Comments on: Spooky Arduino Projects #4 – Musical Arduino http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/ Random experiments, circuits, code, rapid prototyping, sometimes things to buy, and the odd tune by Tod E. Kurt. Sat, 14 Apr 2012 16:47:58 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: maax555 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-11/#comment-79563 maax555 Mon, 20 Feb 2012 12:53:32 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-79563 Sorry, also wanted to ask about latency as I would be using to connect into home studio for adding drums in real time. thanks Sorry, also wanted to ask about latency as I would be using to connect into home studio for adding drums in real time.

thanks

]]> By: maax555 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-11/#comment-79562 maax555 Mon, 20 Feb 2012 12:49:08 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-79562 Hi, a couple of things, 1) could i build this into a set of Guitar Hero Wii drums (i dont use them anymore) and simply use the pads as piezo's? 2) How would the same thing be achieved using the Uno R3 USB for midi out (and power in)? thanks maax Hi, a couple of things,
1) could i build this into a set of Guitar Hero Wii drums (i dont use them anymore) and simply use the pads as piezo’s?
2) How would the same thing be achieved using the Uno R3 USB for midi out (and power in)?

thanks maax

]]> By: Arduino midi e-drum | Linux: music, rt-kernel, bicycle and GPS http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-11/#comment-79561 Arduino midi e-drum | Linux: music, rt-kernel, bicycle and GPS Sun, 19 Feb 2012 11:38:23 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-79561 [...] piezos should be connected like shown in this schematic. It can be found here. Of course you should connect the piezos with the 48 inputs of the Mux Shield on top of the [...] [...] piezos should be connected like shown in this schematic. It can be found here. Of course you should connect the piezos with the 48 inputs of the Mux Shield on top of the [...]

]]> By: Guy http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-79471 Guy Sun, 08 Jan 2012 18:51:03 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-79471 Hi, I have followed this tutorial and im having a few issues, im new to arduino and the coding. I am trying to make a sound installation using pure data to output the received midi from my piezo's via arduino.. now I have it all working fine but... How can I send out all of my separate piezos to different channels? Im not using this in the context of a drum kit, I have 4 piezos mounted to a metal sheet and when water drops hit the sheet it creates sound in a synthesizer. I need a simple code that will read the piezos just as it does in this code, however I use a threshold of 20 because it seems to pick up the water drops better, and output the signal through the midi cable :) I have tried to figure out the coding but I'm having no luck whatsoever. Any help would be grate guys! thanks for this tutorial! Hi, I have followed this tutorial and im having a few issues, im new to arduino and the coding. I am trying to make a sound installation using pure data to output the received midi from my piezo’s via arduino.. now I have it all working fine but… How can I send out all of my separate piezos to different channels? Im not using this in the context of a drum kit, I have 4 piezos mounted to a metal sheet and when water drops hit the sheet it creates sound in a synthesizer. I need a simple code that will read the piezos just as it does in this code, however I use a threshold of 20 because it seems to pick up the water drops better, and output the signal through the midi cable :) I have tried to figure out the coding but I’m having no luck whatsoever. Any help would be grate guys! thanks for this tutorial!

]]> By: Footstep [Earthquake?] Detection | TATYANA'S COOKBOOK http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78424 Footstep [Earthquake?] Detection | TATYANA'S COOKBOOK Mon, 14 Nov 2011 07:26:07 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78424 [...] creator of this one claims to have been inspired by the same TodBot Midi Drum Kit and Sound Trigger we talked about in an earlier Post LD_AddCustomAttr("AdOpt", "1"); LD_AddCustomAttr("Origin", [...] [...] creator of this one claims to have been inspired by the same TodBot Midi Drum Kit and Sound Trigger we talked about in an earlier Post LD_AddCustomAttr("AdOpt", "1"); LD_AddCustomAttr("Origin", [...]

]]> By: TATYANA'S COOKBOOK http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78422 TATYANA'S COOKBOOK Mon, 14 Nov 2011 03:22:44 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78422 [...] It is an Arduino MIDI Drum Kit and Spooky Sound Trigger from TodBot.com [...] [...] It is an Arduino MIDI Drum Kit and Spooky Sound Trigger from TodBot.com [...]

]]> By: Arduino MIDI Drum .002 | datawench http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78290 Arduino MIDI Drum .002 | datawench Sun, 02 Oct 2011 17:48:31 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78290 [...] http://spikenzielabs.com/SpikenzieLabs/DrumKitKit.html http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/ http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Interfaces/ConvComp.html [...] [...] http://spikenzielabs.com/SpikenzieLabs/DrumKitKit.html http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/ http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Interfaces/ConvComp.html [...]

]]> By: Electronics mini projects http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78171 Electronics mini projects Sat, 10 Sep 2011 18:39:55 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78171 [...] Arduino MIDI interface (Arduino MIDI Drum Kit and Spooky Sound Trigger) [...] [...] Arduino MIDI interface (Arduino MIDI Drum Kit and Spooky Sound Trigger) [...]

]]> By: fynsta http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78122 fynsta Sat, 20 Aug 2011 23:47:41 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78122 Nice tutorial can't wait to start mine dbfreq, i'm doing the same thing, for I only need one trigger but i'm pretty new to coding, would you mind sharing your code for this one so I can be sure it'll work, if you don't mind? thanks!!! Nice tutorial can’t wait to start mine

dbfreq, i’m doing the same thing, for I only need one trigger
but i’m pretty new to coding, would you mind sharing your code for this one
so I can be sure it’ll work, if you don’t mind?

thanks!!!

]]> By: Reggie http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-78015 Reggie Sat, 23 Jul 2011 05:41:21 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-78015 First of all excuse my poor English ... This software can be installed on an Arduino Mega? All analog inputs would work? Data would be sent THROUGH USB cable? First of all excuse my poor English … This software can be installed on an Arduino Mega? All analog inputs would work? Data would be sent THROUGH USB cable?

]]> By: Jenna http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-77983 Jenna Fri, 15 Jul 2011 14:32:13 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-77983 Hello Caesar, I used the 4051 multiplexer to make a 8 note midi xylophone. I initially had problems getting the multiplexer to work. Every time I hit a single piezo, at least three other sensors would go off. It was as if all of the input pins on one side of the multiplexer were soldered together. I wrote a program to read and print the voltage at each of the 4051 input pins and found that hitting a single piezo that was completely isolated from the others would result in high voltage readings from multiple pins. I quadruple checked my code and circuit and couldn't find any problems. Does this sound like your problem? I was using the # 0,1, and 2 digital pins on the arduino as select pins, and for some reason that was the source of the problem (as far as I can tell). Using the digital pins 2,3, and 4 prevented the "voltage bleed." Anyone have any idea why, or does that sound like bogus? I would also check to make sure that the resistors you're using with each piezo have the same resistance. Hello Caesar,

I used the 4051 multiplexer to make a 8 note midi xylophone. I initially had problems getting the multiplexer to work. Every time I hit a single piezo, at least three other sensors would go off. It was as if all of the input pins on one side of the multiplexer were soldered together. I wrote a program to read and print the voltage at each of the 4051 input pins and found that hitting a single piezo that was completely isolated from the others would result in high voltage readings from multiple pins. I quadruple checked my code and circuit and couldn’t find any problems. Does this sound like your problem?

I was using the # 0,1, and 2 digital pins on the arduino as select pins, and for some reason that was the source of the problem (as far as I can tell). Using the digital pins 2,3, and 4 prevented the “voltage bleed.”

Anyone have any idea why, or does that sound like bogus?

I would also check to make sure that the resistors you’re using with each piezo have the same resistance.

]]> By: Caesar http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-77950 Caesar Fri, 08 Jul 2011 23:22:08 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-77950 Hello Tod, this project served as my introdution to mico controllers. I've build a version using 2 or more multiplexers. My issue is that I am getting multiple notes on one sensor. I've seen an earlier comment about the mux sheild which is an option which is another option I had due to the number of sensors I need. However I believe I have the multiplexers wired and programed correctly. I've also seen concerns about impedance matching could this be the reason for this abnormal behavior ? Any suggestion ? Thank you in advance Pitchoilcan Hello Tod, this project served as my introdution to mico controllers. I’ve build a version using 2 or more multiplexers. My issue is that I am getting multiple notes on one sensor. I’ve seen an earlier comment about the mux sheild which is an option which is another option I had due to the number of sensors I need. However I believe I have the multiplexers wired and programed correctly. I’ve also seen concerns about impedance matching could this be the reason for this abnormal behavior ? Any suggestion ? Thank you in advance
Pitchoilcan

]]> By: todbot http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-77137 todbot Tue, 07 Jun 2011 16:01:33 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-77137 Joey, If you use the Arduino "internal pull-up resistor" trick as in the sketch, you don't need real resistors. SleepingRico, You can totally connect standard digital drum pads to this circuit and it should work. I've not done it, but I've heard of people doing it. The pads supposedly just have a piezo element in them. dbfreq, Yes, the timing problem makes the responsiveness not very good. To make it better, you need to get rid of the spinloops (those "while(analogRead())") and any "delay()" functions. Check out the "<a href="http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay" rel="nofollow">BlinkWithoutDelay</a>" tutorial for the basic concept of doing that. Joey,
If you use the Arduino “internal pull-up resistor” trick as in the sketch, you don’t need real resistors.

SleepingRico,
You can totally connect standard digital drum pads to this circuit and it should work. I’ve not done it, but I’ve heard of people doing it. The pads supposedly just have a piezo element in them.

dbfreq,
Yes, the timing problem makes the responsiveness not very good. To make it better, you need to get rid of the spinloops (those “while(analogRead())”) and any “delay()” functions. Check out the “BlinkWithoutDelay” tutorial for the basic concept of doing that.

]]> By: dbfreq http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-77119 dbfreq Mon, 06 Jun 2011 02:34:38 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-77119 Hey there, how are ya? I'm working on a midi drum kit using a converted remo practice pad fitted with a piezo pickup and an arduino - with its midi out going through a midi to usb converter (the kind you can buy for about $5, very generic). I've taken your code and stripped it back for just a single piezo - no switches or anything extra, just to experiment.. I'm wondering about the velocity sensitive part of your code.. and the time it ends up sucking up between midi events. Is there anyway to get the whole thing to work faster, say to allow for flams? Hey there, how are ya? I’m working on a midi drum kit using a converted remo practice pad fitted with a piezo pickup and an arduino – with its midi out going through a midi to usb converter (the kind you can buy for about $5, very generic). I’ve taken your code and stripped it back for just a single piezo – no switches or anything extra, just to experiment..

I’m wondering about the velocity sensitive part of your code.. and the time it ends up sucking up between midi events. Is there anyway to get the whole thing to work faster, say to allow for flams?

]]> By: SleepingRico http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/comment-page-10/#comment-77103 SleepingRico Tue, 24 May 2011 02:13:12 +0000 http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/#comment-77103 Hi there, Can the piezos you connected to the Arduino board be replaced by standard audio jack inputs? I'm planning to connect a kick drum pad to the board, thanks to those inputs, in order to convert the audio signal into MIDI data, could this work? Cheers Rico Hi there,

Can the piezos you connected to the Arduino board be replaced by standard audio jack inputs? I’m planning to connect a kick drum pad to the board, thanks to those inputs, in order to convert the audio signal into MIDI data, could this work?

Cheers

Rico

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