The Parallax 28044 is a laser range finder module that uses laser technology to calculate the distance to a targeted object.

The design uses a Propeller processor, CMOS camera, and laser diode to create a low-cost laser range finder. Distance to a targeted object is calculated by optical triangulation using simple trigonometry between the centroid of laser light, camera, and object.

Features:

• Compact module with integrated CMOS camera and laser system
• Optimal measurement range of 6–48 inches (15–122 cm) with an accuracy error <5%, average 3%
• Maximum object detection distance of ~8 feet (2.4 meters)
• Range finding sample rate of 1Hz
• Single row, 4-pin, 0.1” header for easy connection to a host system

Application Ideas:

• Distance or liquid level measurements
• Object detection and/or avoidance
• Item counting

Key Specifications:

Power requirements:

• 5 VDC @ 150 mA
• Communication: Asynchronous serial; 300–115,200 baud with automatic baud rate detection
• Operating temperature: +32 to 122 °F (0 to +50 °C)

Dimensions:

• 3.95 x 1.55 x 0.67 in (10.05 x 3.95 x 1.7 cm)

Parallax Laser Range Finder (#28044)

 Schematic design 28044

Firmware for Propeller processor

Bill-of-Materials for 28044

PCB Layout/Gerber Plots

Mechanical Drawing of 28044

Example Code for BASIC Stamp 2

Example Code for Propeller