Saturday, February 28, 2015

2015-02-27 (F) Weekly Summary

The ESPeri.Impass disc shaped designs were finally satisfactory. The fist design was one which relied on a spinner with posts which would rest on the enclosure. The second design put the posts, or spikes, on the inside of the enclosure. Both of these were modeled in OpenSCAD.

Internal view of the divot spinner holder

Internal view of the spike spinner holder

A new project was introduced. This was an abandoned project which was restarted after being largely reworked. The first design relied on high quality prisms to split the view of a camera and retain image quality. This new design uses inexpensive acrylic prisms which are placed directly on a split screen with two camera views. The advantage of this design is that the prisms do not need good image fidelity since they are not transmitting any distance.

The video device chosen was a dashcam which used two cameras and could display the images side by side. The cameras were about the same distance apart as human eyes. Both cameras use identical lenses whereas some dashcams with two cameras have one side with a telescopic lens and the other without.

 Disassembled dashcam

The way the camera attached to a mount was not a standard 1/4-20 camera mount nor was an adapter provided. It was decided to build one using the 3D printer. This adapter could easily be made by buying and cutting a block of plastic or layering sheets of plastic or wood. The basic shape and dimensions were drawn by hand. After thinking on the design it was revised to split the design into three distinct parts. This was also sketched them modeled with OpenSCAD. The parts were not finalized.

 First design of adapter

Refined design of adapter with multiple pieces

Model of multiple pieces




The rest of the weekly summaries have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

Friday, February 27, 2015

x2015-02-14 (Sa) Prismatic Stereoscopic Screen Viewer

The design for a stackable adapter was followed to make drawings of three pieces. The programming was done with as modularity as possible so measurements could be used across all pieces. The first piece, the Base piece, had the most complexity so it was created first. The goal was to have all components of the Base piece rendered properly and modify the subsequent pieces from that file.

 Base piece

When the first piece , the Base piece, seemed complete it was copied. The second copy was modified to replace the support arms with blank space. The third piece was just like the second but without a dais to act as a spacer. This last piece could have been a copy of the second piece to save work but it would have lead to an unnecessary bulge and a base that would be thicker than necessary.

Middle piece 

Top piece

The final file created was a combination of all three renderings. In retrospect there should have been only one file which would render all pieces simultaneously. This would allow for much smoother altering. If the pieces need to be modified this will be done. Mostly likely this will be the case since the long arms on the base are exactly the same size as the gaps in the other pieces. Mostly likely a gap will have to be programmed into the drawings to accommodate the fit.

All three pieces in a single file for exportation

To do:
  • Redesign part for 3D printing
  • Convert all three parts to a single drawing
  • Add a feature to increase the gap surrounding the support arms of the base
  • Print part
  • Test
  • Design part to attach to screen and hold prisms
  • Add lenses to prisms

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-14 (Sa)

Thursday, February 26, 2015

2015-02-25 (W) Prismatic Stereoscopic Screen Viewer

The holes of the first mount design would be prone to collapsing when printed vertically. The wings of the first design would be impossible to print horizontally. The conclusion was to print the mount in three pieces. Those pieces would be assembled by simply stacking them. Glue would be an option but not necessary. Each of the pieces can be printed with no sagging and the final piece will have circular holes printed by drawing circles on top of circles rather than layering from the side.

Three part design

If glue were to be used it would be possible to print three copies of the same piece and glue them together but this would be slightly wasteful. This design is more complex but should form a rigid piece which doesn't need glue or finicky assembly instructions.

To do:
  • Redesign part for 3D printing
  • Print part
  • Test
  • Design part to attach to screen and hold prisms
  • Add lenses to prisms

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-13 (F)

Wednesday, February 25, 2015

2015-02-24 (Tu) Prismatic Stereoscopic Screen Viewer

A simple part was designed to interface with the camera mount. This was a replica of the piece which normally contacts the camera mount but all the dimensions were generated by logical inference. The bottom part of the mount was intended to have a 5mm hole which would be tapped to have threads like those found on a typical (1/4-20) camera mount.

The design was not drawn to scale but measurements shown in green are what will be designed for. One issue may be printing circular holes which could lead to sagging of the print lines. The design should be revised.

Diagram of mount

To do:
  • Redesign part for 3D printing
  • Create To Do list

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-12 (Th)

Tuesday, February 24, 2015

2015-02-23 (M) Prismatic Stereoscopic Screen Viewer

This project is my chance to start sinking my teeth into the possibilities of owning a 3D printer. The option of printing custom pieces rather than trying to buy or build is pretty tempting and allows me to share some pretty neat projects with other people who have 3D printers. I'm excited.

Enough background.
----------

The original Prismatic Stereoscopic Camera Adapter hoped to split a camera's field of view into two different angles with a single camera but finding inexpensive optical quality prisms turned out to be impractical. The four prisms made in that project displayed a good image when used up close but suffered severe distortion when used at any distance. The project ended as a failure.

A new project with the same intention was started but instead of trying to split a single camera feed into two channels, like a smartphone, a battery powered dual camera dashcam was purchased where two camera channels were already placed on a single screen. The same prism array created in the Prismatic Stereoscopic Camera Adapter can be used but will instead redirect the images from the dashcam’s display.

 Fully assembled camera unit

Mounting bracket disassembled

Top mounting bracket, side view. Bracket will be copied

The first step will be to design a system for attaching the dashcam to a wearable head mount. The most sensitive piece will be the mating connector to part of the dashcam’s OEM mount.


The dashcam’s mount was disassembled so measurements could be taken. All measurements taken were in millimeters since the drafting program and 3D printer use millimeters as the default measurement system. A diagram was sketched where the measurements were transcribed so a mating piece can be made.

Top mounting bracket, front view

Bottom bracket. Needs mating piece designed

Dimensions on bottom bracket

To do:

  • Create To Do list


The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-11 (W)

Monday, February 23, 2015

2015-02-22 (Su) ESPeri.Impass

The receptacles drawn previously were left in the program but commented out so they did not render. A new module was created which plugged the holes in the center of the enclosure halves and extended a cone from the plug. The purpose was to provide cones which could pinch a spinner in the center of the compass. The first picture was taken where the cone extends to the middle of the enclosure to demonstrate that the size of the cone can be changed like the second picture shows. The purpose to being able to change the height freely is so that copies can be modified easily as different spinners are introduced.

Maximum cone length

Modified cone length

Outside of enclosure

To do:
  • Design an enclosure with a cone to capture a spinner
  • Design spinner for spheroid compass
  • Design spinner mount for tubular compass
  • Install larger bearing 
  • Cut/bend hanging bracket for spinner
  • Buy spongy material for spinner to land on
  • Test + Evaluate hanging tubular compass
  • Redesign, Rebuild, + Repeat

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-20 (F)

2015-02-21 (Sa) ESPeri.Impass

The conical rests could potentially introduce a lot of friction. This would be caused by the edges of the spinner point rubbing against the cone walls. A sloped surface, like an ellipsoid may be preferable for the spinner rest. The spinner design will involve a magnet with a pin coming off of each side to rest on the enclosure. It may be beneficial to make an enclosure design with a cone coming from either side to hold a magnet spinner.

The first design was a hemispherical nub over the hole in the enclosure. This mass seemed excessive even though the most friction would take place at this point. The second design was a hemispheroid with the same proportions as the enclosure itself and this seemed like a better design.

External view of hemisphere design

External view of  hemispheroid design

Internal view of  hemispheroid design

The final design for a rounded spinner holder was a small sphere with a very small divot. This design may be difficult to get the spinner seated but it should provide a low friction and precise method of holding the spinner in place. The code for the spinner rests was commented out with notation that only one should be selected for the printing.

 External view of the small hemisphere design

Internal view of  hemispheroid design

Code showing code for both spinner rests

To do:
  • Design an enclosure with a cone to capture a spinner
  • Design hemispherical spinner rest
  • Design spinner for spheroid compass
  • Design spinner mount for tubular compass
  • Install larger bearing 
  • Cut/bend hanging bracket for spinner
  • Buy spongy material for spinner to land on
  • Test + Evaluate hanging tubular compass
  • Redesign, Rebuild, + Repeat

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.


This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are 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 claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-02-19 (Th)