This post is not about how to make something cool. This post is about how I tried to make something cool, failed, but I felt the procedure was at least worth posting.
My goal was to modify the NFC PCB business cards so they would not rely on lights, since not everyone wanting to sense fields may want to use their eyes or be able to see.
Enough background
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An assembled NFC sensing business card, a first generation model, was sacrificed for this attempt. The phone in for this lab is a
A small vibrating motor was soldered in parallel to the LED in the hope that when the AC flowed through the circuit, the LED would take half of the wave while allowing full power to flow through the motor when the current flowed the other way. It was not successful.
A series circuit with the motor and a range of capacitor was connected with the hope that even a small capacitor would be sufficient. It was not successful.
A bunch of capacitors were also put in parallel to the motor. It was not successful.
The motor was put in series with the capacitor to try applying a rectified wave. It was not successful.
Lastly, a piezo element was placed across the empty LED pads. I had low hopes since even if there was enough power to actuate the piezo, the frequency would be orders of magnitude too high for a person to hear. It was not successful.
Project page on EasyEDA
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
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 in 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.
2018-07-23
My goal was to modify the NFC PCB business cards so they would not rely on lights, since not everyone wanting to sense fields may want to use their eyes or be able to see.
Enough background
----------
An assembled NFC sensing business card, a first generation model, was sacrificed for this attempt. The phone in for this lab is a
A small vibrating motor was soldered in parallel to the LED in the hope that when the AC flowed through the circuit, the LED would take half of the wave while allowing full power to flow through the motor when the current flowed the other way. It was not successful.
Motor on top of LED
A series circuit with the motor and a range of capacitor was connected with the hope that even a small capacitor would be sufficient. It was not successful.
Capacitor in series with motor
A bunch of capacitors were also put in parallel to the motor. It was not successful.
Capacitor in parallel with motor
The motor was put in series with the capacitor to try applying a rectified wave. It was not successful.
Motor in series with diode
Lastly, a piezo element was placed across the empty LED pads. I had low hopes since even if there was enough power to actuate the piezo, the frequency would be orders of magnitude too high for a person to hear. It was not successful.
Piezo element as sole device
Project page on EasyEDA
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
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 in 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.
2018-07-23
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