A display that slips over the filament sensor and provides a digital readout of the width in millimeters. This can be used for 3D printers that do not have LCD displays, or if you do not (or can not) interface the sensor directly to the printer.
I also included a new sensor case, with a better light tower design.
- filament width sensor see http://objectswithintelligence.weebly.com/
- 3 wire voltage display (0-30v input), (0-5v supply) from ebay (see picture)
- USB cable - can recycle one with a micro USB that no longer charges
*USB charger - to supply sensor power
- small cable tie
- printed part: LED Panel Voltmeter Case v2.stl
Print out all the .stl files to replace the sensor case with the more streamlined tower design. You will need to attach the tower to the top plate with cyanoacrylates adhesive (superglue) for PLA. Also don't forget to pain the inside of the tower with flat black craft paint.
Construction steps (not wired to printer controller board)
- Cut off the micro connector from the USB cable and strip the end so that 1.5 inches of wire is available.
- Strip the red and black wire so that they can enter the terminal blocks to power the sensor. The other wires are not used.
- Connect the red USB wire and the red wire from the voltmeter display to the senor terminal labeled "+5v"
- Connect the black USB wire and the black wire from the voltmeter display to the sensor terminal labeled "gnd"
- Connect the remaining white wire from the voltmeter display to the sensor terminal labeled "out".
- Press the voltmeter display into the 3D printed part. A friction fit holds the display in place.
- Wrap any wires inside the part around the pillars.
- Test fit the part by sliding it over the sensor case.
- Use a zip tie to hold the USB wire in place - see the picture of the back side.
Print out a new sensor case to take advantage of the new streamlined tower design. Glue the tower to the sensor top plate using Cyanoacrylate adhesive (super glue). Also be sure to paint the inside of the tower with flat black craft paint.