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IR Wiring
Posted: 30 Apr 2011, 15:26
by fuzzball27
Hello again!
I have an IR transmitter hooked up to my NXT
I am running a very simple program to turn the transmitter on and off:
Code: Select all
task main () {
SetSensorLight(IN_1);
while (TRUE) {
SetSensorType(IN_1, IN_TYPE_LIGHT_ACTIVE);
Wait(1000);
SetSensorType(IN_1, IN_TYPE_LIGHT_INACTIVE);
Wait(1000);
}
}
To ensure that the transmitter is working, I am using my phone camera. Indeed, the transmitter is working, but it is not turning off...
Does anyone know why this might be?
Re: IR Wiring
Posted: 30 Apr 2011, 15:28
by fuzzball27
I have tested the program with my Light sensor, and it does work, meaning this is a hardware problem.
Any ideas?
Re: IR Wiring
Posted: 30 Apr 2011, 18:47
by mattallen37
How is it wired?
Re: IR Wiring
Posted: 30 Apr 2011, 20:46
by fuzzball27
Green 4.3V wire --> IR Transmitter --> 560 Ohm Resistor --> Ground (Red)
Re: IR Wiring
Posted: 30 Apr 2011, 21:50
by mattallen37
The green one is always powered (when the NXT is on). It is the sensor supply voltage.
Pin 5 (yellow) is the control pin used for the light sensor. It is turned on and off to control the light. You should use a transistor to handle the power though.
Re: IR Wiring
Posted: 01 May 2011, 18:40
by fuzzball27
Thanks! I'll give it try
Re: IR Wiring
Posted: 01 May 2011, 19:34
by fuzzball27
It's working great! Thanks for the help.
Re: IR Wiring
Posted: 02 May 2011, 17:04
by mattallen37
Cool!