A second iteration of the PCB business started to take shape. This time, there would be a self-contained circuit right on the board including a removable batter.
Batteries on business cards aren't seen often, only in the most exotic cards. The BusiNFC made it possible because there was no battery holder. Battery holders stick out far, catch on pockets, and are easy to crush. Not to mention, they're so large you can only carry a couple cards in your pocket.
Batteries have been soldered into business cards to reduce the thickness but now they're not removable and the card needs a switch or it will remain active all the time. Plus, replacing the battery would involve soldering.
The Busi555Rake was designed to use the flexible nature of thin, 0.6mm, PCBs to hold a battery and still allow it be removable without tools. This also eliminates the need for buying a battery holder. The Busi555Rake got its name from combining
Business card
555 timer circuit
Rake, which describes the little fingers with brush against the battery.
All necessary files for the project can be found on EasyEDA so anyone can make their own copy and improvements. The rake design can be printed single-sided, so multiple copies should be very inexpensive.
A few copies of the card were ordered and a color-changing LED was installed at the power terminals to demonstrate when the battery was installed correctly. Unfortunately, due to some errors in the rake fingers, the design was not fool-proof.
Project page on EasyEDA
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
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 a post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2017-09-12 (Tu)
Batteries on business cards aren't seen often, only in the most exotic cards. The BusiNFC made it possible because there was no battery holder. Battery holders stick out far, catch on pockets, and are easy to crush. Not to mention, they're so large you can only carry a couple cards in your pocket.
Batteries have been soldered into business cards to reduce the thickness but now they're not removable and the card needs a switch or it will remain active all the time. Plus, replacing the battery would involve soldering.
The Busi555Rake was designed to use the flexible nature of thin, 0.6mm, PCBs to hold a battery and still allow it be removable without tools. This also eliminates the need for buying a battery holder. The Busi555Rake got its name from combining
Business card
555 timer circuit
Rake, which describes the little fingers with brush against the battery.
All necessary files for the project can be found on EasyEDA so anyone can make their own copy and improvements. The rake design can be printed single-sided, so multiple copies should be very inexpensive.
Busi555Rake card layout
A few copies of the card were ordered and a color-changing LED was installed at the power terminals to demonstrate when the battery was installed correctly. Unfortunately, due to some errors in the rake fingers, the design was not fool-proof.
Trying to get power from a coin cell
Project page on EasyEDA
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
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 a post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2017-09-12 (Tu)
Comments
Post a Comment