tutorials:learn:sensors:ir.html
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tutorials:learn:sensors:ir.html [2010/10/07 20:16] daigo |
tutorials:learn:sensors:ir.html [2016/01/28 18:05] (current) |
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| ==== ==== | ==== ==== | ||
| - | [[http://www.ladyada.net/learn/../make/logshield/Documents/ladyada_net-www/ladyada_net-www/images/sensors/pna4602.jpg|{{ http://www.ladyada.net/images/sensors/pna4602_t.jpg?nolink&500x385 |}}]] | + | [[http://www.ladyada.net/images/sensors/pna4602.jpg|{{ http://www.ladyada.net/images/sensors/pna4602_t.jpg?nolink&500x385 |}}]] |
| ==== What is an IR detection sensor? ==== | ==== What is an IR detection sensor? ==== | ||
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| - | There are a few difference between these and say a [[cds.html|CdS Photocells]]: \\ | + | There are a few difference between these and say a [[http://www.ladyada.net/learn/sensors/cds.html|CdS Photocells]]: \\ |
| Line 18: | Line 18: | ||
| - | *[[#test|Test your IR sensor to make sure its working]] | + | *[[#testing_your_ir_detector|Test your IR sensor to make sure its working]] |
| - | *[[#rawir|Read raw IR codes into a microcontroller]] | + | *[[#ir_remote_signals|Read raw IR codes into a microcontroller]] |
| - | *[[#intervalometer|Create a camera intervalometer]] | + | *[[#making_an_intervalometer|Create a camera intervalometer]] |
| - | *[[#ircommand|Listen for 'commands' from a remote control on your microcontroller]] | + | *[[#reading_ir_commands|Listen for 'commands' from a remote control on your microcontroller]] |
| ==== Some stats ==== | ==== Some stats ==== | ||
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| {{ http://www.ladyada.net/images/sensors/arduinopna4602.gif?nolink&618x416 |}} | {{ http://www.ladyada.net/images/sensors/arduinopna4602.gif?nolink&618x416 |}} | ||
| - | The good news is that it is very easy to hook up this sensor. Just connect the output to a digital pin. The bad news is that the Arduino's friendly **digitalRead()** procedure is a tad too slow to reliably read the fast signal as its coming in. Thus we use the hardware pin reading function directly from pin D2, thats what the line IRpin_PIN & (1 << IRpin)does. | + | The good news is that it is very easy to hook up this sensor. Just connect the output to a digital pin. The bad news is that the Arduino's friendly **digitalRead()** procedure is a tad too slow to reliably read the fast signal as its coming in. Thus we use the hardware pin reading function directly from pin D2, thats what the line "IRpin_PIN & BV(IRpin))" does. |
| [[http://github.com/adafruit/Raw-IR-decoder-for-Arduino|You can also get the latest version of this code on github]]<code C> | [[http://github.com/adafruit/Raw-IR-decoder-for-Arduino|You can also get the latest version of this code on github]]<code C> | ||
| Line 197: | Line 198: | ||
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| // while (digitalRead(IRpin)) { // this is too slow! | // while (digitalRead(IRpin)) { // this is too slow! | ||
| - | while (IRpin_PIN & (1 << IRpin)) { | + | while (IRpin_PIN & _BV(IRpin)) { |
| // pin is still HIGH | // pin is still HIGH | ||
| Line 277: | Line 278: | ||
| - | OK step one is easy, point the remote control at the IR sensor and press the button, we got the following for our ML-L3 Canon remote | + | OK step one is easy, point the remote control at the IR sensor and press the button, we got the following for our ML-L3 Nikon remote |
| {{ http://www.ladyada.net/images/sensors/canonirread.gif?nolink&385x307 |}} | {{ http://www.ladyada.net/images/sensors/canonirread.gif?nolink&385x307 |}} | ||
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| <code C> | <code C> | ||
| - | // This sketch will send out a canon D50 trigger signal (probably works with most canons) | + | // This sketch will send out a Nikon D50 trigger signal (probably works with most Nikons) |
| // See the full tutorial at http://www.ladyada.net/learn/sensors/ir.html | // See the full tutorial at http://www.ladyada.net/learn/sensors/ir.html | ||
| // this code is public domain, please enjoy! | // this code is public domain, please enjoy! | ||
| Line 338: | Line 339: | ||
| Serial.println("Sending IR signal"); | Serial.println("Sending IR signal"); | ||
| | | ||
| - | SendCanonCode(); | + | SendNikonCode(); |
| delay(60*1000); // wait one minute (60 seconds * 1000 milliseconds) | delay(60*1000); // wait one minute (60 seconds * 1000 milliseconds) | ||
| Line 364: | Line 365: | ||
| } | } | ||
| - | void SendCanonCode() { | + | void SendNikonCode() { |
| - | // This is the code for my particular Canon, for others use the tutorial | + | // This is the code for my particular Nikon, for others use the tutorial |
| // to 'grab' the proper code from the remote | // to 'grab' the proper code from the remote | ||
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| - | If you look at SendCanonCode() you will see the IR command code that we deduced in the previous project by timing the pulses from the IR sensor. | + | If you look at SendNikonCode() you will see the IR command code that we deduced in the previous project by timing the pulses from the IR sensor. |
| [[http://www.ladyada.net/images/sensors/intervalometer.jpg|{{ http://www.ladyada.net/images/sensors/intervalometer_t.jpg?nolink&500x463 |}}]] | [[http://www.ladyada.net/images/sensors/intervalometer.jpg|{{ http://www.ladyada.net/images/sensors/intervalometer_t.jpg?nolink&500x463 |}}]] | ||
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