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1answer
37 views

Powering 4 modulated IR LEDs through transistor

I've done some research but can't seem to find an answer to my specific problem. I'm using an Arduino as a beam-break sensor. In order to do that it modulates the IR LED at 38kHz by code and listens ...
1
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1answer
55 views

Modulated IR for optical transmission of encoder data (TSOP 4840)

Some background: I am a mechatronics engineer and I have just recently started my first job out of university as an electrical engineer. I feel a little out of my depth but I wasn't going to turn the ...
0
votes
1answer
790 views

Can you get an infrared remote's signal modulation with an Arduino?

Let me preface that I am very much an electronics noob. I am decent with programming. I have an RCA L40FHD41 HDTV that I bought in 2010. I have tried using many universal remote with this TV, but ...
3
votes
1answer
586 views

maximizing IR range and peak current

I ordered a bunch of infrared detector diodes (aka IR diode) and infrared transmitters. luckily the detectors are blue (and don't respond to normal room light). I am planning to order a bunch of ...
0
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1answer
258 views

How can IR frequency modulation be used to detect distance?

The new TSSP4056 proximity sensor from Vishay "determines distance by varying the carrier frequency used to drive the emitter between 30 kHz and 54 kHz, thereby finding the threshold frequency at ...
0
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1answer
440 views

Why does this IR receiver not receiving some signals?

I am trying to read some IR signals. There is a synchronizer emitting modulated IR signals. And my receiver must receive those signals and interpret them. Actually, there are only two different ...
3
votes
1answer
80 views

Help identifying modulation scheme

I'm trying to identify the following modulation scheme being used to transmit a infrared code. It looks like manchester, but there's some gaps where there's no transitions. The code being ...
1
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1answer
519 views

Retrofit a Hi-Fi remote with a RF 433 MHz module

In the past I used a remote for a AIWA Hi-Fi to control a AVR processor and circuit I custom made. I used an infrared receiver from Vishay (tuned on the 38 kHz) to demodulate the signal, then fed to ...
1
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1answer
977 views

Can I hard wire an IR remote directly into the receiver?

I have a IR remote control and a clock (which it is designed to control.) I would like to remove the IR LED from the remote and the sensor from the clock, and run a wire between the two (so the clock ...
-2
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1answer
836 views

38 kHz signal arduino demodulation

I need to demodulate signal with frequency 38 kHz coming from remote controller without IR receiver. I need to demodulate it and as a result get information from it. Is there any examples of similar ...
0
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1answer
181 views

Appropriate use of the word “modulated”

I don't use the word "modulated" very much and I would like to make sure I use it correctly. The TSSP77038 IR receiver module is a device that detects infrared light turning on and off quickly at a ...
1
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2answers
185 views

How can I toggle a astable 555?

I'm using a NE555 running at 37KHz to generate a carrier frequency for transmitting IR. Now I need to modulate it using OOK, I know that are various ways to toggle it. The most obvious way is to ...
0
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1answer
2k views

Arduino beacon for IR Seeker v2 (Mindstorms NXT Sensor) - Pulse IR at 38Khz Carrier and 1200 Frequency

I hate to ask a question like this, that is kinda just like "give me the code" but seriously. I've tried reading up on it everywhere, and I just don't seem to get a thing of having both a carrier ...
6
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3answers
5k views

Any ideas to make IR LEDs identifiable during position-tracking?

Background Johnny Lee demonstrated various interesting ideas (detailed, e.g., in this video as well as this page) that take advantage of the Infrared camera from a Wii-Remote. The IR camera has ...