Delta Wiring:MOST
| Michigan Tech's Open Sustainability Technology Lab.
Wanted: Students to make a distributed future with solar-powered open-source 3-D printing and recycling. |
| This page is part of an international project to use RepRap 3-D printing to make OSAT for sustainable development. Learn more.
Research: Open source 3-D printing of OSAT • RecycleBot • LCA of home recycling • Green Distributed Recycling • Ethical Filament • LCA of distributed manufacturing • RepRap LCA Energy and CO2 • Solar-powered RepRaps • solar powered recyclebot • Feasibility hub • Mechanical testing • RepRap printing protocol: MOST• Lessons learned • MOST RepRap Build • MOST Prusa Build • MOST HS RepRap build • RepRap Print Server Make me: Want to build a MOST RepRap? - Start here! • Delta Build Overview:MOST • Athena Build Overview • MOST metal 3-D printer • Humanitarian Crisis Response 3-D Printer |
Materials and Tools
Note
Polarity refers to DC power - one of the conductors is positive (+) one is negative (- 'ground' on the controller board). Steps where polarity is a consideration are noted - pay close attention and make sure that the positive and negative conductors are in the correct locations before applying power to the printer!
Procedure
Controller Power and Jumper Settings
- Braid the extruder drive wires.
- Braid the pairs of limit switch wires.
- Organize the wires from the end effector. Wire tie them to the Bowden sheath at regular intervals.
- Locate the supply power terminals on the controller taking care to identify the polarity of the terminals. The identity of the terminals may be difficult too read - use a magnifying glass if necessary. Clearly mark the POSITIVE terminal with a permanent marker.
- Ensure that the shorting block on the controller power supply selector pins in the middle of the printer controller are set so the left-most pair of pins are shorted (controller powered over USB) as shown in the picture.
- The jumper at the bottom of the board enables autoresetting of the controller, which is required for uploading firmware. Set the jumper over both pins so they are shorted.
Wiring
- Wires can be tucked behind the controller board and secured to the standoffs with wire ties to keep things neat. Secured and well bundled wires are less likely to get entangled.
- Wire the motors as shown in the image, wiring the drive motors to X, Y and Z as marked (note that reversing X and Y will result in mirrored prints). The extruder motor is likewise connected to the controller. If motor leads are colored differently than those shown, motor wire pairs that are connected to the motor poles can be identified by touching pairs of motor wires together and noting if additional force is required to rotate the motor shaft. Wire pairs that increase resistance to rotation should occupy adjacent terminals (e.g. the pairs shown in the picture are red-green and blue-yellow).
- Connect the limit switch conductors to their respective axes e.g. the limit switch above the X-motor is attached to the X-axis limit switch, etc. There is no polarity concern.
- Connect the hot end thermistor to its respective connectors on the controller board. There is no polarity concern.
- Connect the hot end power resistor to its respective connector on the controller board (there is no polarity concern).
- Note markings or conductor colors on the power cable coming from the barrel connector. The POSITIVE conductor is soldered to the largest terminal at the top of the barrel connector (marked in photo).
- Note the color of the 24ga wire soldered to the red (POSITIVE) wire of the end effector cooling fan.
- WARNING: Reversing polarity at this step will likely result in destruction of the controller upon application of power. Locate the POSITIVE supply power terminal on the controller and secure both the POSITIVE conductors from the fan and barrel connector to it. Secure the negative conductors from each in the remaining controller supply power terminal.
Navigation
| Tandem Build MOST Delta Navigation | |
| Green indicate workshop tasks | |
| Printer Primer | |
| Overview | |
| Soldering and tinning | |
| Assembling hot end | |
| Drilling Pilot Holes | |
| Person 1 | Person 2 |
|---|---|
| Tie Rods and Pulleys | Epoxying Magnets |
| Motor End Assembly | Idler End Assembly |
| Extruder Drive | Mount Bases |
| End Effector | Frame |
| Verticals | |
| Wiring | |
| Firmware | |
| Software | |
| Finishing | |
| Printing Basics | |