I made one recently
you need at least 2 IR LEDs seperated by few centimeters distance.
I made mine to plug into the computer usb. if you want more info I will be glad to share the design and the components
regards
you need at least 2 IR LEDs seperated by few centimeters distance.
I made mine to plug into the computer usb. if you want more info I will be glad to share the design and the components
regards
