The cat seems way more distracted by the buzz of the servo motor than entertained by the laser.For safety reason I would like to replace laser LED with standard LED with low radiation angle. What LED would you recommend?
See "Easy Arduino Cat laser Toy Project | NO Soldering DIY"
It looks great with 4° only. Any advice where to buy focusing lens for it?You can get 5mm LEDs down to beam angles as low as 4 degrees. Vishay VLCS5830 is an example, rated at up to 65,000mcd at 50mA. Bear in mind that LED beam angles are the angle where intensity drops to 50% of on-axis intensity, so there is beam spill outside of that angle. You will probably still need a lens or deep reflector to tighten up the beam a bit more if you want a small dot at any reasonable distance.
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by Jake Hertz
by Don Wilcher