The APC I built yesterday didn't sound right, and my DIP 555 timers arrived, so I decided to make one on a solderless breadboard. The only differences in the parts were the resistor and chips.
My stock of 9V connectors ran out, so I substituted a step-up voltage module and powered it from a USB battery pack. While I was soldering, I added prototyping wires to the potentiometers.
Despite the slow-downs, I made a working console, and it sounded the way I would expect. For output, I selected a piezo element, and if I rested a plastic tube over it, the recorder's microphone had no trouble picking it up. I had logarithmic potentiometers, so their frequency change is exponential, but our ears expect that kind of alteration, and it may be a good thing.
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.
2020-05-04
Insertion-mount parts
My stock of 9V connectors ran out, so I substituted a step-up voltage module and powered it from a USB battery pack. While I was soldering, I added prototyping wires to the potentiometers.
Power supply and prototyping potentiometers
Despite the slow-downs, I made a working console, and it sounded the way I would expect. For output, I selected a piezo element, and if I rested a plastic tube over it, the recorder's microphone had no trouble picking it up. I had logarithmic potentiometers, so their frequency change is exponential, but our ears expect that kind of alteration, and it may be a good thing.
(0:40) Functioning APC
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.
2020-05-04
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