https://forum.arduino.cc/t/alternate-range-sensor/7670
alternate range sensor ? - Exhibition - Arduino Forum
Oct 10, 2009 - Hi, I wanted to know if there was alternatives to IR and Ultrasound range sensors. I thought of: autofocus elements (founds in some cameras) laser beam sensors...
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https://brightnew.en.made-in-china.com/product/vdATknebHLWt/China-LED-Torch-Long-Range-Rechargeable-Alternate-Light-Hand-Lamp-Outdoor-Flashlight.html
LED Torch Long Range Rechargeable Alternate Light Hand Lamp Outdoor Flashlight - Rechargeable...
LED Torch Long Range Rechargeable Alternate Light Hand Lamp Outdoor Flashlight, Find Details and Price about Rechargeable Flashlight Outdoor Flashlight from...
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