I do not know exactly where I will want my feedback mechanism, so I designed one that I can easily reposition. The idea is that the unthreaded vertical stub will rest inside the spinner's inner radius and collide with something. The threaded rod will let me position it carefully and reposition it quickly.
I modified the case model to include a mounting hole in the bottom. The feedback mechanism fit, and I positioned the brass stub inside the spinner, but I wanted wider clearance on the side to let me position more freely.
I pivoted to a design with a nut on the bottom positioned along a slot. I would solder a vertical stub to the top of the nut. The new design should allow me to place the stub close to the center and adjust its position carefully.
The new base should have enough room for the incoming hardware. I eyeballed the assembled compass and clearance between the slot and center post is minimal. It turns out that the missing nut socket in the middle was beneficial.
I cut four segments of brass threaded rods and soldered them to four nuts. Each stub is a different length, so I can get a better idea of what I need next.
I installed the metal stubs into the compass, and the third try worked the best. The second-to-longest piece would occasionally stop the spinner and occasionally create the tapping sensation I wanted. The design needs a way to tune the colliding pieces.
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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| Brass and solder |
I modified the case model to include a mounting hole in the bottom. The feedback mechanism fit, and I positioned the brass stub inside the spinner, but I wanted wider clearance on the side to let me position more freely.
 |
| Feedback mechanism sits inside the spinner's inner radius |
I pivoted to a design with a nut on the bottom positioned along a slot. I would solder a vertical stub to the top of the nut. The new design should allow me to place the stub close to the center and adjust its position carefully.
 |
| Slotted base model |
The new base should have enough room for the incoming hardware. I eyeballed the assembled compass and clearance between the slot and center post is minimal. It turns out that the missing nut socket in the middle was beneficial.
 |
| Printed base |
I cut four segments of brass threaded rods and soldered them to four nuts. Each stub is a different length, so I can get a better idea of what I need next.
 |
| Stubs soldered |
I installed the metal stubs into the compass, and the third try worked the best. The second-to-longest piece would occasionally stop the spinner and occasionally create the tapping sensation I wanted. The design needs a way to tune the colliding pieces.
 |
| Stub installed |
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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