REV0.02 badges arrived. I didn't even take time to recycle the shipping bag, which stood in as my workspace protector. All the parts were gathered. This version relied on the original part list except a 4.7K ohm resistor had replaced R1.
Everything was assembled according to expectations, but the resistors still produced unreliable results. A 50K ohm potentiometer was soldered in place of R1 and adjusted. It seemed that the high resistance worked best, which disagreed with the findings of the first badge.
Somehow, the badge only worked with equally-sized resistors, but the circuit was finally reliable. The original instructions called for 47K ohm resistors, but 50K ohm produced a slower blink, and 100K ohm was an attention-getting, but agreeable, speed.
A third badge was soldered with 220K ohm resistors and AA batteries. The yellow Grindfest badge was my favorite because the lights flashed slowly, and the batteries would last a long time compared to the coin cells.
Photo bursts could not accurately capture the blink speed of the badges, so a five-second video is below.
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.
2019-05-29
Necessary parts ready to assemble
Everything was assembled according to expectations, but the resistors still produced unreliable results. A 50K ohm potentiometer was soldered in place of R1 and adjusted. It seemed that the high resistance worked best, which disagreed with the findings of the first badge.
Potentiometer experimentation
Fixed resistor experimentation
Somehow, the badge only worked with equally-sized resistors, but the circuit was finally reliable. The original instructions called for 47K ohm resistors, but 50K ohm produced a slower blink, and 100K ohm was an attention-getting, but agreeable, speed.
Fast blink on the right and slow blink on left
A third badge was soldered with 220K ohm resistors and AA batteries. The yellow Grindfest badge was my favorite because the lights flashed slowly, and the batteries would last a long time compared to the coin cells.
Different outputs in low light
360 view of Grindfest badge
Photo bursts could not accurately capture the blink speed of the badges, so a five-second video is below.
(0:05) Blinking rate video
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.
2019-05-29
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