole from my housemates cupboard.

Then I placed the simple device prototype inside a tote bag, hanged behind the seat so it can flexibly move around along with the chair.

Force sensors over the seat cushion

Each sensors were placed in a circular manner. It involved with a lots of spaghetti wires as you can see in the photos.

Movement with temperature/humidity sensors

These sensors were encased inside a tiny enclosure and then placed separately under the back seat.

You wonder I placed them there? If we place it over the seat cushion, it would be uncomfortable to sit on a lump of block, don't you think?

How did I categorized my 'butt-prints'?

I classified my seat pattern by calculating the angular average of the different combinations of activated sensors. Then, the average angle is then compared from the 10 defined set of directions and the 'butt-print' is then binned to its equivalent direction.

Explore my 60 days of sitting

If we try to reimagine how I actually seated using the collected seat pattern data, how do you think I would actually look like?

Inspired from a dance dance revo gaming mat, here's the scrolly visualization of the entire days of sitting.