the café

carlOS build log 3
subj: breadboards and eink

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yo fuuuuuuck dynamic bitmap generation, okay?

c3.7s struggled with the e-ink display, and I didn't have time to dig into it but the firmware is actively rejecting a refresh rate higher than 0.33Hz

and if you just did the math in your head, that's correct — one third of a hertz. one image every *three minutes*. NO idea why.

but no matter. 

bc my first breadboard prototype is up.

an RP2040 rocking temp/eCO2/TVOC sensors, graphed out over a max of ~49 minutes onto a flexible 296x128px e-ink display (which I already damaged 😅 not as flexible as I thought)

its an Aranet to graph the air quality in our kitchen when we burn bacon (and how long it takes to return to fresh air levels afterwards)

😁

so I'll let it run for a few days while I work on modeling the main unit's case, and then rip it apart when I need the breadboard for the next prototype.

learned a lot.

feelsgoodman.