SmartRuler Pro – ESP32-powered motorized ruler with 0.5mm precision

Show HN: SmartRuler Pro – ESP32-powered motorized ruler with 0.5mm precision

SmartRuler Pro – ESP32-powered motorized ruler with 0.5mm precision is a business in show hn launch.

Profile

My dad cuts window profiles in his workshop and I kept watching him measure, mark, and reposition by hand hundreds of times a day. So I built him a motorized ruler that moves to any position you tap on a tablet.It runs on an ESP32-S3 over BLE 5.3, uses hardware-timed stepper pulses (RMT peripheral, no CPU jitter) to hit 0.5mm accuracy, and pairs with a Bosch GLM laser meter - point, measure, and the ruler moves there. No typing, no transcription errors.You can also upload cut lists from a file or email and it runs each position in sequence - perfect for batch cutting window profiles where you need the same set of measurements repeated all day.Open hardware: off-the-shelf linear rails, NEMA 2

Within the show hn launch space, the company focuses on its core offering rather than a broad product line.

The company is listed at the Show HN launch stage of development.

Website: smart-ruler.bunnytech.io