1. Final Project

This week I worked on defining my final project idea and started to getting used to the documentation process.

This covers the final project ideas.
Electric Motorcycle Conversion Kit

The project ecompases the design and production of the conversion kit for motorcycle which will be used as a mode of transport to reduce traffic jame and preserving the climate, as it will reduce the carbon footprint from fuel-powered cars.

Unique Features

A unique feature includes a custom twist throttle with Hall-effect sensor for precise torque control (0-100%), activated by the rider via a smooth twist mechanism. Built from 3D-printed PLA, aluminum, and electronic components, the module balances durability, lightweight design, and a sleek, functional aesthetic.

Construction & Design

Frame: 3D-printed PLA enclosure for the throttle grip and OLED display, providing a lightweight yet robust structure for handlebar mounting.

Throttle Surface: Made from PLA with an aluminum spring mount for smooth operation and reliable return-to-zero functionality.

Display Mounting: Secure handlebar clamp (22mm diameter) with M3 screws, ensuring stability and visibility across riding conditions.

Power & Control

Power: USB-powered for prototyping (5V), with integration to a 72V-to-5V DC-DC converter for the full kit, ensuring sufficient runtime for extended rides.

Throttle System: Hall-effect sensor (SS49E) and ESP32 ADC (GPIO36) ensure precise throttle control with exponential mapping for smooth response.

Interface: Controlled via a push button (GPIO21) for ECO/SPORT mode switching; the 2.8” SSD1306 OLED (I2C, GPIO4/5) displays throttle percentage, mode, SoC, and faults.

Technology & Safety

Monitoring: Bluetooth connectivity (SerialBT, “EV_Throttle”) enables real-time data tracking (throttle, mode, SoC, faults) via a smartphone app.

Fault Detection: ESP32-based fault detection identifies throttle signal errors and low SoC (10%), indicated by a red status LED (GPIO22).

Electronics: All components are housed in a custom 3D-printed enclosure, or a custom built container to protect against vibration, dust, and minor impacts during rides.

Safety Features: Includes throttle deadband (5%) to prevent jitter, exponential mapping for smooth acceleration, and fault-triggered torque cutoff for rider safety.

Final Components List
Components Purpose
Seed XIAO (ESP32 or RP2040) Main controller
Color Sensor Vision for table navigation
Keypad Enter multiple table numbers
I2C LCD (16x2) Display queue & instructions
Ultrasonic Sensor Obstacle avoidance
L298N Motor control
2 DC Motors Drive system
Battery Power supply

Gallery
Food Delivery Tray

Video will be available