The second set of plastic prints were correctly sized and fit onto the aluminum bar snugly. When I slid the plastic sheet through, some of the broader spots snagged and marred the edges, but this shouldn't affect the instrument.
After I connected one strip and power, there was no effect on the sound, which was distressing because it worked the last time I had ordinary potentiometers connected to the synthesizer. I traced out the solder joints and found a short between the variable resistor input and the positive voltage on the second timer chip. I removed a couple of wires without disturbing anything, but the problem remained, so I replaced the timer. Sure enough, when I took a meter to the input and voltage pins of the scrapped chip, there was unwanted continuity. After that, the ribbon allowed me to change the sound, so I started the second set of prints for the other potentiometer.
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
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.
2020-05-12
After I connected one strip and power, there was no effect on the sound, which was distressing because it worked the last time I had ordinary potentiometers connected to the synthesizer. I traced out the solder joints and found a short between the variable resistor input and the positive voltage on the second timer chip. I removed a couple of wires without disturbing anything, but the problem remained, so I replaced the timer. Sure enough, when I took a meter to the input and voltage pins of the scrapped chip, there was unwanted continuity. After that, the ribbon allowed me to change the sound, so I started the second set of prints for the other potentiometer.
Conductive ribbon spread by printed parts
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
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.
2020-05-12
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