The electronic business cards were revised with an experimental design. The LED locations were given holes so the LEDs could sit flush with the back of the board. Solder pads had to be added to the backside of the board for this test.
Two boards were tested with this change. One used NFC for power and one used a battery. Inserting the LEDs was difficult since they were snug but it also made it possible to hold the LED in place with friction while soldering. Placing them in the sockets required delicate placement.
The change worked well. Assembly took longer but the result was a thinner card which may qualify this as the thinnest electronic business card. If the LEDs were the same thickness as the board and the sides of the hole were tinned, it would be possible to make it even thinner.
Project page on EasyEDA
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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.
2017-12-29 (F)
NFC business cards, front and back
Two boards were tested with this change. One used NFC for power and one used a battery. Inserting the LEDs was difficult since they were snug but it also made it possible to hold the LED in place with friction while soldering. Placing them in the sockets required delicate placement.
Battery powered card with sunken LEDs installed
The change worked well. Assembly took longer but the result was a thinner card which may qualify this as the thinnest electronic business card. If the LEDs were the same thickness as the board and the sides of the hole were tinned, it would be possible to make it even thinner.
Stack of thin business cards
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.
2017-12-29 (F)
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