Loading...

Hawi Pen

162 views

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Nov 3, 2013

Last week I showed the chain driven system I added to Hawi, which could move up and down, as well as to left and right.
To try and make it useful, I've attached a dry-erase marker to it, with a longer term goal of making it draw something.
Until I get there though, I need a way to apply the marker to apply just the right amount of pressure on the dry-erase board (the desktop tower in video is just a stand-in for the dry-erase board for now)

The marker assembly consists of a spring and two switches. The two switches are not quite at the same level, on purpose, to detect the 3 possible cases:
-the two switches are off: not enough pressure. Move forward.
-only the first switch is on: pressure is just right. Stay there.
-the two switches are on: pressure is too much. Move away.

http://www.robidouille.com
https://www.google.com/+Robidouille

Loading...

When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...