Keycaps and keyswitches were installed onto the PCBs. The lettered keys would be assigned to type letters when pressed, just like any keyboard. The blank gray switches would be assigned modifier keys like, Ctrl, Alt, GUI (Windows key or Command), and Shift. Caps-lock and spacebar would also be assigned in the appropriate locations.
Code was written to recognize when a button was pressed or released and report that through the serial port. Previously, the serial port would give constant feedback for every single button which might exist on the system. This was a powerful tool for debugging but unsuitable for anything else. The ability to differentiate between pressed and released buttons on the IO expander chips will be important.
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
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.
2018-03-31
Keycaps arranged to make this suitable for typing
Code was written to recognize when a button was pressed or released and report that through the serial port. Previously, the serial port would give constant feedback for every single button which might exist on the system. This was a powerful tool for debugging but unsuitable for anything else. The ability to differentiate between pressed and released buttons on the IO expander chips will be important.
Recognizing input changes
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
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.
2018-03-31
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