Gears and transmission
Smart Shift Enclosure
- Bounding box
- 100 × 40 × 28 mm
- Engine
- 3D Printing B-rep
- Parameters
- 15
- Published
- November 4, 2026
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The prompt
Act as an embedded systems and IoT expert. I am developing an ESP32-based Smart Electronic Shifting Groupset for a bicycle as part of my IT capstone project. Write a complete Arduino C++ firmware that: Initializes Bluetooth Low Energy (BLE) server to communicate with an Android mobile app. Reads sensor data (such as cadence, gear position, and battery level). Controls a shifting mechanism (using stepper motors or servo motors) based on incoming Bluetooth commands or automated shift algorithms. Transmits real-time telemetry data back to the connected mobile app. Provide the complete code with clear comments explaining the pin configurations and logic. philipines materials ok\
Parameters
| Name | Value | Range |
|---|---|---|
| Width | 60 mm | 40 – 120 |
| Depth | 40 mm | 30 – 100 |
| Base height | 25 mm | 15 – 60 |
| Wall thickness | 2.5 mm | 1.2 – 6 |
| Floor thickness | 2.5 mm | 1.2 – 6 |
| Lid thickness | 3 mm | 1.2 – 6 |
| Corner radius | 5 mm | 1 – 10 |
| Screw post diameter | 6 mm | 4 – 10 |
| Screw clearance hole | 3.4 mm | 2.5 – 6 |
| Mount tab width | 12 mm | 8 – 20 |
| Mount tab length | 20 mm | 10 – 30 |
| Mount tab thickness | 3 mm | 1.5 – 6 |
| Mount hole diameter | 5.5 mm | 4.5 – 8 |
| Cable opening width | 12 mm | 6 – 24 |
| Cable opening height | 8 mm | 4 – 16 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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