Propeller based guitar amplifier

FredBlais

My friend and I are designing a tube guitar amplifier with digital effects. We use the propeller to control the effects processor, and to control a pedal.
Here is two of the three PCB, being soldered...

Stay tuned up for more details!

jazzed

FredBlais wrote: »

My friend and I are designing a tube guitar amplifier with digital effects. We use the propeller to control the effects processor, and to control a pedal.
Here is two of the three PCB, being soldered...

Stay tuned up for more details!

Sweet. Will you be sharing effects code?

StefanL38

Hi Fred,

have you ever noticed http://www.openstomp.com/frontpage/ ?

best regards
Stefan

Heater.

Heater likes this:)

Check out OpenStomp.

jazzed

OpenStomp is a nice idea. I'm proud of the subtle reference in Inspiration Strikes.
Eric's thread starts here. First post shows Howler, but Coyote-1 is the current product name.

I'd like to see what is possible with Fred's design.

JordanCClark

Dunno if any of you guys have seen this, but Eli Hughes had made an active pickup in a Freescale Make It competition.

http://www.youtube.com/watch?v=XhSo-udHuqM

FredBlais

Hi Jazzed, we are not sure at this moment if we're going to create our own effects or to use existing code. For now, we have a dedicated IC for the effects, see : http://www.spinsemi.com/products.html

Here what it sounds like : http://www.youtube.com/watch?v=mUDvg4qwoj0&feature=g-all-u
We bought the empty cabinet and speaker on the web. The front panel is made with http://www.frontpanelexpress.com/ Really fun to work with them, cheap, easy and look incredible for a quick prototype.

There is a LCD screen from uoled to control digital effects, thanks to the OBEX, the driver was already done I'll let you see what it look likes next week!

jazzed

FredBlais wrote: »

Hi Jazzed, we are not sure at this moment if we're going to create our own effects or to use existing code. For now, we have a dedicated IC for the effects, see : http://www.spinsemi.com/products.html ....

Nice effects spinsemi.com sounds like a good company name. Looking forward to see how you control the chip.

There's a guy here in the valley King Amplification ... they're a nice crew and offer vintage sound kits and classes. Not sure if they have any built-in effects. Got a nice stock of vacuum tubes though.

There are some cheap 1.8" LCD modules from Newhaven (< $12) ... I have hardware on my desk and I'm supposed to be writing a driver for it :< I have a driver for the Varitronix 1.5" parallel LCD, but sadly that is end of life now (was < $4.00 each).

OLED are better than LCD for power use of course. I'm interested in this CrystalFonts OLED module too, but don't have any experience with it yet.

Mickster

Although one of my many projects right now is to create a live rig that excludes traditional amps and drums in favor of V-drums (Roland), Guitar Rig (Native Instruments), Ableton Live, etc., all running on a mini ITX (with complete redundancy). It would be cool to put a 100% propeller-powered rig together, including the various synths and B3 emulators that are around....hmmm, just what I need, another distraction.


Mickster

FredBlais

Here are some other pictures!

I love my hydra for prototyping

FredBlais

And here is the screen, duct taped to the panel... lol

jazzed

Sweet Nice work Fred.

dgately

FredBlais wrote: »

Here are some other pictures!
I love my hydra for prototyping

Looks like an 18 Watt? (i.e. like a Marshall 1974)

Good luck and keep sending updates. I got started with MCUs with a hope of using them to "digitize" my tube amp work...

dgately

FredBlais

dgately wrote: »

Looks like an 18 Watt? (i.e. like a Marshall 1974)

The amplifier is a 50 Watts A/B Class

Fred

FredBlais

I was also working on a pedal board, that is connected to the amplifier. The two are synchronized and show the same effect being used.
http://www.youtube.com/watch?v=DPLAB8ihTjI&list=UU0n9rIda1jNIz4TLJs4844Q&index=1
The LCD is that one, with nice RGB backlight:
http://www.digikey.ca/product-detail/en/NHD-0216K1Z-NS(RGB)-FBW-REV1/NHD-0216K1Z-NS(RGB)-FBW-REV1-ND/2172436