mcnobby:
Very cool Idea !!
If i had the time I would love to have a crack at this too
And for feedback... ? what if you hold it next to a Marshall stack ?Do you have a video of this working ?
Bahahaha, Marshall stack. I can't promise results but I can find one to stand next to and at least pretend that my ears are ringing with the battle cry of rock and roll!
Nah, no video, yet. It doesn't yet work. Your next quotes address some of my miscalculations. But you CAN watch a video of a similar (more expensive) project by clicking this next link: https://www.youtube.com/watch?v=s3dBox-LB7I
mcnobby:
I was wondering, I guess it mis-reads if you leave your first finger down and fret on the same sensor with another finger, thus lowering the resistance as there is two contacted areas ? yes ? (a bit like if you try and put two fingers on your laptop mouse pad, it kind of averages between the points)
I don't quite know if that's how it will work. I think it is supposed to read the first sensor distance it finds.
mcnobby:
I see you are using 3 x 7805 regulators for the strips (to protect them?) the input to the regs is 5V, but you are trying to pull 5v out of them. I think these regs require somewhat more than 5v input to give a stable 5vout (like 7v or something). I see what you are trying to do but wonder why you need 3 1A regs ?
If the overall resistance of the strip is 10k, the current flow will be <1mA, so you could easily run all three strips from one much smaller regulator.Also powering from USB may also have its voltage instability, I have measured some at 4.4V where 5V has been expected. Perhaps if you ran the board from 6V cellpack or a small power supply over 5V to the Vin/RAW pin of the micro board it may help to stabilise things up a bit plus give you the overhead Volts you need for your 5V regulation to the strips
That's probably why I'm not getting any readings from those strips! This could reduce the cost for the guitar and simplify the wiring job. Hmm, how do I calculate which regulator I should be using (like a 1mA regulator? Should I be using that?)
Man, I wish I didn't have to rely on cellpacks or power supplies. I owned a USB guitar that worked solely through USB. I wish this guitar could do the same.
Anyway, yeah, I feel like I'm really really close, here. So I'll need to...
- Replace the 3 regulators with 1 smaller regulator.
- Hook the new one up to all three strips
- Either add a supplemental power or figure out how to make USB only work.
--
Another problem I'm experiencing is on the software end. I'm trying to get these bytes to send to a virtual MIDI port (emulated over USB). I found the two pieces of software from the following link:
The software I'm using for virtual MIDI are here:
http://projectgus.github.io/hairless-midiserial/
And I can read the inputs through the Arduino IDE but I don't get similar results in the software. But maybe we'll figure this out after the hardware is done right.