info baracuda kit

[gallico58]

you confirm the measure pin6 U2 0 volts with DVM, I've moved the oscilloscope traces to better highlight the waveforms

[Qiaozhi]

you confirm the measure pin6 U2 0 volts with DVM, I've moved the oscilloscope traces to better highlight the waveforms

As green said, you need to adjust the offset using a scope, not a DVM.
Of course, this may not be the problem anyway. I suspect it could be your coil that causes the threshold to be towards one end of the adjustment.

[Calla969]

Hello, I have a barracuda on order from silverdog and I'm trying to get the other parts together. I want to get a housing, but I don't see the dimensions of the board listed anywhere. Can anyone help me out?

[homefire]

57 x 87 mm . Don't know height with components is like 2 inches.

[gallico58]

Calla969
maximum height depends on the capacitor C1 1000uF, if you can put it horizontally gains anything, attentive even if you put the mosfet heatsink.
measures such as post Homefire.
Hello

[kt315]

57 x 87 mm . Don't know height with components is like 2 inches.

silverdog board 65 x 96 mm. i do measurement in sprint layout...

[kt315]

[Qiaozhi]

KT315 is correct (in metric).
The board size was kept the same as the original from Alexismex, which is actually 3.8" x 2.6" (96.5mm x 66.0mm) to be exact.

[ionut_mtb]

hight is like 25mm with the big cap in normal position. i just ordered this box, i think is good with 3x18650 batteries.
http://www.ebay.com/itm/NEW-Waterpro...UAAOSwZVlXnCKW

[homefire]

Nice Enclosure. I'm still looking for a Aluminum enclosure. Don't need water tight.

[ionut_mtb]

i like it because it has a nice big oring for sealing. but it's a little bit expensive. i saw somewhere in this forum that people use copper adhesive tape for screen.

[homefire]

I have some 1cm coming for coil shielding. Should be here next few days. http://www.banggood.com/search/coppe...ive-tape..html

[kt315]

i like it because it has a nice big oring for sealing. but it's a little bit expensive. i saw somewhere in this forum that people use copper adhesive tape for screen.

post #87
http://www.geotech1.com/forums/showt...QUESTION/page4

[Calla969]

Seems like a decent aluminum enclosure.
http://www.banggood.com/DIY-Aluminum...l?rmmds=search

[gallico58]

As green said, you need to adjust the offset using a scope, not a DVM.
Of course, this may not be the problem anyway. I suspect it could be your coil that causes the threshold to be towards one end of the adjustment.

Hello
I solved my problem by replacing the cd40106 with hef40106.
with the replacement of this frequency to pin4 U4 becomes 730Hz, perhaps too high.
put in parallel 1000pF to C5.
in this way the frequency becomes 630Hz, more stable threshold, does not indicate ferrite, depth 28cm 1euro ok!
a question to understand: the secondary sampling is necessary to clear the ground effect?
as this parameter is determined by the construction guide Silverdog
Secondary sample delay (EFE) U4 pin + 8 = 400us main sample delay
Secondary sample = 46us pulse (U4 Pin 12)
regards