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.
4
votes
1answer
72 views
Can I use a 940nm laser diode for a remote control?
Most TV remotes use 940-950nm LEDs. The TV-B-Gone uses a combination of short ranged, wide output and long ranged, narrow output LEDs, to have a combination of easy mark hitting and longer range.
Say ...
2
votes
1answer
105 views
How to get consistent codes from IR receiver module TSOP1738
I'm doing some experiments with a TSOP1738 receiver module. I picked up a small 'remote control' (aka an IR transmitter) from my car audio system and I'm trying to send some command over to a robot. I ...
1
vote
3answers
134 views
How to make a wired input IR demodulator?
Objective: I'm trying to make a wired infrared input for a microcontroller. Incoming signal would come from a remote control device that has an IR emitter output jack.
I believe that all I need is ...
2
votes
1answer
87 views
Arduino IR remote NEC control
I'm trying to build a generic IR remote controlling device using an arduino.
I've done some investigation to discover the IR protocol used by my NAD SR8 remote controller.
I've connected a simple ...
3
votes
1answer
96 views
PIR Detector Controller IC
Honestly, I have a good deal of questions so this may not be for the faint of heart.
I will do my best to ask them in a logical order with specific language. I really appreciate the helpful ...
0
votes
1answer
26 views
Implement IR protocol using only one timer
I want to implement the transceiving part of an IR protocol for my Samsung remote on an nRF54822, using an ARM Cortex M0 core. The protocol is very much like the NEC Protocol, and is using a carrier ...
0
votes
0answers
70 views
Create own bluetooth device: do I need a micro? + others
I'm in the design stages of a bluetooth device I want to create but I have a few questions. I'm a BIT(literally 1 bit, 01) familiar with electronics, I can program though so keep that in mind.
My ...
0
votes
2answers
114 views
Infra-Red via Arduino (Two IR Leds)
Good Day,
I am trying to build an IR system that works via the Arduino. So far, it works great. However, I want to have one IR Led on the back of my device and one in the front. However, the Arduino ...
2
votes
2answers
115 views
IR Emitter/Detector with 555 timer alarm
I have this circuit that detects when a tube is empty and pulses a piezo buzzer in .5 second intervals. I have it working with 5v on a breadboard, but I need to move it to 12v from a wall wart.
...
4
votes
1answer
273 views
How to Use SFH235 IR Photodiode Correctly?
I have an SFH235 ir photo-diode (which datasheet can be found here) and only basic knowledge of electronics.
I want to connect the photodiode to an Arduino (the grand-plan is to add an ir diode and ...
1
vote
1answer
107 views
how do i connect a photodiode detecting laser?
I want to send data through a tissue using a 850nm Laser diode.
I would like to know how to connect a PIN photodiode on the receiver side?
-1
votes
1answer
131 views
How to determine infrared protocol using PIC16?
I am trying to determine the IR protocol used in a Gree room air conditioner remote control. I connected the output of the original IR receiver to pin RA5 of a PIC16F73 and used the following code to ...
3
votes
1answer
68 views
Strange and contradictory AGC characteristics in datasheet
I am trying to select an IR receiver for a remote controlled unit, from this table. Here is one example, but all of the parts exhibit the same seemingly contradictory specification.
Having a look ...
1
vote
1answer
51 views
IR receivers: how to interpet “Max. Envelope Duty Cycle vs. Burst Length”?
In the datasheet of an IR receiver IC, intended for remote control applications, there exists this graph.
Why is there such a sharp translation after a certain carrier impulse count?
3
votes
1answer
176 views
PIR sensor triggered by itself when using timer, works without timer
TL;DR
A PIR sensor is triggered by itself when using a timer to wait 2 seconds after the sensor is triggered.
Without using the timer to wait the sensor works as expected.
Background and setup
I ...
3
votes
2answers
144 views
Point-to-point range measurement using an IR receiver
I am interested in using an IR receiver (as opposed to a standalone PIN photodiode or phototransistor) to measure distance/range. I thought I had found an appropriate match in Vishay's TSSP4P38 ...
2
votes
2answers
289 views
Arduino IR practice vs. application circuit on 1838 datasheets
There is an explanation of wiring up IR remote controllers for beginners at arduino-info.wikispaces.com/IR-RemoteControl, which suggests wiring the output pin directly into an Arduino pin. I've tried ...
4
votes
2answers
203 views
How should I wire up the circuit to connect a TSOP4838 (Radio Shack 276-64) infrared receiver to an Arduino?
Beginner question on datasheets basically.
I have this part, and am working from a tutorial for the code here, but am unsure exactly how to wire up the circuit and what risk I might be at for ...
1
vote
1answer
231 views
How to amplify 3.3 volts to 8-9v?
I'm a total newbe in electronics but I like to make things up. All I want is to turn on a "black box" of leds (that operates at 8-9v) when my motion sensor is activated. The problem I've got is that ...
0
votes
0answers
56 views
11Khz IR receiver
I would like to make a receiver for this controller
http://hardware.segakore.fr/en/controller_18.html
I placed the controller in front of a photodiode, and it seems that the carrier is 11KHz instead ...
3
votes
1answer
279 views
Can I electronically trigger a PIR motion sensor?
I would like to trigger a PIR sensor using an infrared LED. Is that possible? My goal is to simulate motion in front of the PIR, when there otherwise is none. I tried using a handheld remote ...
2
votes
0answers
412 views
ATTiny 85 + shift register + ir sensor
I had the ATtiny working with the shift register, but when I added the IR receiver to the code the shift register did not work as desired.
I have a shift register connected to 8 LEDs and controled by ...
1
vote
0answers
61 views
ATtiny85 + shift register + IR demodulator [duplicate]
I had the ATtiny working with the shift register, but when I added the IR receiver to the code the shift register did not work as desired.
I have a shift register connected to 8 LEDs and controled by ...
1
vote
0answers
1k views
Arduino IR Transmitter & Receiver w/ LEDs Flickering Issue (What's wrong with this circuit?)
I have an Arduino Uno connected to two IR transmitters and respective receivers. Basically, when one of the receivers detects a beam break, I have a strand of LEDs display a pattern. This all works in ...
2
votes
2answers
73 views
Realizing an flexible, but fault tolerant, infrared communication chain
The task fell on me to realize a wireless, daisy chained communication system. The communication must be wireless, esp. via infrared diodes. The end of the chain is connected to a PC (wired).
The ...
0
votes
1answer
225 views
Wrist-based Pulse Oximeter
I'm quite new to EE. I'm trying to design a wrist-based Pulse Oximeter. I have looked through a lot of literature and short listed these:
PhD thesis using 6 LEDs
A Single-Chip Pulsoximeter Design ...
0
votes
2answers
141 views
IR Remote, use a relay to send on and off pulses
I have a little problem. I'm using the raspberry pi to send a output signal from the GPIO pins to activate / deactivate the relay. I have a IR remote, when i short the two "connectors" on (for example ...
1
vote
1answer
230 views
IR remote output signal without IR Led and TSOP
I have IR receiver module based on AVR + TSOP, it gets IR signal from remote and passes it to RF tranceiver.
Now I want to make some improvements and try to connect output (IR Led pins) of IR remote ...
2
votes
2answers
199 views
Is there any circuit like “Burglar alarm ” or “Proximity dector” with a range of 100 meters
I am in search of a circuit which works with
IR or RF wave with a range of 100 meter to detect proximity or burglar.
I need this to detect the presence of human or animals
One thing important is i ...
1
vote
1answer
443 views
How to test if a Near Infrared Emitter and Photodiode still working?
I suspect that my NIR emitter and Photodiode are not working.
Emitter http://www.thorlabs.com/thorproduct.cfm?partnumber=LED1450E
Photodiode http://www.thorlabs.com/thorproduct.cfm?partnumber=FGA20
...
1
vote
1answer
895 views
IR Arduino Transmit n Receive
I am using digital IR Receiver Module and digital IR Transmitter Module connected each with different Arduino Uno. How can I transmit data like "1234" to the receiver and display data on LCD? This is ...
0
votes
3answers
198 views
Making a flashing LED magnetic earring
I am interested in finding out if it is possible to take a simple flashing LED magnetic earring (sold as novelties all over) and either converting it or using the housing to then power an infrared LED ...
1
vote
1answer
187 views
How to choose an IR receiver?
I am working on a project that requires an IR receiver module to detect particular buttons pressed from a SONY Stereo Remote. I have a regular kind IR receiver that looks like this:
The problem ...
1
vote
2answers
138 views
using the Wii Sensor bar in a project
I'd rather not destroy any of my Wii kit, so I'm wondering if anyone knows what voltage I should drive the Wii Sensor bar with if I wanted to use it as an IR transmitter for a project.
If you're ...
2
votes
1answer
250 views
Arduino infrared problem with universal remote
I am playing with Arduino and Ken Shirriff's IR library. I am trying to control Sony audio receiver using codes I found on the net.
Everything works OK, I am able to control the device by sending IR ...
1
vote
0answers
144 views
Is there an IR receiver with external IR diode?
I need an IR receiver that can directly be used with a microprocessor - the TSOP series from Vishay seems to fit well and there are enough tutorials and software libraries to make use of it. ...
1
vote
1answer
148 views
AIC1863: How to use this MC to detect the presense of IR transmission?
I have build simple prototype on STM32 ARM Cortex microcontroller trying to understand the usage of AIC1863 IR Preamplifier for Remote Control System (see the handmade PCB on the breadboard).
MCU ...
2
votes
2answers
176 views
IR Reflectance Sensor for a Wheel Encoder - Analog or Digital?
I'm in the process of building wheel encoders for my robot and have come across 2 different IR Reflectance sensors.
Analog
Digital
I'm trying to find out what the potential benefits or drawbacks ...
-2
votes
1answer
176 views
Design of a system to measure the speed of a falling simulated raindrop
I would like to know if using an IR emitter and a photo-transistor would do the job. Here are the specs of the photo-transistor.
Also I'm using the Arduino Uno board; any tips on how to program it ...
0
votes
1answer
327 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 ...
-3
votes
1answer
208 views
What wavelength do I need for a IR pen?
For building a wiimote whiteboard what wavelength should my IR LED be? Would a 940nm one be okay?
I am planning on using this software: http://www.uweschmidt.org/wiimote-whiteboard
P.S. My specs ...
-1
votes
1answer
301 views
Should I use a resistor in this scenario?
I am building a IR pen and wondering if I need a resistor for this. Here is my specifications for my IR LED:
Forward Voltage: 1.2 V
Forward Current 100 mA
So on and so on. I am powering it with a ...
-3
votes
1answer
255 views
LED Array Resistor Size + Power Source [duplicate]
Possible Duplicate:
Calculating resistor value and power rating for LED driving
Infra Red LEDs - Voltage Advice
I need to make an array of IR LEDs, just want to check what size resistors ...
3
votes
1answer
1k views
IR Audio Receiver and Transmitter
Let me start by saying that I am a newbie on this, trying to do some hobby stuff. I am a software professional trying to interface with hardware (maybe getting into Arduino).
Using this information ...
2
votes
2answers
353 views
IR rays over carrier frequency of 34Khz?
How is IR rays that have carrier frequency of ~1014 Hz generated by GaAs in remote control carried over carrier frequency of 34Khz to the sensor?
6
votes
2answers
719 views
Underwater distance measurement/Sensing
I am working on a project from University which includes a ROV. I am trying to come up with an easy way to create a Distance Sensing system, which doesn't require a lot of work. something very simple ...
2
votes
4answers
377 views
Infrared spotlight project, need x50 resistors. How many ohms what type to use?
Infrared spotlight project.
I have a PCB BOARD set up for 150x 5mm IR LED
1.5-1.6 forward voltage.
Forward current is 60 mA
150 LED’s are divided into 50 groups (3 LEDs each + 1 resistor)
What ...
3
votes
2answers
921 views
Reading an IR signal and running one of 5 motors
Before you judge me, I'm fairly new to electronics besides the very basics, so be gentle. However, I'm quite proficient with computers at a high level; I'm decent at writing code, and have experience ...
2
votes
1answer
76 views
Why is it only one of four batteries (Li Ion) is drained?
I have a programmable TV remote control ( a Marantz I've had since 1999 or longer if it matters), it uses 4 AA batteries. I often find (at least when I use Li-Ion, non-rechargeables) that when the ...
0
votes
2answers
132 views
why could i see IR light in a camera? [closed]
Usually we are not able to see infrared rays with our naked eyes.
But we could see it when we watch it through a digital camera (or mobile camera).
Why it happens?
