IR LED / IR Photodiode Holder

thingiverse

This is an adjustable bracket to hold an IR LED and it's paired IR Photodiode to create a sensor assembly for a reflective optical tachometer. Here's the Instructable on how to create the full tachometer https://www.instructables.com/id/Add-an-Arduino-based-Optical-Tachometer-to-a-CNC-R LED holes are designed to hold a standard 5mm LED/Photodiode. The LED holders have a 1.75mm hole in the back so a piece of filament can be inserted to lock the LEDs into place. The holder was designed to mount to a Sienci Mill CNC Router, so the corner bracket mount is used. I've included a flat mount if anyone can use this for something else. A video snippet of the Optical Tachometer using the IR LED/IR Photodiode holder https://www.youtube.com/watch?v=v_ozoLcYnxE