The TRRS breakout board came with some header pins, which I pushed through layer "[2](1)" and soldered in place. I pulled off the plastic molding that held them together and trimmed the tops to fit in my frame. I attached 30AWG silicone-coated wires to the sides and ran them through the wireway. I also wired the voltage display and addressable LED bar, which I forgot on the schematic.
TRRS headphone wires
The protoboard with the microcontroller and IO expanders got some wires on the bottom, which would be hidden once I installed the mounting screws. The conductors were color-coded with red as Vcc, black as ground, and blue and yellow for signals. I avoided populating any hole that might be necessary for connecting the keyswitches.
Protoboard wiring
I made the wires from the headphone module and LEDs long enough to reach while the keyboard was open so I would not have to solder them at an awkward angle. I kept the wires on the keyswitches short and tidy. In the layout, I planned to use all the connections from the IO expanders and one from the Arduino, but I crossed those out to connect the rows to the microcontroller and the columns to the IO chips, which meant there were spares everywhere in case something goes wrong.
Finished wiring
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
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
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.
2023-09-20
The protoboard with the microcontroller and IO expanders got some wires on the bottom, which would be hidden once I installed the mounting screws. The conductors were color-coded with red as Vcc, black as ground, and blue and yellow for signals. I avoided populating any hole that might be necessary for connecting the keyswitches.
I made the wires from the headphone module and LEDs long enough to reach while the keyboard was open so I would not have to solder them at an awkward angle. I kept the wires on the keyswitches short and tidy. In the layout, I planned to use all the connections from the IO expanders and one from the Arduino, but I crossed those out to connect the rows to the microcontroller and the columns to the IO chips, which meant there were spares everywhere in case something goes wrong.
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
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
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.
2023-09-20
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