Secure Offline BLE Drift Bike Control
Budget: $1,500 – $3,000 USD
I need a turnkey Bluetooth Low Energy control system that lets my staff manage indoor electric drift bikes from an Android tablet. When a rider is ready, the attendant should be able to start or stop a bike over BLE with a single tap; if the link is lost or the preset ride time expires, the bike must shut itself down automatically via an onboard, hard-wired fail-safe timer that works even when the tablet or radio link is unavailable. A physical emergency-stop button on each bike must always override everything.
Security is critical: only authorised tablets may connect, commands must be encrypted, and the bikes must default to a powerless, safe state on any fault. The system will run completely offline inside a shopping mall, so no cloud services are allowed.
I operate between 11 and 20 bikes at the same time and need reliable coexistence in a noisy RF environment. Each bike should log ride start/stop times locally and export that data to the tablet for daily reports so I can track usage patterns and detect any unauthorised activity.
Deliverables
• Embedded firmware for the bike-side BLE module with secure pairing, local timer logic, shutdown routines, and activity logging
• Android tablet app with a simple dashboard to select a bike, issue start/stop, display live status, download logs, and store them in CSV or SQLite for later analysis
• Wiring diagram and BOM for integrating the BLE module, power relay, and hardware E-stop into the existing bike electronics
• Test procedure that demonstrates safe-state behaviour on link loss, timer expiry, power failure, and emergency-stop activation
• Source code, build instructions, and brief documentation so my technical staff can maintain the system in the future
Acceptance will be based on:
1. Proven operation with at least 15 bikes running concurrently in an offline environment
2. Successful shutdown within the preset time even when the tablet is turned off mid-ride
3. Complete, tamper-proof ride logs exported to the tablet without data loss
4. Immediate motor cut-off when the hardware E-stop is pressed
If you have solid experience with BLE device firmware, secure Android app development, and fail-safe design for mobility or amusement applications, your expertise will be invaluable on this project.
Security is critical: only authorised tablets may connect, commands must be encrypted, and the bikes must default to a powerless, safe state on any fault. The system will run completely offline inside a shopping mall, so no cloud services are allowed.
I operate between 11 and 20 bikes at the same time and need reliable coexistence in a noisy RF environment. Each bike should log ride start/stop times locally and export that data to the tablet for daily reports so I can track usage patterns and detect any unauthorised activity.
Deliverables
• Embedded firmware for the bike-side BLE module with secure pairing, local timer logic, shutdown routines, and activity logging
• Android tablet app with a simple dashboard to select a bike, issue start/stop, display live status, download logs, and store them in CSV or SQLite for later analysis
• Wiring diagram and BOM for integrating the BLE module, power relay, and hardware E-stop into the existing bike electronics
• Test procedure that demonstrates safe-state behaviour on link loss, timer expiry, power failure, and emergency-stop activation
• Source code, build instructions, and brief documentation so my technical staff can maintain the system in the future
Acceptance will be based on:
1. Proven operation with at least 15 bikes running concurrently in an offline environment
2. Successful shutdown within the preset time even when the tablet is turned off mid-ride
3. Complete, tamper-proof ride logs exported to the tablet without data loss
4. Immediate motor cut-off when the hardware E-stop is pressed
If you have solid experience with BLE device firmware, secure Android app development, and fail-safe design for mobility or amusement applications, your expertise will be invaluable on this project.