From a045ba378ef80dba7b1f6b65136e6e733452d59a Mon Sep 17 00:00:00 2001 From: Galen Nickel Date: Wed, 10 Apr 2019 11:01:25 -0700 Subject: [PATCH] Some linking for 'speakers' hw video (#1997) --- docs/projects/SUMMARY.md | 2 ++ docs/projects/hack-your-headphones/make.md | 7 +++++++ docs/reference/music/making-melodies.md | 8 ++++++++ 3 files changed, 17 insertions(+) diff --git a/docs/projects/SUMMARY.md b/docs/projects/SUMMARY.md index 0c75006a..ce560a55 100644 --- a/docs/projects/SUMMARY.md +++ b/docs/projects/SUMMARY.md @@ -89,3 +89,5 @@ * [Temperature Sensor](https://youtu.be/_T4N8O9xsMA) * [Pin Pressed](https://youtu.be/GEpZrvbsO7o) * [Radio](https://youtu.be/Re3H2ISfQE8) + * [Servo Motor](https://youtu.be/okxooamdAP4) + * [Speakers](https://youtu.be/cxfPNc4Wefo) diff --git a/docs/projects/hack-your-headphones/make.md b/docs/projects/hack-your-headphones/make.md index 6b7ab221..00b37819 100644 --- a/docs/projects/hack-your-headphones/make.md +++ b/docs/projects/hack-your-headphones/make.md @@ -46,6 +46,13 @@ Using the 2nd crocodile clip, connect the second end of the crocodile clip onto You hacked your headphones! +## Step 6 + +Watch this video to see how speakers and headphones make sound when connected to your @boardname@. + +https://www.youtube.com/watch?v=cxfPNc4Wefo +
+ ## ~button /projects/hack-your-headphones/code NEXT: music of light diff --git a/docs/reference/music/making-melodies.md b/docs/reference/music/making-melodies.md index bc6e6dd3..85f35670 100644 --- a/docs/reference/music/making-melodies.md +++ b/docs/reference/music/making-melodies.md @@ -8,6 +8,14 @@ A _note_ is a tone that is recognized as part of music. A note has a name like ' On your @boardname@, a note is played on the speaker by sending a signal to a it with a certain _frequency_ called [Hertz](http://wikipedia.org/Hertz). Frequency is how fast something vibrates during one second. If you ring a bell that was made to play an '**A**' note, the bell will vibrate at 440 Hertz (440 times per second). So, notes are just certain frequencies that have special names. +## ~ hint + +Watch this video to see how speakers and headphones make sound when connected to your @boardname@. + +https://www.youtube.com/watch?v=cxfPNc4Wefo + +### ~ + In history, music came from tones that seemed nice to hear. The tones were played on wood, strings, metal, and skins. These tones were given names and they became what we know today as musical notes. Notes were named so we could write them down and remember how to play them again later. ## How are notes named?