I always wanted to use infrared emitters and receivers as a serial port, and since Arduino pins can output the necessary power, it seemed like a good time to try. I began a serial connection in an Arduino sketch and checked with an IR camera. The receiver kept picking up noise, and the emitter was continuously on, as expected from a serial Tx pin.
I swapped the pins on the emitter so it became a sinking device with power applied to the positive pin and the signal on the negative pin. I streamlined the program to transmit faster, and I could see infrared blips whenever I transmitted, and I could see a pulse train on my Flipper Zero set up to map incoming infrared signals. The best course is to switch to one of the infrared remote libraries for transmitting and receiving.
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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.
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2025-07-29
I swapped the pins on the emitter so it became a sinking device with power applied to the positive pin and the signal on the negative pin. I streamlined the program to transmit faster, and I could see infrared blips whenever I transmitted, and I could see a pulse train on my Flipper Zero set up to map incoming infrared signals. The best course is to switch to one of the infrared remote libraries for transmitting and receiving.
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| Screenshot showing IR modulation received by a Flipper Zero |
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.
2025-07-29
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