Optical rotary encoder designed to be 3D Printed.
Some things that are required for this project:
1.You will need two 608 skateboard bearings(22mmOD*8mmID*7mmH).
2.You will also need two optical end stop switches (these are very common ,just search "CNC 3D Printer Optical Limit Switch Endstop". Also see link below for amazon page.)
3.You will need some sort of gearbox grease.(Thicker grease will greatly improve the precision of your encoder.)
4.Soldering Iron
You may decide which ratio you would like between the 600CPR(5to1) or 360CPR(3to1).
For 360CPR: Print all files in zip "3to1"
For 600CPR: Print all files in zip "5to1"
First things first print all your parts with recommended settings.
Next you might want to take some time to finish your 3D printed parts (This really impacts how smooth your encoder will operate after assembly.)
You will need to modify the sensors and circuits to fit the Cap:
13.1 De-solder Sensor from Circuit board
13.2 See "SensorCut.jpg" and sand/cut down the CORRECT side !!!
Assembly:
- Press the first bearing into the Housing as far as it will go.
2.Don't put the Carrier into the HousingBearing just yet. For now the bearing will serve as reference.
- Fit the CenterPin into the Carrier (Shortest Pin, should be able to spin freely without side to side play)
4.Fit CarrierPins into Carrier (3pins for "3to1" , 2pins for "5to1". Note this should be a tight fit.)
5.Fit CarrierGears to CarrierPins.
6.Fit SunGearShaft to CenterPin (Make sure it spins with CarrierGears. Good time to add grease)
7.Fit Gearbox onto everything assembled so far and make sure you can turn the carrier at least 2 full rotations.(Add more grease)
8.Fit the last Bearing onto the SunGearShaft as seen in the picture.
9.Fit the WheelSpacer onto the SunGearShaft as seen in the picture.
10.Next you will need to screw the Gearbox into the Housing, making sure to keep all the gears in place. (Don't overtighten the gearbox, it should bottom out and the encoder shaft should rotate freely at this point.)
11.You can now screw the RearBearingBox into the Housing. (This will pre load the entire assembly so make sure it bottoms out and do not overtighten, the encoder shaft should feel smooth with no front to back play at this point.)
12.Fit EncoderVertWheel (BE SURE NOT TO BEND THE PINS)
13.Fit Modified Sensors into Cap(Make sure to follow the orientation in "SensorCut.jpg")
Fit Modified Circuit into Cap and solder up wires as seen in "WireDiagram" (You may now test the encoder)
The CapLid should snap into the Cap after you have verified that the wiring is correct and the encoder is responding.
Screw the Cap into the Housing and you are done.
https://www.amazon.com/HESAI-Printer-Mechanical-Optical-Makerbot/dp/B0719K9Z9R/ref=sr_1_4?dib=eyJ2IjoiMSJ9.M4OQg5Iqs3wU4FLJvmPo6A0Jwc_jfZiuLThrQ850GKS0mOI7JO_swPCS55Ft_gTPynIL3tSTUuo3IbfJzvUVP-lVNHDn7xJkj7IfrAVyxRPBezqp_hiBkx45szEYoYjm93qUrZkngWheXbkXY0jm7_dciUAyNYy3y8f918EtZuLuSotn23bjzuelhpFJME8jsUDTW5MvIhp4dnuIAAWPCoWZu6C6wn22n9zNRKfL9EQ.sUkiYe3DSGnF5h2SfHIpjhgz9bIMvnT5K5MGrnvr6-4&dib_tag=se&keywords=Optical+Endstop&qid=1711975755&sr=8-4