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> Wec #1 - Tune Generator, Weekly Electronic Challenge #1
biocow
Posted: May 23, 2010 05:25 pm
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QUOTE (JoOngle @ May 22, 2010 08:23 pm)
Hey BIOCOW

You need to submit a picture of your creation - for voting purposes! rolleyes.gif

Shoot. Sorry. I can do that tonight but not til about 8 pacific time. Is that OK?


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JoOngle
Posted: May 23, 2010 07:03 pm
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QUOTE (biocow @ May 23, 2010 05:25 pm)
QUOTE (JoOngle @ May 22, 2010 08:23 pm)
Hey BIOCOW

You need to submit a picture of your creation - for voting purposes!  rolleyes.gif

Shoot. Sorry. I can do that tonight but not til about 8 pacific time. Is that OK?

Why? You're on a computer, right?

Just take a screenshot of your YouTube video...frame of choice, and post the image wink.gif



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biocow
Posted: May 24, 2010 04:55 am
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sorry, was out all day at maker faire. here's a pic.


pic

http://www.biocow.com/e/wec1.jpg

This post has been edited by biocow on May 24, 2010 04:57 am


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Abdullah M.A.
Posted: May 24, 2010 02:28 pm
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Hello JoOngle,
I just want to ask you about your circuit, did you make the second 555 produce
different tunes??
or you used the counter to produce different tunes?
thankx

Abdulla


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JoOngle
Posted: May 24, 2010 02:43 pm
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QUOTE (Abdulla M.A. @ May 24, 2010 02:28 pm)
Hello JoOngle,
I just want to ask you about your circuit, did you make the second 555 produce
different tunes??
or you used the counter to produce different tunes?
thankx

Abdulla

I used only ONE of the NE555 to produce various tones, as I said in the video.



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draget
Posted: May 24, 2010 02:53 pm
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Surprised everyone went for digital sounding tunes, I've seen a few before which modulate the 555 to various ends. A combination might have been interesting.
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Abdullah M.A.
Posted: May 24, 2010 02:54 pm
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QUOTE (JoOngle @ May 24, 2010 05:43 pm)
QUOTE (Abdulla M.A. @ May 24, 2010 02:28 pm)
Hello JoOngle,
I just want to ask you about your circuit, did you make the second 555 produce
different tunes??
or you used the counter to produce different tunes?
thankx

Abdulla

I used only ONE of the NE555 to produce various tones, as I said in the video.

How is that be possible?? did you use a varactor diode to change the capacitor
value?

Abdulla


--------------------
"A scientist can discover a new star, but he cannot make one. He would have to ask an engineer to do that."
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."
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draget
Posted: May 24, 2010 03:34 pm
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QUOTE (Abdulla M.A. @ May 24, 2010 10:54 pm)
How is that be possible?? did you use a varactor diode to change the capacitor
value?

Abdulla

You can use pin 5 of the 555 to modulate it.
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Abdullah M.A.
Posted: May 24, 2010 04:50 pm
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QUOTE (draget @ May 24, 2010 06:34 pm)
QUOTE (Abdulla M.A. @ May 24, 2010 10:54 pm)
How is that be possible?? did you use a varactor diode to change the capacitor
value?

Abdulla

You can use pin 5 of the 555 to modulate it.

I know, but this will give you two tunes!

Abdulla


--------------------
"A scientist can discover a new star, but he cannot make one. He would have to ask an engineer to do that."
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."
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JoOngle
Posted: May 24, 2010 06:56 pm
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QUOTE (Abdulla M.A. @ May 24, 2010 02:54 pm)
How is that be possible?? did you use a varactor diode to change the capacitor
value?

Abdulla

I see things trough a different filter, while you guys might be educated engineers, I don't follow datasheets & schematics 100% all the time, I experiment out of my own knowledge, I sometimes (more often that not) make my own rules when I design, I push the components to the limits, I use their "off-set" capabilities to the max rather than their specified data, this construction with 4 rising notes in a 100% reproducible succession is no different.

There's a 33 nF connected to earth and pin 6 of the Ne555, and a 15 nF connected from pin 6 to the Data output Qb of the 74LS163A Counter and a 470 k Resistor to Qc of the counter to pin 6 of the Ne555.

wink.gif

And - yes - it works.


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biocow
Posted: May 24, 2010 07:35 pm
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JoOngle, love your circuit. Only reason I didn't vote for your circuit is I voted for mine. But still sad my only vote is mine. Thought I'd at least get a couple. sad.gif


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I only run for 2 reasons. Away from danger and for the bus.



And I don't take the bus.
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Abdullah M.A.
Posted: May 24, 2010 07:46 pm
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QUOTE (JoOngle @ May 24, 2010 09:56 pm)
QUOTE (Abdulla M.A. @ May 24, 2010 02:54 pm)
How is that be possible?? did you use a varactor diode to change the capacitor
value?

Abdulla

I see things trough a different filter, while you guys might be educated engineers, I don't follow datasheets & schematics 100% all the time, I experiment out of my own knowledge, I sometimes (more often that not) make my own rules when I design, I push the components to the limits, I use their "off-set" capabilities to the max rather than their specified data, this construction with 4 rising notes in a 100% reproducible succession is no different.

There's a 33 nF connected to earth and pin 6 of the Ne555, and a 15 nF connected from pin 6 to the Data output Qb of the 74LS163A Counter and a 470 k Resistor to Qc of the counter to pin 6 of the Ne555.

wink.gif

And - yes - it works.

I just want to say thumbsup.gif
you got really good results, TRY AND ERROR.

Abdulla


--------------------
"A scientist can discover a new star, but he cannot make one. He would have to ask an engineer to do that."
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."
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a1transcriptions
Posted: October 23, 2013 12:29 pm
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QUOTE (JoOngle @ May 16, 2010 01:56 pm)
Welcome to our very first official Weekly Electronic Challenge, a challenge has been randomly selected from your very own suggestion thread in this forum, here are the rules:

Basic overall rules: (read the sticky)

Tune Generator.


Objective:

* Build a circuit that can output a tune through a speaker
* Tune itself can be stored any way you can think of but no flash/eeproms/etc.


Specific rules for this challenge:


* You may use any components, tubes too, but no fancy programmable IC's. A 555 timer is allowed and similar simple linear circuits. Digital too, but limited to logic-circuits like And/Or etc.
* Must be a proper reproducible tune, no random tones, etc.

You must be able to provide a proof of concept, a video of the circuit in action or an mp3 file and a picture. Schematic must be supplied with the entry if you can't show a video of it on your breadboard.

The challenge ends next Sunday, some time between Sunday & Monday (CET)

Post your results in THIS thread only! Not in the general forum or other forums, this is THE THREAD FOR EVERYONE PARTICIPATING, so POST HERE. smile.gif

Good luck & have fun.

Hi Buddy,

Tune recorder like that used for recording?





Thanks.
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