I went through the expected power draw for the badge, and I hope I overestimated the unknowns, like how much power could be used by the SAO ports. At worst, I expected to draw a few amps. At this rate, the badge would have to be running a handful of external boards, transmitting on Wifi, and all the LEDs would have to be running at full power. Wireless is not on my scope yet, but not out of the question. I decided to use LM2596S regulators since they appear as modules on eBay which suggests they are a well-reputed component, and we could probably get clones if necessary. The footprint is similar on higher-powered devices in the same line, so I can swap it if the boards are underpowered.
I searched for the supporting components on Mouser, Digikey, and Arrow. These components were passives like a diode, capacitor, and an inductor. Each badge will have two regulators, one for 3.3V and one for 5.0V, and I can double up on the supporting components for convenience’s sake. I added links to my BOM, but that was for whoever buys parts during the final build.
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
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.
2020-01-23
I searched for the supporting components on Mouser, Digikey, and Arrow. These components were passives like a diode, capacitor, and an inductor. Each badge will have two regulators, one for 3.3V and one for 5.0V, and I can double up on the supporting components for convenience’s sake. I added links to my BOM, but that was for whoever buys parts during the final build.
Picture of BOM
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
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.
2020-01-23
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