IR is electromagnetic radiation with longer wavelengths than those of visible light at 0.74 micrometres (µm) to 300 µm, which is extends the nominal red edge of the visible spectrum.

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PIR in parallel [on hold]

I saw this question and I think I have a similar problem/question. I have: IP Camera, DCS-7010L, 5 V, 1.2 A PIR, HC-SR501 (like the one of Kudos@Dave ... I think), 4.8-20 V(dc) input, 3.3 V output ...
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2answers
52 views

Can an IR transmitter be focused?

Can a transmitting IR LED (or an array of such devices) be focused into a finite area rather than allowed to spread out? I think this is how laser tag systems are implemented but I am not sure and I ...
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25 views

What specs of power supply should I get for an IR controller for RGB 5050 LED strip?

Here's the story: Bought an LED strip kit (including 5M reel (150x5050 LEDs, rated at 36W), an IR controller, 12V, 2A AC-DC power adapter and a controller). The power supply failed after a few hours, ...
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58 views

What kind of equipment would be required to detect lobsters entering a pot? [closed]

I'm investigating creating a device to detect if (and ideally how many, although this seems much more difficult) there are lobsters in a trap. The trap would be between 20-100 feet of saltwater, and ...
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2answers
62 views

Simple & basic approach to Indoor positioning.Is it possible? [closed]

I would love to build a very simple and cost effective Indoor positioning system and i have a basic idea of how to get there..Kindly note that i have a very little knowledge of electronics... So the ...
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24 views

PIR sensor as smoke/fire detector?

We are looking for a sensor to be able to detect human activity(for security) , and also fire/smoke/heat etc , that doesn't consume a lot of current . I have read a few article,that you can achieve ...
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2answers
52 views

A question about ultrasonic sensors in general

Do ultrasonic sensors send out waves in a straight line, all the way to a reflecting substance (if any) and get reflected in the same line back to the receiver? Or do they send out a wave which ...
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20 views

Consumer IR receiver on RS-232 port without DCD

I want to build a CIR receiver for OMAP3530 SoC running Linux. I hope to be able to use LIRC library for this task. There's just one problem: the recommended IR receiver schematic uses DCD pin of the ...
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3answers
85 views

Why smartphone IR system uses an IC instead of GPIO?

I have an android based embedded system, and I would like to command ir controlled devices, such as tv, air conditioner, sound system...etc. I need both rx and tx. When I see examples on internet, ...
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2answers
85 views

How to amplify both phone audio channels in this case (infrared remote)

I'm a photographer and have limited knowledge about electronics. recently I saw this circuit: which is explained here I tried to Build it, it works fine on my laptop jack, but does not work on my ...
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2answers
44 views

Sending identification signal with IR or RF

Is there any way to build a device capable of sending an ID signal with IR or RF? For example, imagine I want my TV to know whose remote is being used (assuming everyone has a different remote). I ...
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15 views

I want To Make IR Transmitter Using STM32F2XX Controller

This is my First Questions here. I am making An IR Transmitter Using STM32F2xx. In my Project I want Implement the Pronto Protocol. My Question is, How i Transmit the code or string on IR using PWM ...
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1answer
61 views

Are IR phototransistors always dark, are IR LEDs always clear?

I've been working through the "Electronic Circuits for the Evil Genius" guide and someone bought me a components kit for the guide specifically. I already have some phototransistors where the plastic ...
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0answers
37 views

Proximity sensor for use in cotton crop field

I need some help. I am planning to make a bot that is supposed to go inspect Cotton crops. For that the bot has to travel in the lane between two crop lines. I want it to be in the middle of the lane ...
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3answers
55 views

IR LED for night vision LED driver necessary?

I am working on a project that requires a night vision camera. I have a small camera placed on the PCB and 4 IR LEDs placed around it to illuminate the dark room. The rooms are about 20-30qm. I have ...
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0answers
10 views

TSOP1738 IR False Triggering / Noise

Have been trying to figure out why the tsop1738 connected to my AVR is false triggering. When my circuit was not responding to the IR commands sent through the remote, I connected a logic analyzer to ...
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1answer
47 views

short circuit in a ir sensor

I am working on a IR sensor and i noticed that there was a short circuit. The voltage regulator 7805 output was getting clamped to 4v. And on my transmitter side i have connected 150 ohms resistance ...
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2answers
97 views

How much voltage to give my IR LED?

I got a new IR led, emitting light at 850nm. It says 5v reverse voltage and 1.5 forward voltage. How many volts should I give it? I have DESTROYED three other IR LEDs because of giving them too ...
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1answer
228 views

Can infrared electronics be harmed by an incompatible remote signal? [closed]

I recently tested a universal remote control app on my phone, for some reason it has a built-in IR blaster. The initial step is turning on a system by using one its codes. I tried to control my 2010 ...
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1answer
40 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 ...
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1answer
101 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 ...
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0answers
46 views

Nvidia 3D Vision IR Emitter to USB [closed]

I'm trying to get information on how to implement a 3D Vision module I recovered from my laptop and implement it as an USB plug for my desktop computer. I have a 144hz screen and a 3D vision enabled ...
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2answers
56 views

Non-line-of-sight distance approximation between trasmitter and receiver

I have one stationary object in a 2d plane (no z-axis). Let's say this stationary sphere is in the middle of a rectangular plane. I have another object in the same rectangular plane that is in motion ...
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39 views

Use remote controller as keyboard matrix Arduino

I need to connect remote contoller directly to arduino without using IR channel, so just like a plain matrix keyboard. I guess that it is possible just connect remote lines and row to arduino directly ...
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1answer
69 views

IR sensor is not working

I am trying to make a IR sensor but somehow its not working.Below is my circuit diagram when i bring my hand near the sensor, the led connected to pin1 of lm358N does not glow. I also checked the ...
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42 views

IR transmitter connected to 3.5 phone audio jack, 1 LED or two?

I'm building this device, but the instructions say to use 2 LED's, and due to my lack of electronics knowledge, I am wondering how necessary it is to use 2 and not just one. I tested the device with ...
6
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1answer
274 views

Arduino IR Receiver

I was reading this tutorial http://arduino.cc/en/tutorial/button, and I want to do the same, but with a 2 pin IR receiver LED. The problem is, the LED needs 1-2v max, or it will break. How can I use ...
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1answer
71 views

Simple and Cheap method to detect object proximity in the dark

I am interested in detecting if an object (e.g. small box made of non-conductive material like plastic/acrylic/wood) is placed on top of a surface (e.g., a table), I don't need to identify the object, ...
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1answer
61 views

Timed Infrared or Infrared PWM Signals

We are trying to have a moving IR receiver pickup a specific IR-led for a range of IR-LEDs. The options we're looking at : Send and unique pwm signal from each different led, the moving object ...
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1answer
46 views

How the wiring of IR emitter detector pairs work

Attached is an image from the book I am going through. I don't quite understand the schematic and was hoping someone could explain it to me, including the use of the resistors. Like, does it matter ...
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29 views

occupant sensor/detector for goods vehicles - active during driving

I need to detect and raise an alarm in the goods load area of a consumer goods vehicle if there is human movement detected whilst the vehicle is in motion. To put it simply - our goods vehicles are ...
3
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2answers
129 views

Under water distance measurement

For a laboratory / field test, I'm looking for an easy solution to measure the soil surface elevation. The test runs a flow on a bed. When the erosion takes place the sediment concentration goes high ...
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43 views

Infrared filter on CMOS single package sensor

I am trying to recognize infrared-reflectors with a CMOS module. The ideal would be to use an IR filter to get rid of everything else and only have the trackers (reflectors) on the picture. I found ...
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1answer
64 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 ...
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1answer
88 views

Help using an attiny85 and ir receiver

I'm trying to use 2 attiny85, one with an IR transmitter and one with an IR receiver (2 pins). I can't figure out how to use the attiny85 with the receiver. Help would be appreciated! If it is not ...
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43 views

Phone audio jack IR transmitter and receiver

Note: I'm quite new to electronics so I apologize for any dumb questions. Hi, I'm trying to make an infrared transciever module for my smartphone using it's audio jack. I'd like to be able to record ...
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1answer
38 views

How to adjust or obtain different IR Transmitter's distances?

I would like to recreate a infrared concept used by in the vacuum cleaning robot's charging station. I would like to use 3 infrared transmitters all in same wave length and transmit a synchronized ...
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0answers
68 views

PIR Sensor's Pin Configuration

I just bought a PIR Sensor but I can't get any help about it's pins. The sensor's model number is RPY96. I tried to use it as the three pin sensor, but it isn't working. The pin configuration which I ...
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38 views

One Transmitter for multiple recievers

I need to track case pans at work, I would like to do so by using cheap 433Mhz receivers. My problem is we have up to six hundred case pans in the building at any given time. Will I be able to use one ...
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2answers
82 views

What are some LED technology for one dimensional coherent light emission?

I need to emit a unidirectional infrared pattern, i.e. the emission cone should have small angle on one dimension and large angle on the other one (basically laser-like in one dimension and normal ...
0
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1answer
95 views

Protocol and design resource of 3.5mm stereo jack remote control

I've seen a few audio visual equipments that can be controlled with both wired (3.5mm stereo jack) and wireless (infrared). On the equipments, there are IR receiver port and also a port that resemble ...
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46 views

IR temperature Sensor reading ambient temperature in a room

I bought a product that has a IR temperature sensor and I want to receive a "good quality" ambient reading of a room. I have an idea how to use the IR sensor for the ambient, even though it would be ...
0
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1answer
98 views

IR transmitter connected to phone audio jack

I took an IR LED transmitter, and soldered it to a mono audio jack (positive pin to the left channel, negative to mass). Now, the LED is quite small, and I'm pretty sure that the phone audio output ...
0
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1answer
224 views

Load resistor value for phototransistor switch

According to this application note from Fairchild (btw, I find Fairchild's application notes to be of immense value - thanks to all who have taken the time to write one), the load resistor value for a ...
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1answer
59 views

Using IR Emitter and detector incorrectly

So I bought this from radioshack and tried to set it up following this tutorial. The problem is, the red LED lights up and when i try to interfere with the connection, nothing happens. When I remove ...
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2answers
171 views

Increasing the range of an IR based detector

I am working on a IR based object detector. I understand the basics of how it functions, i.e., 38kHz pulse through an IR LED and read the output pin of the IR sensor. The problem is that the range ...
2
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2answers
173 views

Electronic pendulum

I am building an electronic pendulum. I want to use a 2N2222 to power the drive coil when the pendulum bob interrupts an IR beam. The pendulum bob is magnetic and moves in reaction to the drive coil. ...
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1answer
120 views

Using infrared temperature sensor to measure water surface temperature

Not sure I choose the right place to ask the question, but... Can I use infrared temperature sensor (such as TS118-3) to measure water surface temperature? I'm afraid some effects as reflection of ...
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1answer
128 views

How can I control an IR jammer or other device remotely?

I am going to buy an IR jammer kit and hide it somewhere near the tv. I need a way to remotly activate the jammer. What are my options? I can also purchase the ninja stealth remote but I need some ...
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1answer
91 views

Phototransistor bandwidth issue

I'm trying to sense IR wave with a phototransistor circuit. The circuit operates well under DC operations (I mean 3V or 0V through inputs). However, if a square wave is supplied from UART input, ...