The infrared signaling seemed to be different from serial communication, so merely swapping serial cables for infrared devices would not work. I am glad I tried and learned more. I installed a couple of IR remote control libraries to find one that I could understand and work with the ESP32. The RX2 and TX2 pins were not labeled anything else on my board, so I had to look that up, and I added the info to the drawing. I may include a complete IO list on the drawing as I did for the screen ↔ Arduino. I tested the Arduino sketch, but I did not receive any data. To test more granularly, I wrote a quick program to monitor the receiver pin's state continuously, but it did not show any activity.
I grabbed the spare module and set it up with the Flipper Zero as a scope. I could see the data blips on the screen, and they corresponded to the LED flickering. I also saw the reader go wild when I pointed my camera at it, so I presume it used LiDAR for focusing. I also tested the sensor next to the inexpensive night vision cameras, and I did not see any noticeable depreciation, but I only tested with the IR source close to the sensors. I swapped the tested module into the tagger, but I saw no improvement. I replaced the four-sensor module with a single sensor and left it powered up overnight to test if it would fail too. It still worked perfectly the next morning, so there may be something wrong with my sensing circuit.
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
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Completed projects from year 12
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 on 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.
2025-07-30
I grabbed the spare module and set it up with the Flipper Zero as a scope. I could see the data blips on the screen, and they corresponded to the LED flickering. I also saw the reader go wild when I pointed my camera at it, so I presume it used LiDAR for focusing. I also tested the sensor next to the inexpensive night vision cameras, and I did not see any noticeable depreciation, but I only tested with the IR source close to the sensors. I swapped the tested module into the tagger, but I saw no improvement. I replaced the four-sensor module with a single sensor and left it powered up overnight to test if it would fail too. It still worked perfectly the next morning, so there may be something wrong with my sensing circuit.
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| Visualizing infrared pulses |
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
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Completed projects from year 12
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 on 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.
2025-07-30
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