Senseur IR Intervalometre
OK now that we can read IR codes, lets make a basic project. The first one we will do is to make an intervalometer. An intervalometer is basically a electronic thingy that makes a camera go off every few minutes or so. This can be used for timelapse projects or kite arial photography or other photo projects.
The camera we'll be using has an IR remote you can use to set it off (most higher-end cameras have these).
First we will figure out the codes by reading the signal sent when the button is pressed. Then we'll take that data and make the Arduino spit out that code into an IR LED once a minute
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.
Looks like the data sent is:
suite ici [1]
PWM ON | OFF |
2.0 ms | 2.7 ms |
0.4 ms | 1.5 ms |
0.5 ms | 3.5 ms |
0.5 ms | 62.2 ms |
2.0 ms | 2.7 ms |
0.5 ms | 1.5 ms |
0.5 ms | 3.5 ms |
0.5 ms |
If you look closely you'll see its actually just
PWM ON | OFF |
2.0 ms | 2.7 ms |
0.4 ms | 1.5 ms |
0.5 ms | 3.5 ms |
0.5 ms | 62.2 ms |
sent twice. Sending the same signal twice is very common - doubling up to make sure it gets received
Next up we'll need to connect an IR 940nm LED to the output of the Arduino
Then we'll write a sketch which will pulse pin #13 on and off very fast in the proper code sequence.
Du code ici
Traduit avec l'autorisation d'AdaFruit Industries - Translated with the permission from Adafruit Industries - www.adafruit.com
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