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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Safe line IR laser which will be seen from 15 meters by camera module

What characteristics (wavelength, mW) IR line laser should have to: be seen by camera module from 15 meters outdoor in day-light too safe for eyes line as big as possible thickness of line should ...
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1answer
46 views

Small low-power device-to-device proximity detector

I would like to find or create a small low-power proximity detector to tell a device when another device is near. This would be coupled to a small microcontroller like the AT-tiny 45. It doesn't ...
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0answers
43 views

How to amplify the signal of a TCRT5000 phototransistor

I'm trying to read the IR signal from my Itron C1S Power meter. It has an emitter that lights up for 10 ms every Wh of consumption. This question is based on my prior question: Use a photoresistor ...
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0answers
44 views

Remote controlled socket issue relay [on hold]

I have bought a remote controlled socket (ebay url given below). I connected it to an extension box (LED TV, Settop box and a small amp, totaling roughly about 250 watts) and I am in India(220V AC, ...
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6answers
137 views

Control a lot of IR sensors with Arduino / Build a game board tile

Is it possible to control a lot (let's assume 100) of TCRT5000 IR distance sensors with one Arduino? So just use one or a few pins but not 100? I am relativly new to the Arduino/electronics area and ...
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1answer
48 views

Explanation and usage of LM324

I am trying to make a line follower robot using LM324 as comparator, but I cannot understand the theory or the explanation of this circuit. I also don't know how to calibrate it with the IRs.
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1answer
45 views

High quality IR projector for depth detection

I want to build my own depth sensor like the way Kinect does it, using IR and a Camera but I can't find anywhere where I can get the "IR Camera". I do not need a CMOS board as I will be computing ...
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3answers
297 views

Sending audio over infrared?

I am an undergraduate and new to electronics. I wanted to know if it is possible to send audio over an infrared LED? I plan to use a 555 timer to generate PWM output with carrier at around 44 Khz to ...
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1answer
65 views

Two arduino unit communication

OK plain and simple I'm not sure to use IR or RF. This is short distance up to maybe 10 ft. I have an Arduino Uno that I have all set up here. I press a button and it carries out its code. This is ...
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1answer
60 views

Interesting observation on strange behaviour using motors and IR transceiver

I am working on a robot with with the following specs: Two coin type vibration motors rated at 3V for locomotion Motors triggered using two darlington transistors (sample schematic shown below) ...
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2answers
53 views

Issues related to Bit-banging transceiver modules

I have two Infrared Transceiver modules from TFDU4101-TR3 on two separate boards each interfaced to ATMega164PA microcontroller. To drive these transceivers an endec is needed which I have not used in ...
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2answers
71 views

How to connect IR sensor ( Infrared detector/receiver )?

Would you give me a hand ? I have an IR sensor with 3 pins. It looks like the one in the picture, and I did not find any datasheet for it on the internet. actually, I have 3 questions : 1- I want ...
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3answers
80 views

How can I increase the range of an infrared emitter?

I'm currently using this set of infrared emitters and detectors. It appears that I only get about 10 cm of signal before the detector doesn't pick it up. It's on +5v power with a 10k pull-down ...
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1answer
104 views

How much power/intensity IR Diode should have to be seen from 30-50 meters

How much power/intensity IR Diode should have to be seen from 30-50 meters by camera with IR pass filter? Must be a good point in a photo. Should be seen in a day light. Preferably with wide angle. ...
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2answers
87 views

What's the difference between an infra-red and a normal phototransistor?

I was wondering if there is any difference between an infra-red phototransistor and a normal phototransistor. I was also wondering if either of these would be directly compatible with an Arduino? ...
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1answer
113 views

Beam Angle vs Viewing Angle

I am looking at the product specs for an IR light and see that it has: Beam Angle: 50 deg Viewing Angle: 25 deg What is the ...
2
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1answer
127 views

Converting Pronto hex codes to raw on/off pulses

I'm really just getting my feet wet when it comes to IR protocols and IR codes in general, so my knowledge and understanding may be a bit shaky here. I am a programmer and am trying to create a tool ...
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2answers
183 views

Transistor Ohms

I've built the circuit in the schematic below to control my TV, the D1 and D2 LEDs are the two mini LEDs from this IR Extender: I've cut it below the female headphone jack and I'm using my ...
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2answers
85 views

Why is IR Transceiver transmitting/receiving rubbish?

I am trying to interface two microcontrollers wirelessly using IR transceivers. The microcontroller I'm using is ATMega164PA running on a 3.3V supply at 8MHz and the transceiver is TFDU4101-TR3. I am ...
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1answer
49 views

Micro Controllers to control Solenoid valves upon receiving signal from PIR Motion Sensor

I am using a PIR Sensor of Sparkfun(Model 8630) to detect human's presence in washroom. If there is no human presence in an interval of 30 minutes, the Solenoid Valve connected to pipe line in the ...
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2answers
423 views

Robot following you; what's the best way?

I built a human-sized robot that can follow anyone wearing an IR beacon. It works quite well indoors and it's quite precise, but outdoors it is completely blind due to sunlight infrared. I have a ...
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1answer
87 views

Can an IR camera be used in broad daylight?

I am wondering if it is at all possible to have an IR camera that can be faithfully used in broad daylight. I have already seen this question here, but I am looking to understand if a full blown ...
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2answers
101 views

Can I use this IR Transceiver for communication and obstacle avoidance?

I am building two robots. For communication and obstacle avoidance I am using Infrared. I bought this IR transceiver TFDU4101-TR3 (http://www.farnell.com/datasheets/1675739.pdf)which I thought I could ...
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0answers
96 views

Poor man's IR obstacle sensor make sense(improve) from signal under daylight

I'm talking about this kind of sensor: Question and then long description: can I do something to improve their blindness in front of window? At least for detection of object in front of the robot, ...
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1answer
59 views

Need Superbright Infrared Emitter [closed]

I need a superbright infrared emitter(800nm to 1000nm) with a 90 degree horizontal and 4 degree vertical field of view that will be clearly visible 100 meters away. And it needs to have a rise/fall ...
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1answer
52 views

Which schematic should I use with CNY 70?

I have tried this three schematics (pictures below), and they all seem to be working mostly the same. So I can't choose which one to use, and what are the advantages/disadvantages. Any ideas ? P.s. I ...
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1answer
51 views

What is the wavelength of an Itron C1S IR LED?

I'm trying to find an appropriate IR Phototransistor for an Itron Centron C1S Meter. But I can't figure out exactly what is the wavelength of the IR transistor used by Itron. Do meters have standard ...
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1answer
169 views

Use a photoresistor to read an IR LED from an Itron energy meter

I want to read my meter at home with an Arduino board. My meter, an Itron C1S, has an IR emitter that pulses once (10ms width) every Wh. I want to know if it is theoretically possible to use a ...
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2answers
113 views

IR proximity sensor

I have built an IR proximity sensor using a normal 940nm IR LED, Tsop 4856 kHz IR photodiode. I have used 555 timer to generate pulses to the IR led. the circuit is working correctly as far as I know. ...
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1answer
54 views

3 Pin IR Reciever Schematic

I have been looking for this on google and couldn't find it, what does the schematic look like for a 3 pin IR reciever (ground, +5v, out)?
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3answers
293 views

Sequence multiple IR remote commands (button presses)

A bit of a story here: I would like to be able to quickly and easily turn on/off captioning on the cable TV box. Normally this would require 10(!) button presses. It's hard to be sure, but I expect ...
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1answer
47 views

Detecting ball moving between IR pair and handling ambient light changes

I plan to use the SEN-00241 IR Emitter and Detector pair to detect a ping pong ball moving fast between them. I understand I could watch for voltage changes to detect this passing object, however how ...
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1answer
62 views

Difference between infrared heating tube coatings?

I'm converting a toaster oven to a SMD reflow oven and have found the thermal momentum of the resistive elements to be a problem (standard dark-grey type). So I've been searching online for some ...
2
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1answer
50 views

IR receiver part interchange

I've got an old stereo that doesn't have a remote control. There was a model that did, and after looking at the service manual it looks like I just need to populate a PCB with an IR receiver to add ...
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1answer
169 views

IR proximity sensor for automatic spraying

I am a beginner in field of circuits, so excuse me for my amateur questions. Let me explain my task: I have to build a low cost proximity sensor for a sense and spray device. I have read various ...
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0answers
124 views

Helicopter rotor blade system detection approaching objects

I am working on this project to detect anything that is entering the zone of RC helicopter blades (around 10cm diameter) region and stop the rotor. It needs to detect any solid object so metal or ...
2
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2answers
92 views

Creating a large motion sensing plane

I want to try and create a "motion sensing plane" where users can have contact points (their hands) detected when it passes through an invisible plane. Think of it like a giant tablet touch screen, ...
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1answer
109 views

Positioning a quadcopter using IR signal

I need to get an autonomous quadcopter above a bucket (60x40 Cm) and deliver a payload inside. The idea is to get near the bucket using the GPS. Then guide the copter by putting some IR emitters ...
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1answer
108 views

Make sure that this circuit is safe

I am going to feed 5V unresisted in through pin 3, ground out pin 2, and then read the output from pin 1. Would that be correct for this IR sensor? Also is this analog or digital output signal?
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1answer
85 views

Can infrared cameras be used in the presence of light or is it compulsory it has to be used in the dark, to get a thermal image of the desired object? [closed]

The question I asked could seem silly but I was wondering if there was a way of capturing the heat signatures of objects or people even during the day time. Also if we were to use an infrared camera, ...
0
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1answer
127 views

Decode an infrared signal with an IR demodulator inside a microphone jack

I was looking at this tutorial about how to decode an infrared signal. One of the posts says For the scoped challenged (like me), a PC microphone jack works great for reverse engineering IR ...
0
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1answer
77 views

Make sure this equipment can do what I want (infrared decoding) [closed]

I'm CS but took a digital electronics physics class at my old university and found it really interesting so I wouldn't mind having my own small EE workshop. For my main project I just want to decode ...
0
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1answer
67 views

How do car remote lock works? [closed]

How do car remote control work? On what medium do they communicate? How do the transmitter and receiver communicate? Is it blue tooth, infrared or any other kind technology?
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1answer
114 views

MilesTag IR communication protocol

I'm making my own laser tag and I was checking out existing open source solutions. The MilesTag protocol uses 600us as the basic pulse length. This however limits the maximum rounds per minute to ...
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2answers
46 views

Infrared Signals w/ Arduino

I am working on a project that uses infrared LEDs to send signals at certain intervals. The arduino I was planning to use would've been sending data @ 9600 mbps, and sent a signal, such as "hi" every ...
3
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1answer
100 views

Circuit Board Design Help (Novice) [closed]

I would like to see if the project that I am currently working on is something that can be done. Any help I can get would be much appreciated. I hope I am providing enough information. I am looking ...
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2answers
224 views

Why was a resistor and capacitor used in this IR receiver circuit

The circuit shows an IR receiver whose output pin is interfaced with a PIC. Can you explain why a resistor and capacitor were used and why those values were picked.
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167 views

Multiple infrared proximity sensors and Arduino

I am wondering if it's possible to connect multiple infrared proximity sensors as this one http://www.adafruit.com/products/1568 to an arduino uno. I would need to connect 5 of them pointing in ...
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3answers
95 views

Datasheet's frequency vs. real-world frequency for IR LED

I am very new to calculating frequencies, but here goes... The datasheet for an infrared LED states that it can handle a current of up to 1A when the voltage is pulsed at 300 pulses per second and a ...
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85 views

How many IR LEDs needed to get accurate remote control signals around room

I'm trying to make a stationary TV remote control and I'm not noticing the difference between using 12 IR LEDs and 1 IR LED. I still can't get the TV (for example) to get the IR message if the LEDs ...