madbeanpedals::forum

General => Open Discussion => Topic started by: Leevibe on January 02, 2015, 01:49:55 AM

Title: ...and down the rabbit hole we go
Post by: Leevibe on January 02, 2015, 01:49:55 AM
I got an arduino uno as a late Christmas present. Yay! Now I have a whole bunch of learning to do. At the very least I want to be able to make a PWM motor control and build a pickup winder.

Other ideas?


Title: Re: ...and down the rabbit hole we go
Post by: alanp on January 02, 2015, 02:06:14 AM
A robot to play guitar?
Title: Re: ...and down the rabbit hole we go
Post by: sturgeo on January 02, 2015, 09:39:57 AM
Program ATtinys for soft touch relay boards :)
Title: Re: ...and down the rabbit hole we go
Post by: juansolo on January 02, 2015, 12:00:29 PM
An AI to realise that humans are a virus that needs to be irradicated? :o
Title: Re: ...and down the rabbit hole we go
Post by: Jopn on January 02, 2015, 01:47:05 PM
I keep meaning to get around to mine, although my arduino is built on vero with parts from Tayda...

My plan was to try to do a guitar tuner.  I think there's a project or two out there for that.
Title: Re: ...and down the rabbit hole we go
Post by: RobA on January 02, 2015, 02:39:38 PM
Project 1: Make LED's blink.
Project 2: Make LED's blink somehow responding to switches and pots.
Project 3: Experiment randomly.
Project 4: Learn to replace AT chip blown up in Project 3.
...

Well, that was my path anyway ;D. I think almost everyone starts off with 1 and 2.

There are tons of robotics projects out there. I talked to someone the other day that was programming them to control the temperature of their 3D printer.

My son's looking at putting together this project to do head tracking for video games that looks cool. (It uses the small Arduino boards, but they are basically the same thing.)

Specifically for music related stuff, there's a MIDI shield available that you can use to make a MIDI processor or things like MIDI to CV. You can breadboard it yourself pretty easily too and Sparkfun has the schematics available for almost every shield they sell.

They are good for making sequencers that can control analog stuff too.
Title: Re: ...and down the rabbit hole we go
Post by: Leevibe on January 02, 2015, 02:51:19 PM
Quote from: juansolo on January 02, 2015, 12:00:29 PM
An AI to realise that humans are a virus that needs to be irradicated? :o

Just bought my wife a roomba. It seems to have the self awareness thing figured out


Quote from: Jopn on January 02, 2015, 01:47:05 PM
I keep meaning to get around to mine, although my arduino is built on vero with parts from Tayda...


Sounds like you're trying to build a battle droid.
Title: Re: ...and down the rabbit hole we go
Post by: mgwhit on January 08, 2015, 04:02:46 PM
Quote from: sturgeo on January 02, 2015, 09:39:57 AM
Program ATtinys for soft touch relay boards :)

Yup.  I just ordered an Uno with a protoshield and some ATtiny85s to play around with exactly this.
Title: Re: ...and down the rabbit hole we go
Post by: RobA on January 08, 2015, 04:46:15 PM
Quote from: mgwhit on January 08, 2015, 04:02:46 PM
Quote from: sturgeo on January 02, 2015, 09:39:57 AM
Program ATtinys for soft touch relay boards :)

Yup.  I just ordered an Uno with a protoshield and some ATtiny85s to play around with exactly this.
I've got a schematic and software around somewhere where I did this with an 85 and a multi one with the 2313. My main goal was to integrate with MIDI controllers, so I haven't finished the boards yet, but if you run in to sticking points, I can dig up the schematics. One thing I found was that it was much more reliable to use a Schmitt trigger to do the debounce than to do it in software. You can get little tiny SOT Schmitt trigger IC's to use too that take up almost no board space.
Title: Re: ...and down the rabbit hole we go
Post by: Leevibe on January 08, 2015, 07:56:31 PM
So I fired it up for the first time last night. I did the obligatory LED blink but got sidetracked and ended up making a morse code message to video for a friend instead of moving on to something useful. It was fun to get it working at least.
Title: Re: ...and down the rabbit hole we go
Post by: mgwhit on January 09, 2015, 12:53:53 PM
Quote from: RobA on January 08, 2015, 04:46:15 PM
I've got a schematic and software around somewhere where I did this with an 85 and a multi one with the 2313. My main goal was to integrate with MIDI controllers, so I haven't finished the boards yet, but if you run in to sticking points, I can dig up the schematics. One thing I found was that it was much more reliable to use a Schmitt trigger to do the debounce than to do it in software. You can get little tiny SOT Schmitt trigger IC's to use too that take up almost no board space.

Thanks for the tip!   But now I've gotta learn what a Schmitt trigger is....  It's funny, I think half the questions on the Arduino forums are about button presses -- and nobody does anything the exact same way!

Quote from: Leevibe on January 08, 2015, 07:56:31 PM
So I fired it up for the first time last night. I did the obligatory LED blink but got sidetracked and ended up making a morse code message to video for a friend instead of moving on to something useful. It was fun to get it working at least.

You probably learned something, though, and that in itself is useful. Keep having fun!
Title: Re: ...and down the rabbit hole we go
Post by: mgwhit on January 11, 2015, 06:24:23 AM
Mine showed up in the mail unexpectedly this morning.  First Class USPS in less than 48 hours, not bad!

Lee, if you haven't checked out Jeremy Blum's video tutorials yet, do yourself a favor.  They're the best I've seen so far.  His tutorial on hardware debounce with Schmitt triggers (thanks, Rob, for that tip) is excellent.

Title: Re: ...and down the rabbit hole we go
Post by: mgwhit on January 14, 2015, 04:07:06 AM
Three-mode dual-effect switching prototype:

(http://matthewwhitworth.com/wordpress/wp-content/uploads/2015/01/arduino-dual-switch.jpg)

Gonna try to move this onto an ATtiny85 tomorrow.
Title: Re: ...and down the rabbit hole we go
Post by: Leevibe on January 14, 2015, 04:46:58 AM
Quote from: mgwhit on January 14, 2015, 04:07:06 AM
Three-mode dual-effect switching prototype:

(http://matthewwhitworth.com/wordpress/wp-content/uploads/2015/01/arduino-dual-switch.jpg)

Gonna try to move this onto an ATtiny85 tomorrow.

Atta boy! That's the kind of stuff I want to get into.