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Dev.to
6/18/2026
I reverse-engineered my motorcycle's Bluetooth protocol to put Google Maps on the dashboard

I reverse-engineered my motorcycle's Bluetooth protocol to put Google Maps on the dashboard

Short summary

An engineer reverse-engineered a motorcycle's proprietary Bluetooth protocol using packet sniffing, decompilation, and Frida instrumentation to integrate Google Maps into the dashboard. He built REDLINE, a 14k-line Kotlin app that relays turn-by-turn directions to the cluster. The core lesson: reverse engineering success comes from treating all assumptions as hypotheses and documenting where you went wrong.

  • •Discovered a 30-byte proprietary message format by analyzing APK bytecode, HCI logs, and live Bluetooth traffic
  • •Built a complete Android app that intercepts Google Maps notifications and renders navigation on the motorcycle cluster
  • •Learned that staying honest about wrong turns is more valuable than the technical breakthrough itself

Generated with AI, which can make mistakes.

#research-breakthrough#open-source
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