diyLIDAR
DIY LIDAR sensor based on spare sensors
Bill of Materials:
| S/N | Part | Qty | Function |
|---|---|---|---|
| 1 | VL53L0X TOF Sensor (Adafruit) | 2 | Fairly accurate, fast distance sensor |
| 2 | Random DC Motor | 1 | Motor for driving the LIDAR. |
| 3 | DRV8833 Motor Driver Breakout | 1 | Stepper Motor Driver |
| 4 | TCRT5000 IR sensor | 2 | Negative feedback/crude motor encoder |
| 5 | Arduino Nano | 1 | Microcontroller |
Function:
The whole idea is to emulate something like a RPLidar: using an Arduino Nano as an intermediate microcontroller. Screenshots will be added if the project continues on.
The motor is a small DC motor controlled by a DRV8833 driver board. The 2 distance sensors are Adafruit VL53L0X sensors controlled using Pololu's library (to save memory space on the Arduino).
Arduino-side software:
Library dependencies are:
TODO Add links to other GitHub repos Additionally, we use a pair of TCRT-5000 IR sensor to provide feedback on disc rotation, wired to an external interrupt.
Todo-list:
Hardware
- Modify model: better LS mount, USB clearance, roof space for slotting TOF sensors
- More secure friction-fit for motor-side pulley (consider better drive ratio)
- Redesign model (PCB)
Software
- Interrupt handler for both light sensors
- (for JQ) standardise packet format