Two boards were made yesterday so components were prepared for assembly. Previously, when a single screw terminal was necessary, the scrap half of a double-terminal was cut away roughly and discarded. This left a jagged edge and destroyed one of the terminals. These were not expensive components but it was wasteful. A razor saw was used to cut some of the screw terminals in half to make singles.
Two boards were assembled completely. After the past failures, it seemed prudent to assemble two boards immediately to check for errors and hope for one board without problems.
Both boards tested perfectly! All the inputs and outputs and transistor circuits worked flawlessly without any repairs needed on the circuit boards. The picture below shows all three outputs simultaneously active but this was possible with a photo burst to capture the center light which represents the infrared emitter which flickers momentarily.
The socket for the accelerometer was soldered to the bottom of the test board. This test board only had copper on one face of the board while most boards produced in a fabrication site will have vias (holes through the board) with metal on both sides and lining the hole. This would have made it easier to solder the board in place. Instead, the pins were bent 90° and soldered to the surface of the board.
The board, along with the accelerometer, was fit into the tagger pipe. Everything fit easily and had sufficient clearance. It may even become necessary to some kind of 3d printed fixture to hold the board in place.
Downloads:
The rest of the posts for this project have been arranged by date
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
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 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 property or assets based on a post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2017-05-27 (Sa)
Razor saw and screw terminals
Halved screw terminals
Two boards were assembled completely. After the past failures, it seemed prudent to assemble two boards immediately to check for errors and hope for one board without problems.
Two assembled boards
Both boards tested perfectly! All the inputs and outputs and transistor circuits worked flawlessly without any repairs needed on the circuit boards. The picture below shows all three outputs simultaneously active but this was possible with a photo burst to capture the center light which represents the infrared emitter which flickers momentarily.
Extensive board testing
The socket for the accelerometer was soldered to the bottom of the test board. This test board only had copper on one face of the board while most boards produced in a fabrication site will have vias (holes through the board) with metal on both sides and lining the hole. This would have made it easier to solder the board in place. Instead, the pins were bent 90° and soldered to the surface of the board.
Socket soldered to underside
The board, along with the accelerometer, was fit into the tagger pipe. Everything fit easily and had sufficient clearance. It may even become necessary to some kind of 3d printed fixture to hold the board in place.
Board and accelerometer inside the pipe
Downloads:
- Arduino firmware
- OpenSCAD code
- STL printable models
- STL printable pipe dividers
- Python Last-Man-Standing program
- Easy EDA
The rest of the posts for this project have been arranged by date
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
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 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 property or assets based on a post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2017-05-27 (Sa)
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