Catalinbread Echorec - Pic and schematic

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Re: Catalinbread Echorec - Pic and schematic

Postby Ice-9 » 05 Mar 2013, 19:36

coldcraft wrote:
loylo wrote:
Ice-9 wrote:@mrkaploca It's not possible to read protect the 24lc32a Eeproms, but reading the code from an Eeprom is of no use for study, only useful if you just want to flash it to another pedal.

I disagree. Reading some codes could be very instructive. For sure, you "can" learn to code a basic digital delay or a generic digital filter by yourself, given the necessary will. But Coding a "analog-like" filter needs advanced skills that you can learn from developped codes and algorithms. I have an elektor book about DSP with loads of very instructive examples.
I think that reading codes is as stimulating as deciphering analog circuits.

That said, I repeat that I respect your decision to not reveal the Echorec code.


I think ICE-9 means that its not possible to "read" (as in "extract") the code from an EEPROM back to the programming language on the computer, but it is possible to copy from one EEPROM to another. Correct me if I'm wrong.


Correct coldcraft, you can indeed read and use/copy the eeprom code but as a learning tool it is useless, as it is a compiled hex and no information is available to see how the assembly code works.

I'm sure there are clever people out there that can reverse the compiled code back to asm but thats not me.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: Catalinbread Echorec - Pic and schematic

Postby loylo » 05 Mar 2013, 22:53

Oups, Im confused! Sorry for my misunderstanding! :oops: :mrgreen:
Then you're 100% right, Ice-9!
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Re: Catalinbread Echorec - Pic and schematic

Postby micromegas » 05 Jun 2013, 21:09

loylo wrote:I have an elektor book about DSP with loads of very instructive examples.
I think that reading codes is as stimulating as deciphering analog circuits.


may I ask what book is that?
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Re: Catalinbread Echorec - Pic and schematic

Postby loylo » 27 Jun 2013, 10:10

Sorry for the late answer.

It is this book:
http://www.elektor.fr/products/books/au ... 2601.lynkx

But I don't know if it has been translated...
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Re: Catalinbread Echorec - Pic and schematic

Postby devastator » 27 Jun 2013, 11:50

loylo wrote:Sorry for the late answer.

It is this book:
http://www.elektor.fr/products/books/au ... 2601.lynkx

But I don't know if it has been translated...


I was thinking about getting a DSP/µC book , is it good ?
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Re: Catalinbread Echorec - Pic and schematic

Postby loylo » 28 Jun 2013, 08:47

That's the book I've recommended to you on g.com :wink:
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Re: Catalinbread Echorec - Pic and schematic

Postby ilcaccillo » 14 Jan 2017, 06:33

I really like the sound of this pedal but having tap tempo is a must for my needs so unfortunately although I like the sound I can't use it.
I know a lot of people that don't have any use for a tap tempo in a delay pedal, and I understand that but there are the same amount of people that find it useful or really need it to sync with the songs. It depends on particular needs and uses.

I have seen a lot of other people asking for the tap tempo feature in this pedal but the manufacturer refuses to add that feature in new versions with the argument of "Tape Delays don't have tap tempo".

Would changing the code be the only way of achieving a tap tempo control in this unit?

Thanks

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Re: Catalinbread Echorec - Pic and schematic

Postby captain_tango » 13 Jun 2018, 20:26

Sorry for re-surfacing this, but I'm really interested in the BJT preamp and mixer situation that Catalinbread has been using.
I want to get into the FV-1, but I feel like playing around with a bit more of a crude BJT preamp could be more fun than a stable and obvious op-amp one...
Does anyone still have the first draft or any draft schematic? I don't need spot on repliction, just general pointers, really!

Thanks!
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