The PCB motors did not work as well as I had hoped, and when the group discussed it, people were disappointed and suggested other badge options. The deadline was approaching, so I thought about simple variations and returned to the original model with a cheap gear motor.
The two problems with that design were integrating a speed controller and mounting the motor. Many people would not mind installing the motor and soldering a couple of wires if they could save a few dollars by buying it as a kit. I wanted to try something unusual for the speed controller with a series of diodes and switches to control how many the circuit used.
Standard silicon diodes drop 0.7 volts each, so by running the power through five of them, the load will see 3.5 volts less than the supply provides. I used four AA batteries in the circuit, so depending on where the user taps into the circuit, they can choose 2.5 to 6.0 volts. I chose easyeda.com, which I have used in the past with good results, but they are not sponsoring this project.
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.
2024-02-12
The two problems with that design were integrating a speed controller and mounting the motor. Many people would not mind installing the motor and soldering a couple of wires if they could save a few dollars by buying it as a kit. I wanted to try something unusual for the speed controller with a series of diodes and switches to control how many the circuit used.
.png) |
| Super simple spinner circuit |
Standard silicon diodes drop 0.7 volts each, so by running the power through five of them, the load will see 3.5 volts less than the supply provides. I used four AA batteries in the circuit, so depending on where the user taps into the circuit, they can choose 2.5 to 6.0 volts. I chose easyeda.com, which I have used in the past with good results, but they are not sponsoring this project.
.png) |
| Unadorned component layout |
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.
2024-02-12
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