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Results tagged with ir
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user 3917
Infrared (IR) is a form of light which is not visible to the human eye. It can be used in a variety of applications, including remote controls, data transfer, reflectance sensing, and proximity/motion detection.
4
votes
Accepted
How to power IR LEDs with arduino?
But this is a IR LED” and also “Pull up the datasheet for a IR LED. Read it carefully. The AVR can't handle one of the numbers”, perhaps in reference to IR LED current requirements. … IR control protocols. …
- 8,890
3
votes
Tv remote connection to an Arduino
Using an IR library as mentioned in a previous answer is likely to be about the best approach. …
- 8,890
4
votes
Accepted
Using a transistor to get 100mA on a IR led
Here is a diagram from Peter Bennett's answer to an Electronics Stackexchange question, How much voltage to give my IR LED? … :
As you can see, the current-limiting resistor is in series with the IR LED and the transistor's collector. …
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0
votes
Generating a 38 KHz signal without timers
Several approaches are possible, some of which, but far from all, have been listed in previous answers. In following, I assume that by “use it as a light barrier” you mean that the TSOP4838 will be p …
- 8,890
2
votes
Accepted
How do i generate exact number of PWM pulses in arduino?
One way to get a fixed number of pulses is to set up an interrupt handler that is invoked once per toggle (or, once per cycle, whichever is appropriate). It can decrement a counter, and shut off an o …
- 8,890
1
vote
I am trying to combine an automatic door lock with an RFID MFRC522 with a IR REMOTE program
The error message multiple definition of __vector_7 means that you have more than one interrupt handler defined for the interrupt that has interrupt vector 7.
Although the ATmega328x datasheet in a t …
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