I printed the exterior cage and added a rubber band to the cleats, but it was not tensed this time. When I installed the interior cage, it could bounce and wiggle a bit when I shook it.
I revised the exterior cage to have windows, be shorter, and include a constellation of holes on the bottom where I can add a brass feedback bolt.
I made the rubber band looser this time, and my interior cage bounced around noticeably. When I added a long threaded rod to the bottom, the spinner beads collided forcefully, and I felt and heard a metallic clang when the device pointed north! This was the feedback I was chasing.
REV 8 was about miniaturizing the design. I moved the interior cleats closer to the hub and shrunk the external cage, resulting in feedback as strong as REV7 in a smaller device. However, my rubber band tension still needs improvement.
REV9 updated the interior and exterior cages. The exterior cage moved the feedback hole in the bottom, and the interior cage changed from four thin support arms to two thick ones. I also updated the cleats on both to make it easier to install the rubber bands.
REV9's assembly was the easiest yet because the minimal interior cage no longer encompassed the magnet on four sides. This hindered the functionality, and I need to make more changes.
The rest of the summary posts have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
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| Interior cage can bounce |
I revised the exterior cage to have windows, be shorter, and include a constellation of holes on the bottom where I can add a brass feedback bolt.
 |
| REV7 cage |
I made the rubber band looser this time, and my interior cage bounced around noticeably. When I added a long threaded rod to the bottom, the spinner beads collided forcefully, and I felt and heard a metallic clang when the device pointed north! This was the feedback I was chasing.
 |
| Working feedback! |
REV 8 was about miniaturizing the design. I moved the interior cleats closer to the hub and shrunk the external cage, resulting in feedback as strong as REV7 in a smaller device. However, my rubber band tension still needs improvement.
 |
| REV8: smaller, but touchier |
REV9 updated the interior and exterior cages. The exterior cage moved the feedback hole in the bottom, and the interior cage changed from four thin support arms to two thick ones. I also updated the cleats on both to make it easier to install the rubber bands.
 |
| REV9 models, the smallest yet |
REV9's assembly was the easiest yet because the minimal interior cage no longer encompassed the magnet on four sides. This hindered the functionality, and I need to make more changes.
 |
| REV9 working |
The rest of the summary posts have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
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