12/9/2023 0 Comments Old alarm clock sounds![]() ![]() If you need a basic introduction to reading the notes in a bar chart, check out this tutorial.Įdit the "melody” array on line 22 and the noteDurations array on line 27 to customize your alarm sound. Google the music chart for the song you want to use, and we’ll turn these into code notes. For me, I like to wake up to a nice, gentle sound, so I’m going to use the notes from Gymnopedie no. Next we’ll customize the melody to be something completely different. You should be hearing audio through your speaker! In this example, replace the number 8 on lines 37 and 44 with the number of your PWM pin. (Every micro-controller is different, so refer to the instructions from the manufacturer to see how to download the proper board drivers to work with Arduino.)Īrduino comes with an example digital audio script called “toneMelody.” Open the toneMelody script by going to Examples -> Digital -> toneMelody. If you haven’t already, install Arduino, and configure it to work with your micro-controller board. (Every micro-controller is different, so refer to the Pinout digagram from the manufacturer to see which pins are PWM and what the number is.) Note the number associated with the PWM pin. Hook up the positive side of the speaker to a PWM pin on your micro-controller. Hook up the negative side of the speaker to a ground pin on your micro-controller. Now get out your micro-controller, speaker and laptop to start working on your custom alarm sound. Instead I used a magnetic reed switch, which works slightly for the distance and forces and I’m working with. For example, I had hoped that a tactile or lever switch would work for my alarm, but found that it wasn’t sensitive enough. I recommend buying a few different switch types and trying them out, since your first instinct may not work.
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