Différences entre versions de « Senseur IR Test »
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| − | + | Because there is a semiconductor/chip inside the sensor, it must be powered with 5V to function. Contrast this to photocells and FSRs where they act like resistors and thus can be simply tested with a multimeter. | |
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| + | [[Fichier:pna4602pinout.jpg]] | ||
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| + | Here we will connect the detector as such: | ||
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| + | * Pin 1 is the output so we wire this to a visible LED and resistor | ||
| + | * Pin 2 is ground | ||
| + | * Pin 3 is VCC, connect to 5V | ||
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| + | When the detector sees IR signal, it will pull the output low, turning on the LED - since the LED is red its much easier for us to see than IR! | ||
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| + | [[Fichier:IR-test.jpg]] | ||
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| + | We will use 4xAA 1.5V batteries so that the voltage powering the sensor is about 6V. 2 batteries (3V) is too little. You can also get 5V from a microcontroller like an Arduino if you have one around. Ground goes to the middle pin. | ||
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| + | The positive (longer) head of the Red LED connects to the +6V pin and the negative (shorter lead) connects through a 200 to 1000 ohm resistor to the first pin on the IR sensor. | ||
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| + | Now grab any remote control like for a TV, DVD, computer, etc. and point it at the detector while pressing some buttons, you should see the LED blink a couple times whenever the remote is pressed | ||
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{{ADF-Accord}} | {{ADF-Accord}} | ||
{{MCH-Accord}} | {{MCH-Accord}} | ||
Version du 27 juillet 2012 à 10:48
Because there is a semiconductor/chip inside the sensor, it must be powered with 5V to function. Contrast this to photocells and FSRs where they act like resistors and thus can be simply tested with a multimeter.
Here we will connect the detector as such:
- Pin 1 is the output so we wire this to a visible LED and resistor
- Pin 2 is ground
- Pin 3 is VCC, connect to 5V
When the detector sees IR signal, it will pull the output low, turning on the LED - since the LED is red its much easier for us to see than IR!
We will use 4xAA 1.5V batteries so that the voltage powering the sensor is about 6V. 2 batteries (3V) is too little. You can also get 5V from a microcontroller like an Arduino if you have one around. Ground goes to the middle pin.
The positive (longer) head of the Red LED connects to the +6V pin and the negative (shorter lead) connects through a 200 to 1000 ohm resistor to the first pin on the IR sensor.
Now grab any remote control like for a TV, DVD, computer, etc. and point it at the detector while pressing some buttons, you should see the LED blink a couple times whenever the remote is pressed
Traduit avec l'autorisation d'AdaFruit Industries - Translated with the permission from Adafruit Industries - www.adafruit.com
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