Barracuda Legend Kit Problems

[BKY1337]

This is another one with tantalum capacitors. Not 1.3. Mine is from the full construction thread here in the forum Alex and Ap Rev 2.
The partslist doesnt match the layouts in the zip archive.

[Qiaozhi]

Whats the problem with the cuda cuda?

Please read the Build Document -> Geotech Baracuda - REV-A - Project Details

[homefire]

AnchorBarabom.pdf

[BKY1337]

For which Layout is this? I have CUDA CUDA and Alx & Ap Rev2 , both seems to be different.

What means 0,5 % Tolerance? This means i cant use my 5% Resistors?

Qiaozhi: The gerber Files in this thread are from a double sided board, i can only etch single side boards.

I think i need to make a partlist for myself , The CUDA CUDA looks nice but incomplete, I think i will make one for the REV 2 from Alx and AP.

I have now almost every Partslist , but not the one that i need. :-D

[Koala]

For which Layout is this? I have CUDA CUDA and Alx & Ap Rev2 , both seems to be different.

What means 0,5 % Tolerance? This means i cant use my 5% Resistors?

5% is fine for most.

And 1% or matched where it says .1

[BKY1337]

Thanks. I have made my own partslist now for the Alx & Ap Rev2 Version.

I think i can change the LF412ACN which cost me 4 Euro to TL072 or TL082 which costs only 40cent.

[Qiaozhi]

Thanks. I have made my own partslist now for the Alx & Ap Rev2 Version.

I think i can change the LF412ACN which cost me 4 Euro to TL072 or TL082 which costs only 40cent.

I don't understand why you're insisting on building a version of the Baracuda that is known to have design errors.
Did you not read the Build Document for the Geotech Baracuda REV-A?

[BKY1337]

No, because i saw that this is a double layer board.
Whats the problem of this build? Its the only layout which is single sided and which has all numbers of the capacitors.

Next one would be the CudaCuda but i dont have an exact partslist of it and it took me an hour to make this for the Rev2.

Which errors do you mean? I have the sprint layout file which contains two boards , one with a laying 6800uf and the other one with standing.

I have thought that Rev A means Rev1 and Rev 2 means Rev B and Rev 2 is the newest.

[ripsdevala]

LOL or just jump that and go with the Mini that is even better.

Any non motion MD is not working properly in my terrain/vulcanic area.
If someone can make single layer for geo baracudda that would be help, this is the most stable for md i build on all terain.

[BKY1337]

Baracuda-Single Side Alx&Ap.rar

This is my partslist and the sprint Layout

[Qiaozhi]

No, because i saw that this is a double layer board.
Whats the problem of this build? Its the only layout which is single sided and which has all numbers of the capacitors.

Next one would be the CudaCuda but i dont have an exact partslist of it and it took me an hour to make this for the Rev2.

Which errors do you mean? I have the sprint layout file which contains two boards , one with a laying 6800uf and the other one with standing.

I have thought that Rev A means Rev1 and Rev 2 means Rev B and Rev 2 is the newest.

As stated in the Geotech Baracuda REV-A thread:

"The Geotech Baracuda is based on the original Baracuda from Anchor Electronics. The design was first published by Alexismex in 2011 and (although people have reported some success) there have been a number of underlying problems with many of the builds, particularly when using a supply voltage that is too high. There are also several versions of the Baracuda schematic floating around, with each of them containing subtle differences, and many of these have discrepancies between the schematic and the layout. Following a number of Geotech members experiencing issues with the original design, it was decided to take a closer look and try to isolate the source (or sources) of these problems. All changes made are described in the attached Build Document. In fact, it is also possible for anyone with a previous Baracuda PCB to carry out cut-and-strap surgery on the board to bring it up to the same standard. I've already done it, so I know it's possible.

Kits and PCBs are available in the Silverdog shop -> www.silverdog.co.uk"

In other words, the Geotech Baracuda REV-A version is the latest and greatest. All the other versions contain design errors.
The decision was made to rename it "Geotech Baracuda" to distinguish it from the other "Baracuda" versions. The simplest solution is to order a PCB or a complete kit from silverdog.

Since you seem to be having trouble locating the Build Document, here it is ->

[BKY1337]

Ok, thanks. The Cuda Cuda is the one with issues too?

Then i have to try to etch a double sided board.

[BKY1337]

I will order the parts for the Geotech Baracuda now from the pdf.

Which Resistors need to be in 0,1 % tolerance?
Can i use my 5% resistors here too for everything else?

[Qiaozhi]

I will order the parts for the Geotech Baracuda now from the pdf.

Which Resistors need to be in 0,1 % tolerance?
Can i use my 5% resistors here too for everything else?

There is no requirement to use 0.1% tolerance resistors. Personally I always use 1% resistors, but 5% may be ok. The most critical areas are the timing components.

[BKY1337]

Ok, thanks a lot. One last question. I need a replacement for LT1054 , because it cost 5 Euro. I replaced LF412 by TL082.
And is there a sprint layout file from the geotech baracuda rev a?