Laser diode low-profile alignment module
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Low-profile laser diode holder. Under 1/2" thick. Allows fine-tuned alignment of cheap laser diodes.
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- Creative Commons — Attribution — Noncommercial — Share Alike
I use 5V 650nm laser diodes, pointed at light sensors, as finish-line timers in my pinewood derby track. These modules hold the diode and help me fine-tune the beam to point directly at the light sensor.
They're designed to fit in 2 layers of ¼" MDF. The base should be exactly ¼" tall itself, and fit almost perfectly within a 1.75" diameter hole (it'll be too tight - fine tune with a round file). The collet will protrude from the first layer of ¼" MDF, so the second layer will need a triangular opening cut - use the provided models as cut guides.
The diodes: https://smile.amazon.com/gp/product/B071FT9HSV
The light sensors: https://smile.amazon.com/gp/product/B07MYY1ZZH
Each module requires:
1x M2 screw, 5-6mm, to hold the diode in place.
3x M2 hex screws, used to adjust the position of the triangular collet
3x M2 nuts, captured in the arms of the triangular collet
Category: Electronics