Found this project in my drawer again and thought r/pebble might appreciate it.

This is **Platano**, my DIY smartwatch project that I’ve been working on on-and-off for years. Every couple of years I dig it out, do a new revision, and then inevitably lose interest again. This is version 4.0 from 2024.

It has a 1.54" 200×200 e-ink display (not Pebble-style retroreflective LCD, but REAL e-ink), and I tried replacing the buttons with a scroll wheel because I thought that would be cool. It is cool… but also kind of terrible, so I’ll probably go back to buttons next revision.

The funny thing is: this board was designed *before* PebbleOS was open sourced. It coincidentally uses the same nRF52840 as the Pebble 2 Duo, I figured I’d try running PebbleOS on it anyway.

It boots and the UI mostly works. But since I only have 1MB internal flash (vs P2D's 1MB + 32MB external), it’s pretty memory-constrained and unstable. That is also why the watchface looks bad: most fonts are missing. Bluetooth is partially working too. The eventual goal was to sideload simple watchfaces.

Next steps? Maybe throwing it back in the drawer for two years and seeing what happens in 2028.

Just thought some of you might like this.

DIY PebbleOS watch with e-INK screen