手可摘棉花

Homemade lidar for $100

Overview

Lidar uses the TOF (Time-of-Flight) ranging principle. This type of rangefinder is actively used by the military. They are used in fields such as geodesy, earth remote sensing, industry, and autonomous vehicles. They Being mounted on a drone can be used anywhere long-distance measurements are required.

The performance indicators of this lidar are as follows:

Scanning speed: 15 times per second
Resolution: Approximately 1% of the detection distance, but no better than ±2 cm
Minimum detection distance: 5 cm
Maximum detection distance: Approximately 25 meters (white reflective plane)
Angular resolution: 0.5 degree
scan Frequency: about 11 kHz
Scanning angle range: about 230 degrees, there is room for improvement if the corresponding structure is changed
Power: 5 V/0.1 A (that is, 0.5 watts), the voltage may exceed 0.8A at startup
Dimensions: 50x50x120 mm

Blockdiagram

Design Files

Source code, pcb, etc.

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Update:2025-06-24 22:43:59

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