IR Wiring

[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?

[fuzzball27]

I have tested the program with my Light sensor, and it does work, meaning this is a hardware problem.
Any ideas?

[mattallen37]

How is it wired?

[fuzzball27]

Green 4.3V wire --> IR Transmitter --> 560 Ohm Resistor --> Ground (Red)

[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.

[fuzzball27]

Thanks! I'll give it try

[fuzzball27]

It's working great! Thanks for the help.

[mattallen37]

Cool!