albedozero

It isn't really a trick - the diode and resistor in the step 3 schematic create a specific voltage drop that the keytar's electronics expect from a MIDI interface. It's not searching for some sort of digital handshake or something that you could bypass - it's just a matter of having the right voltages/loads on each pin. If the WIDI master isn't providing them, there might be something wrong with it? I assume you've tried using the WIDI dongle on a different keyboard or just using an actual MIDI cable to check that the keytar's MIDI out is working?

The RAW pin on the Arduino Mini regulates 5-12V to 3.3V that the Mini and the Mini USB Host Shield both use. I'm showing this connection in my schematic because I wanted to add my own USB-B jack for power, rather than use the Mini's flimsy micro-usb jack. You'll power your UNO using the built-in USB jack or the DC barrel jack, so you can ignore that connection.

Cool! Your wind chimes look much nicer than mine. How do you arrive at the 22.42% value? Thanks for the tip!

Great! The default web file manager login is `squishbox` and the password is `geekfunklabs`. The web interface uses tinyfilemanager - you can check out their github for info on how to change passwords, tweak settings, etc.

Hi Roberto - The easiest way to see what error the script is encountering is to run `sudo python3 squishbox.py` at the command line - then I can help more. If you're trying to use the SD card image again, make sure you've obtained my latest SquishBox image from Geek Funk Labs.As to your earlier question where you were trying to get the USB sound card to work with your manual installation - I've been adding to the FluidPatcher wiki to provide some Raspberry Pi setup notes that might help. You could check out the Audio section there. There is also a lot of info online for getting a USB sound card to work on Raspberry Pi - that might give you some other things to try. I find that the "right way" to get a USB sound card working seems to change a lot over time and depending on your s…

Hi Roberto - The easiest way to see what error the script is encountering is to run `sudo python3 squishbox.py` at the command line - then I can help more. If you're trying to use the SD card image again, make sure you've obtained my latest SquishBox image from Geek Funk Labs.As to your earlier question where you were trying to get the USB sound card to work with your manual installation - I've been adding to the FluidPatcher wiki to provide some Raspberry Pi setup notes that might help. You could check out the Audio section there. There is also a lot of info online for getting a USB sound card to work on Raspberry Pi - that might give you some other things to try. I find that the "right way" to get a USB sound card working seems to change a lot over time and depending on your specific setup.

That should be the correct wiring for the software - and if your soundcard is working in VLC, then FluidSynth should be able to find it as well. If the software works after my last reply but you hear no sound, try adding the following line to SquishBox/squishboxconf.yaml, right under the "fluidsettings:" line (the two spaces at the beginning are necessary): audio.alsa.device: hw:0

Hi Roberto,You just need to install some extra libraries that aren't included in Python by default. At the command line, typesudo pip3 install oyaml mido RPLCD RPi.GPIOThat should install everything you need that you don't already have. You don't need to start the stompboxpi.py script on your own - squishbox.py calls it by itself.

Hi Roberto - thanks for trying out the project!1) I'm guessing you mean you used the SD card image provided in the release of FluidPatcher. Depending on what you used for a sound card and how you wired your LCD you may need to make some software tweaks. I'm slowly completing the wiki for FluidPatcher, which should help, but if you feel up to it you could look at the stompboxpi.py script and make the necessary changes. You may also need to modify /boot/config.txt depending on your sound card.2+3) If you copy+paste the whole error message (i.e with line number, etc.) I might be able to provide more insight here.FluidPatcher is designed to work with Python 3 so you definitely do not want to downgrade. On Raspbian you want to specify `python3` at the command line to insure you're not trying t…

Hi Roberto - thanks for trying out the project!1) I'm guessing you mean you used the SD card image provided in the release of FluidPatcher. Depending on what you used for a sound card and how you wired your LCD you may need to make some software tweaks. I'm slowly completing the wiki for FluidPatcher, which should help, but if you feel up to it you could look at the stompboxpi.py script and make the necessary changes. You may also need to modify /boot/config.txt depending on your sound card.2+3) If you copy+paste the whole error message (i.e with line number, etc.) I might be able to provide more insight here.FluidPatcher is designed to work with Python 3 so you definitely do not want to downgrade. On Raspbian you want to specify `python3` at the command line to insure you're not trying to run the scripts with Python 2.7, since both versions are by default installed.

Cool!

It would be a little different since from what I understand the rock band guitar doesn't have a MIDI output for you to steal MIDI signals from. Probably the easiest, cheapest way would be to wire the buttons on the guitar neck to the inputs of a microcontroller such as a Teensy LC or Arduino Pro Mini, which you would then program to send the appropriate MIDI signals to the XBee via its serial port. The receiver could be constructed in exactly the same way.

Awesome! I wanted to do exactly that, and with your comment I now realize it would just involve moving some wires around. Go internet!

Totally just bought a USB host chip off HT for version 2 of this build - seems there's always a better +/- cheaper way

Fair point - I will respond with an image:

But seriously - my 'ible is far from the first of this kind. Someone should whip up a cheaper build - if we all work together we can someday beat Amazon.