Comments on: Cheap Sound Sensor for AVR http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/ Alex' blog Wed, 10 Mar 2010 23:29:18 +0100 http://wordpress.org/?v=2.8.6 hourly 1 By: teguhginanjar http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-97978 teguhginanjar Wed, 10 Mar 2010 11:25:14 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-97978 thank u.. i was make it, it works.. thank u..
i was make it,
it works..

]]> By: James http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-87320 James Tue, 13 Oct 2009 13:16:35 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-87320 Hi, I bought a sound sensor which was attached to 2 neon light tubes. There is a transformer circuit just before the input to the lights. I think I had somehow damaged part of the circuit when I was trying to replace the neon light with LEDs. Is there anyway I am able to remove the transformer circuit? Hi, I bought a sound sensor which was attached to 2 neon light tubes. There is a transformer circuit just before the input to the lights. I think I had somehow damaged part of the circuit when I was trying to replace the neon light with LEDs. Is there anyway I am able to remove the transformer circuit?

]]> By: Alex http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-86133 Alex Sat, 26 Sep 2009 07:09:14 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-86133 Hi Josh, this is a very limitted amplifier. If I remember it correctly, I had values around 150, so maybe there is an error in your circuit. If you want a circuit, that is more sensitive, you have to look for a more complete amplifier circuit, e.g. this one, using a piezo: http://www.nerdkits.com/videos/sound_meter/ Cheers, Alex Hi Josh,
this is a very limitted amplifier.
If I remember it correctly, I had values around 150, so maybe there is an error in your circuit.
If you want a circuit, that is more sensitive, you have to look for a more complete amplifier circuit, e.g. this one, using a piezo: http://www.nerdkits.com/videos/sound_meter/
Cheers,
Alex

]]> By: Josh http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-86110 Josh Fri, 25 Sep 2009 23:08:01 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-86110 Hi, I just built a copy of this circuit and whilst it appears to amplify the mic, it doesn't give anywhere near the kind of response yours does in the video. I'm using the 2N3904 and it gives me an ADC value of around 800 (using 10-bit mode). If i blow on the mic the value changes (so it's definitely recieving input) but that implies it's only responding to massive levels of noise. Reckon the microphone is narked or have i just built the circuit incorrectly..? What kind of ADC result do you get from your mic if you talk into it? Hi,

I just built a copy of this circuit and whilst it appears to amplify the mic, it doesn’t give anywhere near the kind of response yours does in the video.

I’m using the 2N3904 and it gives me an ADC value of around 800 (using 10-bit mode). If i blow on the mic the value changes (so it’s definitely recieving input) but that implies it’s only responding to massive levels of noise.

Reckon the microphone is narked or have i just built the circuit incorrectly..?

What kind of ADC result do you get from your mic if you talk into it?

]]> By: Alex http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-82030 Alex Wed, 22 Jul 2009 21:36:52 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-82030 These are part of the avr-gcc toolchain. These are part of the avr-gcc toolchain.

]]> By: Lee http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-82028 Lee Wed, 22 Jul 2009 21:00:05 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-82028 I was looking at your code and was curious on how the .h file look like (avr/io, util/delay, and inttypes) I was looking at your code and was curious on how the .h file look like (avr/io, util/delay, and inttypes)

]]> By: Bogdan http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-74940 Bogdan Thu, 23 Apr 2009 18:25:43 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-74940 i am using the MCE-100 microphone... i am using the MCE-100 microphone…

]]> By: Alex http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-74807 Alex Wed, 22 Apr 2009 14:19:00 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-74807 The ADC measures the voltage on the pin and converts it to a digital value. The range is 10 bit, 0 to 1023 for 0 V to 5 V, if you use 5 Volt VCC. If you want to measure decibels, that would depend on your microphone, how much voltage it puts out for a given decibel value. The ADC measures the voltage on the pin and converts it to a digital value. The range is 10 bit, 0 to 1023 for 0 V to 5 V, if you use 5 Volt VCC. If you want to measure decibels, that would depend on your microphone, how much voltage it puts out for a given decibel value.

]]> By: Bogdan http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-74794 Bogdan Wed, 22 Apr 2009 12:34:36 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-74794 I want to measure the output of the microphone. What does the input read on the ADC represents? Decibels? A digital representation of the analog input with no measuring unit? I need to measure it in a international sistem unit, for example decibels, or something else. Can u please explain how can i do that? What to do with the ADC input? I want to measure the output of the microphone. What does the input read on the ADC represents? Decibels? A digital representation of the analog input with no measuring unit? I need to measure it in a international sistem unit, for example decibels, or something else. Can u please explain how can i do that? What to do with the ADC input?

]]> By: QuantumKate http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/comment-page-1/#comment-70770 QuantumKate Fri, 03 Apr 2009 18:10:37 +0000 http://tinkerlog.com/2007/05/20/cheap-sound-sensor-for-avr/#comment-70770 Ok folk. New problem. Does anyone have any idea how to make this, only a lot smaller. (Small enough to fit inside 3/4" pvc pipe). Any suggestions? Ok folk. New problem. Does anyone have any idea how to make this, only a lot smaller. (Small enough to fit inside 3/4″ pvc pipe). Any suggestions?

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