Drawback (tem, nikl, jakob)

Potential Names

• Drawback
• Pencil Punk
• HacksyDraw

Requirements

• size for painting a3 paper
• capstan drive
• h bot for movement
• easily to assemble / disassemble
  • removable thread of the capstan drive

Roadmap

Syntax: 1, 2, 1.1
- task 1 and 2 are independent from each other
- task 1.1 can only be executed after task 1

• 1 cad & assemble all parts
• 1.1 print parts (until friday ev)
• 2 power electronics
  • 2.1 user interface (svg to motor control code)
• 3 toolpath planning: svg in -> toolpath out
• 100 make video

availability friday

• matthias 9 bis 14.30, ab 18.00
• niklas 15.00 bis ...
• jakob ab 10.00

next steps

• friday 12.00: all single parts modeled
• friday 15.00: all parts assembled (the other person does driver)

References

• https://github.com/SeanP2001/Urumbu_USB_Stepper_Motor
• cable carriers 3d printable
• urumbu further work
• sampo
• OSAP web framework for talking with usb-driven hardware modules (e.g. motors), shoving everything you would make on pcbs onto the desktop for rapid prototyping. overkill for our project.
• capston drive

Mechanical Design

• TODO insert niclas' sketches

BOM

• 1. v-bearing

Motor Driver

• https://www.digikey.com/en/products/detail/texas-instruments/DRV8428PWPR/13563046
• not in the lab. ordered
• alternative: hbot firmware together with ramps
• we fonud those at the 3d printer in the hackspace: https://www.allegromicro.com/~/media/Files/Datasheets/A4988-Datasheet.ashx
• can you use different stepper drivers in one project?

Toolpaths

• gcode to motor action
• urumbu uses https://github.com/SeanP2001/Urumbu_USB_Stepper_Motor
• if urumbu is used, use sampo stuff: https://gitlab.com/fab-lab-oulu/sampo