I wired the switches and lights in the first octave, but I still need to terminate them on the microcontroller board. I had to learn a lot about positioning the wires and cutting them to the correct length. Next time, I will be better prepared, and I hope to finish the other two octaves.
I wired the pushbuttons, LEDs, and GND wires to the IO expander board. The power and data coming from the microcontroller board were unruly, so I decided to tame them by making them pluggable. I added header sockets below the IO expander boards, but they did not align with the PCB grid, so I had to bend pairs of pins to fit.
I added the GND wires for the switches and LEDs. Each key has a ground wire that runs to its neighbors and the pushbutton. The other side of the button went to the LED, which required a short wire routed through a snug channel I modeled into the base.
I stalled out on this project. The remaining work felt like it was growing faster than shrinking, and I was deeply discouraged. To fight off the feelings, I listed all the remaining tasks as things I can complete in a day or less, and the project felt hopeful again.
The list was a comfort and made it easier to resume working. I jumped back in by tackling the input wires on the second octave. I added long wires to the pushbuttons and assumed I would trim them when I soldered them to the IO expander board, but they were a comfortable length, which was a welcome surprise after the last octave, which had inconveniently short wires.
Kevin from Kevisyde Studios joined us to tear apart Return to Silent Hill. We did not even bother to talk about what we liked in the movie, and spent time telling people to avoid the previous movie even more than the third.
The rest of the summary posts 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
Completed projects from year 11
Completed projects from year 12
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.
 |
| Switches and lights installed |
I wired the pushbuttons, LEDs, and GND wires to the IO expander board. The power and data coming from the microcontroller board were unruly, so I decided to tame them by making them pluggable. I added header sockets below the IO expander boards, but they did not align with the PCB grid, so I had to bend pairs of pins to fit.
 |
| Wired underside and offset pins |
I added the GND wires for the switches and LEDs. Each key has a ground wire that runs to its neighbors and the pushbutton. The other side of the button went to the LED, which required a short wire routed through a snug channel I modeled into the base.
 |
| GND wires installed on each operator |
I stalled out on this project. The remaining work felt like it was growing faster than shrinking, and I was deeply discouraged. To fight off the feelings, I listed all the remaining tasks as things I can complete in a day or less, and the project felt hopeful again.
 |
| Assessing what needs to be done |
The list was a comfort and made it easier to resume working. I jumped back in by tackling the input wires on the second octave. I added long wires to the pushbuttons and assumed I would trim them when I soldered them to the IO expander board, but they were a comfortable length, which was a welcome surprise after the last octave, which had inconveniently short wires.
 |
| 12 inputs wired to the IO expander board on octave 2 |
Kevin from Kevisyde Studios joined us to tear apart Return to Silent Hill. We did not even bother to talk about what we liked in the movie, and spent time telling people to avoid the previous movie even more than the third.
Critical Affection: Return to Silent Hill (1:47)
The rest of the summary posts 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
Completed projects from year 11
Completed projects from year 12
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.
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