triki — Żabka Triki BLE token

▶ Live Web Bluetooth controller

Open it in Chrome / Edge to stream the token's motion straight from the browser and watch a live 3D orientation.

Notes and tooling for the Żabka Triki (a.k.a. Tiki) — a collectible BLE token shaped like a bottle cap (crown cap), built around an nRF52810 BLE SoC and an LSM6DSL accelerometer/gyroscope. The goal of this project is to read the token's motion sensors over BLE and reuse it as a motion controller.

Demo

video.mp4

If the player doesn't load, watch the clip directly.

📖 Docs site: https://flopsstuff.github.io/triki/

Cap	Board
Triki logo	Żabka "Z" logo, nRF52810

Hardware

Component	Part	Role
MCU	nRF52810-QCxx (QFN, marking N52810 QDAAE0)	BLE SoC, Cortex-M4
IMU	LSM6DSL	3-axis accel + gyro (motion input)
External flash	Macronix MX25R8035F (SPI NOR, 8 Mbit / 1 MB)	external storage
Clock	32.000 MHz crystal
Other	BLE antenna, LED, button

Repository layout

assets/      device photos (tracked)
docs/        VitePress documentation site (tracked)
packages/    triki-controller — the published npm package (tracked)
tools/       BLE tooling + scripts (tracked; .venv ignored)

BLE interface

Advertising: name TRIKI <serial> / Triki <serial>, address XX:XX:XX:XX:XX:XX (random static), service 0x0001.

Personal project on my own device. No device-identifying values (serial, BLE MAC) are published — placeholders <serial> / XX:XX:XX:XX:XX:XX are used throughout.

GATT (read with bleak on macOS):

Nordic UART Service  6e400001-b5a3-f393-e0a9-e50e24dcca9e
  RX   …0002  [write, write-no-response]   commands host→token
  TX   …0003  [notify]                     responses token→host
  ctrl …0004  [read, write]  = 0x00        control register (green LED)
Battery 0x180F → 0x2A19 = 0x64 (100%)

The token speaks a request/response protocol over NUS. The command that starts the accelerometer/gyroscope stream and the 14-byte motion-frame format are documented in docs/guide/ble-protocol.md and docs/guide/imu-streaming.md. Live decoding is verified at ~104 Hz (tools/ble_imu_stream.py).

Tooling

Details and commands in tools/README.md.

• bleak 3.0.2 (venv) + scripts:
  • tools/ble_scan.py — BLE scanner
  • tools/ble_dump.py — connect and dump the GATT map
  • tools/ble_nus.py — interactive NUS console (write to RX, listen on TX)
  • tools/ble_imu_stream.py — start + decode the accel/gyro stream
• Web Bluetooth page — in-browser orientation visualizer: open the live controller (guide), or run it locally.
• triki-controller (npm) — the reusable Web Bluetooth client + Madgwick fusion core, as a dependency-free TypeScript package (guide).

Credits and contributors

• Piwencjusz — PCB photos, NOR dump, OpenOCD probing
• tsuki — Deeper dive into hw and sw RE, SEGGER/J-Link analysis
• AND-Y0 — BLE communication protocol description