Propeller based guitar amplifier

Comments

• jazzed Posts: 11,803

  2012-11-07 13:24 edited 2012-11-07 13:24

  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 Posts: 2,292

  2012-11-07 13:44 edited 2012-11-07 13:44

  Hi Fred,
  
  have you ever noticed http://www.openstomp.com/frontpage/ ?
  
  best regards
  Stefan
• Heater. Posts: 21,230

  2012-11-07 14:14 edited 2012-11-07 14:14

  Heater likes this:)
  
  Check out OpenStomp.
• jazzed Posts: 11,803

  2012-11-07 14:36 edited 2012-11-07 14:36

  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 Posts: 198

  2012-11-08 04:02 edited 2012-11-08 04:02

  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 Posts: 380

  2012-11-08 16:08 edited 2012-11-08 16:08

  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 Posts: 11,803

  2012-11-08 19:36 edited 2012-11-08 19:36

  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 Posts: 2,874

  2012-11-09 04:19 edited 2012-11-09 04:19

  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 Posts: 380

  2012-11-21 12:57 edited 2012-11-21 12:57

  Here are some other pictures!
  
  

  

  
  
  

  

  
  
  

  

  
  
  I love my hydra for prototyping

  

  

  IMAG0409.jpg

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  IMAG0407.jpg

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  IMAG0408.jpg

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  IMAG0408.jpg 200.9K
• FredBlais Posts: 380

  2012-11-21 13:35 edited 2012-11-21 13:35

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

  

  

  

  IMAG0410.jpg

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• jazzed Posts: 11,803

  2012-11-21 13:46 edited 2012-11-21 13:46

  Sweet Nice work Fred.
• dgately Posts: 1,639

  2012-11-21 19:44 edited 2012-11-21 19:44

  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 Posts: 380

  2012-11-22 12:19 edited 2012-11-22 12:19

  dgately wrote: »

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

  
  The amplifier is a 50 Watts A/B Class
  
  Fred
• FredBlais Posts: 380

  2012-12-05 13:54 edited 2012-12-05 13:54

  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