DrawBot – Drawing Success(ish)!!!

Starry Night by Van Gogh, drawn by a freakin’ narcoleptic robot

Starry Night by Van Gogh, drawn by a freakin’ narcoleptic robot

I think that turned out rather well!!!  If you look closely at the area circled in red in the next picture, you’ll see where there is a discontinuity in the line.  You may have to look at the large version to really see where this happens.

Starry Night by Van Gogh, drawn by a freakin’ narcoleptic robot, with the error circled

Starry Night by Van Gogh, drawn by a freakin’ narcoleptic robot, with the error circled

I suspect that my attempt to fix the stalled drawing probably did not have a role to play in the robot drawing off the top edge of the paper.  I think that is my fault for badly centering the paper on the robot.  Let’s see it again, without the red circle, with the original image overlaid.

Starry Night by Van Gogh, drawn by a freakin’ robot with narcolepsy, overlaid the subject image

Starry Night by Van Gogh, drawn by a freakin’ robot with narcolepsy, overlaid the subject image

There is clearly some calibration and whatnot to be done, but I’m still amazingly pleased with the results.  As much as I’ve blogged about drawing robots, the entire process from assembling parts ordered online to having a machine that actually draws stuff has been amazingly painless.  Based on the image above, it looks like I need to:

  • Adjust the aspect ratio, so that the image isn’t made too wide by the drawing process.  I suspect this has something to do with the “Setup->Machine Width” setting.  That was the setting that caused the drawing to be unnaturally narrow.
  • Adjust the amount of line that is unspooled in the center of the drawing.  I suspect this has something to do with the “Setup->MM per Rev” setting.  I have nothing upon which to base this suspicion except that my feeling is the robot is spooling out too little line.  I suspect that if I tell it that the spool is slightly smaller (closer to 47 than the 50 I’m using now) I would end up with a better result.
Posts in the DrawBot Adventure Series
  1. Wanna make a DrawBot?
  2. DrawBot Resources and Links
  3. DrawBot, the Adventure Begins
  4. DrawBots for the slow learner
  5. DrawBot - Parts Ordered!!!
  6. DrawBot - What would you draw?
  7. DrawBot - The Plan!
  8. DrawBot - The Hacks
  9. DrawBot - The Delivery?
  10. DrawBot - The Delivery, Part II
  11. DrawBot – The Delivery, Part III
  12. DrawBot – The Assembly, Part I
  13. DrawBot – The Software, Part I (and an existential conversation)
  14. DrawBot – The Delivery, Part IV
  15. DrawBot – The Assembly, Part II
  16. DrawBot – The Assembly, Part III
  17. DrawBot – The Assembly, Part IV
  18. DrawBot – Design Considerations
  19. DrawBot – Halp!!! No - seriously, a little help?
  20. DrawBot – The Face Palm
  21. DrawBot – The Delivery, Part V
  22. DrawBot – The Silver Lining of Failure
  23. DrawBot – The Delivery, Part VI
  24. DrawBot – The Assembly, Part V
  25. DrawBot – The Assembly, Part VI
  26. DrawBot – Printed Parts
  27. DrawBot – The Assembly, Part VII
  28. DrawBot – Printing!
  29. DrawBot – Printing, Part II
  30. DrawBot – Calibration
  31. DrawBot – Pen Selection
  32. DrawBot – How to Recover from a Stalled Print!
  33. DrawBot – Drawing Success(ish)!!!
  34. DrawBot – Pen Selection, Part II
  35. DrawBot – Onwards and Upwards!
  36. DrawBot – Another Successful(ish) Drawing!, and an Update
  37. Restarting a Stalled DrawBot Drawing
  38. TSP FTW!
  39. Speedier DrawBot Drawings
  40. Two new DrawBot links! And an update!
  41. Excellent DrawBot Slides
  42. Another Drawing Robot!!!
  43. DrawBot Practice Tip: A Watched Pot
  44. The biggest inkjet printer ever
  45. Why do DrawBots draw on walls?
  46. Maze Code + Polargraph?
  47. All New Polargraph on the way!!!
  48. Ideas for improving my DrawBot
  49. DrawBot Aesthetic Re-Design Ideas
  50. The Eagle Has Landed
  51. This project is not going to overengineer itself
  52. Overengineered Stepper Motor Mounts, Filament Guides
  53. Overengineered Bolt Endcaps, Case Holder
  54. Sourcing DrawBot Parts
  55. DrawBot - A Tour!
  56. DrawBot - A Preview
  57. Arduino Powered Drawing Robot Poll
  58. Building an Arduino Drawing Robot - On The Cheap
  59. DrawBot - Printed Parts Tour
  60. Unidentified Foam Object
  61. Arduino Powered Drawing Robot - Take 2 (Or 3)
  62. DrawBot, now ACTUALLY wall mounted!
  63. A Study of Drawing Robot Pen Holders and Design Considerations
  64. Drawing Robot Pen Holders, Calligraphy Pens, and Thought Experiments
  65. Ideal Qualities in a Drawing Robot Pen Holder
  66. Enough talk! Finally a pen holder!
  67. DrawBot Pen Holder Post Mortem
  68. To Maker Faire!!!
  69. Skipping! How could I forget the skipping?!
  70. Drawing Robot Penmanship
  71. PlotterBot at Maker Faire Bay Area 2013!
  72. PlotterBot.com - a new site dedicated to drawing robots

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