EDA improvements were started with the controller board. The first step was to change the legend from "REV 0.03" to "REV 0.04" and save it in a new file. The footprint for the four-position headers was changed to remove the silkscreen border. The SDA and SCL data lines were brought to both sides of the board, and the Teensy's secondary I2C line was given pullup resistors but not routed anywhere.
All the labels on the edge pins were replaced with single-character symbols and a legend was placed on the top and bottom of the board. For cosmetic reasons, it may be taken off the top of the board before ordering. Vcc is represented by a plus symbol (+) since it'll be positive. The GND is represented by a slashed zero (Ø) so it won't be confused. SDA is simply a dot (•), and SCL is a capital L (L). A new font had to be added into EasyEDA to type the dot and slashed zero. A free sans-serif font was downloaded. Anything should work. It was also necessary to increase the size of the text to make it legible. Even if these symbols are low-resolution, they should be easy to tell apart.
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
Disclaimer for http://24hourengineer.blogspot.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, 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.
2018-05-07
Rev 0.03 and Rev 0.04 of the controller board
All the labels on the edge pins were replaced with single-character symbols and a legend was placed on the top and bottom of the board. For cosmetic reasons, it may be taken off the top of the board before ordering. Vcc is represented by a plus symbol (+) since it'll be positive. The GND is represented by a slashed zero (Ø) so it won't be confused. SDA is simply a dot (•), and SCL is a capital L (L). A new font had to be added into EasyEDA to type the dot and slashed zero. A free sans-serif font was downloaded. Anything should work. It was also necessary to increase the size of the text to make it legible. Even if these symbols are low-resolution, they should be easy to tell apart.
Revised symbols for the connectors
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
Disclaimer for http://24hourengineer.blogspot.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, 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.
2018-05-07
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