Forum FV-1 project

[mathewglenn]

As a long time lurker, I just wanted to speak up and say great work.  I am following this with interest.

Pull up a chair and sit in, everyone is welcome at this party

Ok, sit on too. But first I need: Fresh pots! http://www.youtube.com/watch?v=fhdCslFcKFU

Awesome! Unfortunately, I know way more about coffee than I do about DSP, so mostly I will be sitting back with a fresh pot trying to follow along.

[Fuzz Aldryn]

As a long time lurker, I just wanted to speak up and say great work.  I am following this with interest.

Pull up a chair and sit in, everyone is welcome at this party

OK, sit on too. But first I need: Fresh pots! http://www.youtube.com/watch?v=fhdCslFcKFU

Awesome! Unfortunately, I know way more about coffee than I do about DSP, so mostly I will be sitting back with a fresh pot trying to follow along.

Me too. I'm watching this quiet excited - not due to the coffee of course.

[jkokura]

Bump for an update?

Jacob

[culturejam]

I also remain excited. 

[puretube]

J. Orman also was going to dissect a Holy Stain and mod it ( see link in reply#4), a few years ago - maybe you can hook up...

[Ice-9]

Yeah sorry guys, I've been a bit busy at work for the last 2 weeks and have not had any internet at home, only available net connection was from work so couldn't post much on anything.

I have been re designing the in and output sections trying to get the sound of the buffer signals as exact as possible to the bypassed sound in tone and volume. Revised circuit will be done soon and I hope to do both SMD and a through hole PCB this time.

[Fuzz Aldryn]

Good news! Realy looking forward to this.

[Ice-9]

J. Orman also was going to dissect a Holy Stain and mod it ( see link in reply#4), a few years ago - maybe you can hook up...

I did a few mods to add the chorus flanger extra effects to "Holy Stain" and also added the extra control pots. I will post these in a seperate thread today in case anyone here is inerested.

[dellamorte]

here is my take in the fv-1
- mostly thru hole
-klon style buffers
-external eeprom
-programming port
-connection for 16 position rotary encoder (GRAYHILL 25LB22-H http://au.element14.com/jsp/search/productdetail.jsp?SKU=1144753
-should fit in a 1590BB
pcb transfer http://www.mediafire.com/file/o07py4ch966r5ty/fvthru1v1.pdf
eagle files http://www.mediafire.com/file/sw0j4u36j0pgq0m/eagle.rar

[Govmnt_Lacky]

here is my take in the fv-1
- mostly thru hole
-klon style buffers
-external eeprom
-programming port
-connection for 16 position rotary encoder (GRAYHILL 25LB22-H http://au.element14.com/jsp/search/productdetail.jsp?SKU=1144753
-should fit in a 1590BB
pcb transfer http://www.mediafire.com/file/o07py4ch966r5ty/fvthru1v1.pdf
eagle files http://www.mediafire.com/file/sw0j4u36j0pgq0m/eagle.rar

Sweet looking project dellamorte.

Any reason that you went with 2 x TL072s instead of just a single TL074?

[thedefog]

Probably because a single TL074 is more difficult to work with than two separate TL072s. You end up with a bunch of traces running all over the place and jumpers. I ended up doing something similar recently in a layout I made.

Awesome project! I've been weighing my options with DSP platforms, and the FV-1 seems like the way to go.

[dellamorte]

Probably because a single TL074 is more difficult to work with than two separate TL072s. You end up with a bunch of traces running all over the place and jumpers.

what he said
there is 1 jumper on the board too (from pin 2 of the left TL072 to the + side of 1 uf  near pin 5) also the gnd's of the pots are tied together off board

[thedefog]

For someone that has little to zero knowledge of Assembly and DSP programming, but knows an okay amount of C, how difficult would it be to get into the FV-1?

[Govmnt_Lacky]

Probably because a single TL074 is more difficult to work with than two separate TL072s. You end up with a bunch of traces running all over the place and jumpers.

what he said
there is 1 jumper on the board too (from pin 2 of the left TL072 to the + side of 1 uf  near pin 5) also the gnd's of the pots are tied together off board

I got it  Sounds like you thought that one out.

Is there any plan to do a layout that accomidates a PDIP eeprom?

[dellamorte]

For someone that has little to zero knowledge of Assembly and DSP programming, but knows an okay amount of C, how difficult would it be to get into the FV-1?

have a look thru their site/knowledge base/forums http://www.spinsemi.com/ there are lots of code examples there, ill be posting mine in the forums as i get into it but dont hold your breath.

[jkokura]

Hey Mick - whatever happened with this? I haven't been around for a while...

Jacob

[Ice-9]

Hey Mick - whatever happened with this? I haven't been around for a while...

Jacob

Hi Jacob,  It ended up at the bottom of a pile of things to do and forgotten. OOps !! 

The main effect is really finished, it's just the addons like card reader, different switching options etc that could be developed further. If you have any ideas on what you would like worked on let me know.

I do believe that first I should maybe do a through hole layout to make it more accessable to most builders, alternatively Delamorte has posted a layout above.

[peterv999]

Just a 'final'  update from me to announce the official availability of my eTap2hw DSP & Analog based design as being ready, fully tested and available.

The daugherboard  type FV-1 SKRM with my vintage echo's DSP code  is presently available as partnumber SKRM-C8-ETAP2 from OCT in the USA. The pricing is kept the same as the other SKRM versions presently listed on the OCT-Distribution.com website.




 

A vendor here in the Netherlands, "Newtone-Winkel " with a web store  http://www.newtone-online.nl ,  provides the total kit under the following two (not yet published)  ordernumbers:

(1) BPOSFV1 this is the motherboard with components. 33 euro

Parts Set for the main board of the FV1-SKRM project www.echotapper.nl See: http://www.echotapper.nl/wp/?p=151

The parts set contains all the parts, required to populate the main board, namely:

 - The PCB itself
- The DC Bus
- The Elco's and film and ceramic capacitors
- The white LEDs with green and red fresnel lenses
 - The diode and the IC's complete with sockets
- The resistors
- The JFETs and voltage regulator (with heatsink)
- The spacers for the board – The 12V terminal
Please note: The parts set does not contain wire, potentiometers, switch, knobs, enclosure.

(2) BPOSSKRM this the   SKRM-C8-ETAP2  unit. 32euro

Obviously, the BPOSFV1 kit could be ordered separately there and the SKRM-C8-ETAP2 unit at OCT or another unit with reverbs by OCT as the eTap2hw design is a universal two channel design capable in both mono and stereo solutions. The eTap2hw with my emulations is configured as a mono device with two outputs being output1 dry+wet and output2 wet.

Please note that there is no uplift to the component cost as my effort designing/developing/testing/patch developent was provided for free as a 'labour of love' activity.So, you're just paying the real cost of parts and shipment not a penny more!

There are  8 emulations are available:

Meazzi Echomatic-I model 'J' 5 different modes ABC(D)EF
Meazzi Echomatic-I model 'F'  5 different modes ABC(D)EF
Meazzi Echomatic-I model 'F' Special 5 different modes ABC(D)EF
Meazzi Echomatic-II Bank5 different patches pre-programmed
Vox LongTom Classic 5 different patches pre-programmed
Meazzi Echomatic-II Classic  heads separately controlled
Roland model 301 Mode 5Varispeed
Reverb and/or TremoloReverbTrem/FreqTrem/Depth
Note: modes ABC(D)EF modes as per Meazzi device but 'D' not required

All emu's are with tape/disc artifacts like saturation/noise/wow/flutter. Head timings and amplitudes  are exact as per known published timings

On my blog is detailed information and some sample sounds. This motherboard is designed with two identical channels so it also accepts other SKRM modules available through OCT.

Piet

[peterv999]

The blog is www.echotapper.nl
Cheers