Talking to your bike and other devices (wait, what?)
summary
Android apps connect to an e-bike over Bluetooth Low Energy using cloud-backed certificates for authorization and read/write of BLE characteristics, with a homegrown command queuer to queue many quick commands and a reordering of characteristic reads to make unlocking reliably fastest. Implementation uses Android Nearby/Fast Pair and companion device pairing to avoid location permissions, libraries like RXAndroidBle or Kable help, emulator BLE (Android Emulator 31.3.8) supports virtual testing, and OEM stack quirks and UWB are practical concerns.
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chapters (13)
- 0:00Introduction and overview
- 6:31Bluetooth internals and basics
- 9:18Android Bluetooth permissions
- 12:50Discovering Bluetooth devices
- 15:37Reading and writing characteristics
- 18:23Challenges of Bluetooth development
- 21:52Libraries to simplify Bluetooth
- 24:40Companion device pairing
- 29:15Secure connections and Android X
- 30:38Emulated Bluetooth in Android Studio
- 32:04Nearby and Fast Pair
- 33:49Ultra Wideband and future tech
- 35:54Summary and closing
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