A removable practice meter for Beyblade X string launchers. An analog optical sensor measures launcher-shaft RPM; an M5StickS3 K150 shows your peak, launch history, trends and tilt/rotation replay. The screen and battery are built in, so practice does not require a phone.
Website & build guide · USB updater · Releases
| Build | Sensor | Layout |
|---|---|---|
| LaunchLab | SparkFun analog QRE1113, ROB-09453 | Top Mount or Sidecar |
| LaunchLab (TCRT5000) | TCRT5000 / LM393, analog AO | Sidecar |
Sidecar puts the M5 on a separate carrier beside the sensor. Both sensors use the same current firmware; select your Sensor profile in Settings. Use the cradle and screws supplied with your chosen release; a common part name does not establish interchangeability.
- Gather an intact M5StickS3 K150, one analog sensor, three leads, printed mounts, the specified screws and a USB-C data cable. See the parts list.
- Download matching parts and follow QRE assembly and wiring or TCRT assembly and wiring. Wire AO/OUT → G1, VCC → Hat 3V3, GND → GND; leave DO disconnected. Grove red supplies 5 V.
- Prefer PETG for flexing clips, snap arms and screwed parts. Retain project modifiers/support blockers and reslice for your printer and filament.
- Back up factory firmware before First install. Use desktop Chrome or Edge and a data cable; review updater instructions and recovery.
The LaunchLab USB updater is the maintained interface for both sensors. Check its selected version and release notes before installing. Firmware source and published release files remain in this repository.
This repository bundles v102 sensor attachments and Top Mount/Sidecar v2 mounts. The website downloads include newer Top Mount v19 and Sidecar v7 packages. Follow each package’s matching guide and fasteners. Bundled hardware versions and checksums.
RPM is measured at the launcher shaft, not the Beyblade in the stadium. Tilt replay does not measure distance or compass heading. CAD and slicing checks do not establish physical fit, retention, fatigue or absolute calibration; test-fit your actual launcher and prints.
Device controls · Development and validation commands · Contributing
Original software uses MIT. Hardware packages retain their own attribution and share-alike notices. See LICENSE and third-party notices.