I decided to incorporate a living-hinge top and bottom. I drafted several patterns in CAD, but the snake pattern provided flexibility and strength to hold the central bolts and keep the spinner moving without rattling.
Elastic top and bottom
I designed a flexible mount to bounce a brass screw, which I intended to position so it could tap on the spinner whenever the enclosure faced north. I botched the design because it was too large, but it may still have merit.
Suspended machine screw
I successfully made a haptic compass. I drafted a flexible mount to suspend a screw over the exposed magnets, so whenever the device pointed north, I could faintly feel the two metal pieces colliding. I want a stronger sense of feedback, but I have proven the feasibility.
First functioning haptic compass
I improved the feedback by dangling a brass washer over the spinner. The impact feedback was more noticeable, and responded even if the spinner was not moving. The drawback was that the brass nuts and bolt suspending it added a lot of noise. To prevent feedback when facing south, I offset the spinner magnets so the south-facing side is lower.
Brass washer tapping an offset spinner
I am calling this prototype finished. I plan to do more, like miniaturize, but I will wait. My last test was to replace the spinner's rectangular magnets with circular ones so the washer could ride over it easily, but it reduced the feedback.
Working haptic compass
I consolidated the files someone would need to copy this project and uploaded them to GitHub. I took pictures of a case and spinner, then added labels to make demonstrations easier.
Case with labels
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
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.
I designed a flexible mount to bounce a brass screw, which I intended to position so it could tap on the spinner whenever the enclosure faced north. I botched the design because it was too large, but it may still have merit.
I successfully made a haptic compass. I drafted a flexible mount to suspend a screw over the exposed magnets, so whenever the device pointed north, I could faintly feel the two metal pieces colliding. I want a stronger sense of feedback, but I have proven the feasibility.
I improved the feedback by dangling a brass washer over the spinner. The impact feedback was more noticeable, and responded even if the spinner was not moving. The drawback was that the brass nuts and bolt suspending it added a lot of noise. To prevent feedback when facing south, I offset the spinner magnets so the south-facing side is lower.
I am calling this prototype finished. I plan to do more, like miniaturize, but I will wait. My last test was to replace the spinner's rectangular magnets with circular ones so the washer could ride over it easily, but it reduced the feedback.
I consolidated the files someone would need to copy this project and uploaded them to GitHub. I took pictures of a case and spinner, then added labels to make demonstrations easier.
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
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.
Comments
Post a Comment