DrawBot – The Hacks

Sandy Noble's modifications to Adafruit's Motor Shield

Sandy Noble's modifications to Adafruit's Motor Shield

Chatting with Sandy Noble over at the Polargraph website has been extremely helpful1  It looks like he’s added three changes to the Adafruit Motor Shield:

  • Heatsink added23
  • Breakout boards to connect the terminals to the clips for the motor leads.  However, it looks like there’s a small little component of a circular purple variety also on that board.
  • Extra pins for hooking up a cooling fan.  Sandy says he doesn’t use them any more, but it really wouldn’t be a bad idea given that it would take hours for even a simple print.

”Posts
  1. Wanna make a DrawBot?
  2. DrawBot Resources and Links
  3. DrawBot, the Adventure Begins
  4. DrawBot - Parts Ordered!!!
  5. DrawBot - What would you draw?
  6. DrawBot - The Hacks
  7. DrawBot - Giant Unicorn?
  8. DrawBot - The Delivery?
  9. DrawBot – The Software, Part I (and an existential conversation)
  10. DrawBot – The Delivery, Part IV
  11. DrawBot – The Assembly, Part III
  12. DrawBot – The Assembly, Part IV
  13. DrawBot – The Delivery, Part V
  14. i find i want to add more posts in some random series, just so i can use my new plugin
  15. My first published WordPress plugin! Simple Series!
  16. This is a test of the Simple Series post system... This is only a test
  17. Now Simple Series will also add the series list to RSS feeds too!
  18. ZOMG! Simple Series is going viral!
  19. DrawBot – The Assembly, Part VII
  20. DrawBot – The Operation, Part I
  21. DrawBot – The Assembly, Part VIII
  22. DrawBot – The Breakdown, Part II
  23. DrawBot – Printing!
  24. DrawBot – Why are you crying?
  25. DrawBot – Calibration
  26. DrawBot – Pen Selection
  27. DrawBot – Onwards and Upwards!
  28. DrawBot – Another Successful(ish) Drawing!, and an Update
  29. Plugin Considerations
  30. WordPress Plugin: Easy CC License
  31. TSP FTW!
  32. Excellent DrawBot Slides
  33. DrawBot Practice Tip: A Watched Pot
  34. All New Polargraph on the way!!!
  35. Every Body Needs a Skull
  36. I think I know what I want to draw next...
  37. Overengineered Spools
  38. Overengineered Bolt Endcaps, Case Holder
  39. DrawBot - A Tour!
  40. DrawBot - A Preview
  41. Arduino Powered Drawing Robot Poll
  42. Building an Arduino Drawing Robot - On The Cheap
  43. Unidentified Foam Object
  44. Arduino Powered Drawing Robot - Take 2 (Or 3)
  45. DrawBot, now ACTUALLY wall mounted!
  46. How to add a custom button to the WordPress Visual TinyMCE Editor
  47. A Study of Drawing Robot Pen Holders and Design Considerations
  48. Drawing Robot Pen Holders, Calligraphy Pens, and Thought Experiments
  49. Ideal Qualities in a Drawing Robot Pen Holder

  1. The photo is from Sandy Noble’s photo stream.  It says All Rights Reserved and I will happily take it down if he asks and says this is not a fair use.  Given that all of his stuff has been very open source, I’m guessing this was just a default setting. []
  2. To the H-Bridges? []
  3. Also…  Where does one get a heatsink?  How do you attach it? []

7 Responses to “DrawBot – The Hacks”

  1. kongorilla says:

    I live near Jameco, so you’ll find 2 of these on my motor shield:

    http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2077335_-1

    You’re supposed to use heat sink adhesive (google it) to attach them. I believe I used super glue, though. I assume the thermal dissipation isn’t as good, but I’ve been fine (so far).

    I should mention that since I’m using low voltage motors that suck up current like crazy, I also piggybacked L293Ds, so my shield has four of them (2 pairs, that is, one heat-sink per pair). “Piggybacking” is described on this page:

    http://www.ladyada.net/make/mshield/use.html

  2. cyrozap says:

    Look for “ram chip heat sinks” like this (http://www.amazon.com/Xbox-Heatsinks-HANA-Southbridge-Chips/dp/B003WGLSNW) that have the sticky thermal pad attached.

  3. MakerBlock says:

    @Cyrozap: Awesome! Thank you for the link!

  4. MakerBlock says:

    @kongorilla: Sooo… you seriously just drop another H-bridge on top of another H-bridge and solder them together?? Could you post a picture of what yours looks like?

  5. Cameron says:

    I’m pretty sure the “small little component of a circular purple variety” is just a jumper wire, since the screw terminals don’t have the same spacing as the header pins.

  6. MakerBlock says:

    @Cameron: Ha! I think you’re right!

  7. […] Optional:  Hack the Adafruit Motor Shield […]

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>