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Open Hardware scanning laser rangefinder based on Time-of-Flight principle. No standalone laser rangefinder modules were used in this LIDAR, so its schematic and firmware are fully open.
Its parameters:
- Scanning speed: 15 scans/second
- Resolution: ~ 1% of distance, but not better than ±2 cm
- Minimal distance: 5 cm
- Maximal distance: ~25 m (white surface)
- Angular resolution: 0.5 deg
- Measurements frequency: ~11 kHz
- Scanning angular range: ~230 deg, could be increased by changing mechanics
- Power: 0.15 A at 5V (0.75 W). Start peak current could be bigger than 0.8 A.
- Size: 50x50x120 mm
Price of the components of this LIDAR is ~114$ (without delivery).
See BOM with all calculations: "TotalBOM.xlsx".
This LIDAR is using COTS (Commercial Off-The-Shelf) optical components - standard lenses for surveillance cameras.
There is a big article in Russian about this project: https://habr.com/ru/post/485574/
That is how its components are assembled:
"Reference Plate" is not shown here, but it is necessary for zero calibration in scanning mode.
Structure schematic of this LIDAR:
This repository is still under development.
Video about OpenTOFLidar: https://youtu.be/lTPH_Xa9yCk