Build an e-ink speed reader
A pocket e-ink reader that flashes a book one, two or three words at a time in the same spot, so your eyes stop moving and you just read. A wide 5.79 inch Good Display panel, an ESP32-S3, a d-pad and two shoulder keys in a 3D printed case. It is also a normal page-by-page reader, and books go to it over WiFi. Add-ons for battery and headphones.
Build a $40 WiFi e-reader
A build guide for a homemade ESP32-S3 e-paper reader: parts, how to choose an e-ink panel, power options with or without a battery, and an automated news brief pipeline using Claude Code routines and a small server.
Build a toddler phone that calls grandma
A phone a toddler can use on their own: a retro USB-C handset, an ESP32-S3, and one big lit arcade button per family member. Each light is on only during the hours that person is happy to take a call. Calls go out as real phone calls through your own Twilio account, so numbers and call logs never touch anyone else's server. Flash it from the browser and set it up from a page on your WiFi.
A solar walker that carries a plant into the sun
An eight-legged solar robot that carries a potted orchid around the room. Two wings of small solar panels charge a AAA pack, an ESP32-S3 brain board reads light sensors on the wing tips, and the robot walks a few short hops an hour to follow the sun patch from your window. Klann linkage legs, one motor per side, all 3D printed. It also logs soil moisture, temperature and humidity, and uses a distance sensor to steer around obstacles.
Coming soon. Sign up to the email list to know when it's ready.
An e-ink speed reader you build yourself
A pocket e-ink reader that flashes a book one word at a time: a wide 5.79 inch E Ink panel, an ESP32-S3, a d-pad and a USB-C battery. Load your own books over WiFi, set the pace, and read without a backlit screen. Open source firmware and a 3D printed case.
Coming soon. Sign up to the email list to know when it's ready.
A $13 radar trip wire for your hallway
Count people walking in and out of a room and log overnight movement with a $3 mmWave radar and an ESP32.
_stition is my studio name for everything I build in the open: e-paper gadgets, sensors, and the Muon Sortes cosmic ray clock. Every guide here is free, with open source firmware and hardware files. When enough people want one, a guide can also get a kit, made in a single batch once enough refundable deposits are in. More guides land here as projects finish; the dev log has the unfinished versions, mistakes included.