Metronomes can be expensive but with an Arduino and a few parts you can make an extensible metronome.

Step 1: Parts

- Arduino (any normal sized Arduino will be fine)
- The Arduino IDE and the knowledge to use it
- Lots of wires
- HD44780 LCD Display (I've used a 20x4 but a 16x2 will work fine)
- 3x 100K Ohm Resisors
- A rotary encoder -- must have a button
- 1M Ohm Resistor
- TDA7052 Amp
- Speaker
- 44K Ohm Potentiometer
- 100k Ohm Potentiometer
- 100nF non-polarised capacitor
- 100uF 16v electrolytic capacitor
<p>Very good instructable, but What does a 44k ohm potentiometer do ?? </p>
<p>Please where is the code link ?</p><p>thanks.</p>
This looks very cool and it gives me some ideas, for example automation of lights. This may help a person with timing values when writing the sketch for them lights. <br>Just wondering if you know of a way to have Arduino listen for, and store, the beat of a song playing? <br> <br>At any rate I'm going to try this and thanks it's very cool, nice video too!
Really sorry it took me so long to reply. <br> <br>Listening to something on the Arduino sounds fairly difficult I'm afraid. Analysing songs is generally quite a difficult and computationally expensive thing to do and I can't find any libraries for it. I'm not sure how you would even get a microphone talking to the arduino. Sorry <br> <br>I'm really glad you liked it

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