Stimmmopped – optical string instrument tuner

February 18, 2010 | By admin In AVR Projects |

Do you like to play guitar? If yes, then probably you know that a significant time is spent when tuning instrument in order to play fluently. To tune a guitar you can depend on your ears or use a tuning device, or simply build one that is different from others.

As you know most of tuners use a microphone or other part to acquire sound frequency that is compared to a reference frequency. This way you know whether to strain or lose string. This particular device is interesting somehow, because it doesn’t use any microphones but couple LEDs. It is based on stroboscopic effect. Two LEDs are aligned side by side and are blinking at a frequency that string has to be tuned. When string vibrates, the two lines appear on fixed positions. If LED and string frequencies don’t match – lines appear to be blinking, or moving. The whole process is to tune string frequency until lines appear to be at fixed positions and not blinking. Stimmmopped is based on battery powered Atmega8 microcontroller with 7 segment LED indicator, two LEDs and couple buttons.

16 Comments so far

  1. Tune your guitar using LEDs | Products & Tech News on February 18th, 2010

    [...] I'm also guessing that you could have some fun with it as a musical note generator, if you use some photocells to pick up the frequency of the flashing lights… [via embedds] [...]

  2. Stimmmopped lets you tune your axe with LEDs on February 20th, 2010

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  3. Anthony on February 20th, 2010

    I work at a music store and this already exists. It’s made by a company called Planet Waves and the tuner is called S.O.S Guitar Tuner. Same exact thing, except smaller. This has been around for years. Here’s the link to their website

    http://store.daddario.com/category/148531/S.O.S_Tuner

  4. Stimmmopped lets you tune your axe with LEDs » News, Specs, Reviews, Features, Price on February 20th, 2010

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  5. Stimmmopped lets you tune your axe with LEDs « Gadgets Club on February 20th, 2010

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  6. Stimmmopped lets you tune your axe with LEDs | Tech Zone 24 on February 20th, 2010

    [...] 19 Feb 2010 17:38:00 EST. Please see our terms for use of feeds.Permalink MAKE  |  Embedds  | Email this | Comments none Leave a commentCommentsLeave a Reply Kliknij [...]

  7. Stimmmopped lets you tune your axe with LEDs | Technology South Africa on February 20th, 2010

    [...] 19 Feb 2010 17:38:00 EST. Please see our terms for use of feeds.Permalink MAKE  |  Embedds  | Email this | Comments Tags: diy, guitar, guitar tuner, GuitarTuner, hack, [...]

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    [...] 19 Feb 2010 17:38:00 EST. Please see our terms for use of feeds.Permalink MAKE  |  Embedds  | Email [...]

  9. Stimmmopped lets you tune your axe with LEDs | Kios Geek. It's All About Geek on February 20th, 2010

    [...]  |  Embedds  | Email this | Comments read full article from Engadget « Entelligence: [...]

  10. Stimmmopped lets you tune your axe with LEDs | World Wide Web on February 20th, 2010

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  11. Stimmmopped lets you tune your axe with LEDs | ScriptPlazza on February 20th, 2010

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  12. Stimmmopped lets you tune your axe with LEDs | nexgenlife.com on February 20th, 2010

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  13. com3.es | Stimmmopped lets you tune your axe with LEDs on February 20th, 2010

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  14. Stimmmopped lets you tune your axe with LEDs | Bestel uit china on February 22nd, 2010

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  15. String Tuners on March 1st, 2010

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