MakerHawk 6pcs Optical Endstop With 1M Cable Switch Sensor Photoelectric Light Control Limit Switch Module for 3D Printer

I bought these for a CNC Router Homing enhancement. They work perfectly. I have been running my new homable router for two weeks now. Well made and very repeatble action.

Worked absolutely as expected, though the filament has to be further down in the sensor gap than first expected. I didn't have any detection of an obstruction except for the last 1mm of space, so it was a little finnicky during initial testing but once I found the sweet spot it was perfect. Easily connected to a Raspberry Pi 4 with 5v, ground, and a GPIO pin. Could also easily run on 3.3v but I was using a straight 3-pint connector and wanted to use pins 4, 6, and 8 directly. Didn't appear to have any issues with this detecting PLA, which some optical sensors I've tested previously fail to detect.

Worked with no issues

I'm still using the same endstop on my z. No issues even with dust and what not.

Bought these for use with a solar panel sun tracker as motion endstops. Testing went perfect indoors, then failed to register the endstop when used outside. Terrible crunchy fail.!! Will have to change to mech switch.

Fantastic little switches. I use them on my DIY 3D printers. Cool part is that 3D model is available on printables so it is easy to integrate on your own printer.

Got these for my Elegoo Neptune 3D printers, simple pin switch on the cable and these plug right in and work flawlessly. Removes friction allowing me to crank up the flow. The printed cases I put these in help block light leakage, increasing the different types and colors of filaments these pick up.

I used two optical sensor to replace a single GL-8H proximity sensor, along with a TMC2208 for driving Z2. 3D printer is a Fokoos Odin 5 F3. Settings were changed in LCD, to enable Z2, ZMAX endstop as Z2MIN, and endstop triggers open. Cable wiring was modified at one end, by swapping pins 1 and 3 on each sensor. Trigger indicator LEDs were used to set Z initial height to paper thickness, with printer powered on but not homed. Care was taken to insure bed was parallel to X gantry. First Z home was perfect. Very pleased how easy it was to mount switches by making a model for 20mm extrusion mount. The optical sensor is only 11mm high vs 30mm for GL-8H. It was not possible to mount a GL-8H on left side due to, so optical switch made my upgrade possible. I plan to purchase additional optical sensors to replace micro switches on more printers.

This had the potential to be a great product, but they really dropped the ball on quality control. A few of the pieces had loose connectors. Meaning that sometimes the signal would randomly cut in and out. If you jiggle the cable a bit, sometimes it will make contact and sometimes it will disconnect. I had to desolder the connectors and solder the signal wires directly to the PCB. A sensor like this needs to be 100% reliable. 50% reliability is simply unacceptable. The manufacturer should spend an extra few cents on good quality connectors and cables.