SBG-PID

[bernte_one]

But be aware being Betatester is no fun

[bernte_one]

How much you need Andi?

[Andi68]

Are there people from Germany who are interested in the SGB-PID?
Then we could make an order, for me 5 boards are too much

[ivconic]

Recently they made me 10 pcbs for my magnetometers, including 10 smaller pcbs for keyboards.
Right now i am finishing making those devices.
Want to tell here that quality of those pcbs is just splendid.
Best service so far.

[6666]

Thanks Ivconic, this is new to me,
I have ordered some pcb's with your files, I hope it works
not done this before.
two us dollars for 5 pcb's crazy

[ivconic]

I use this service:

https://jlcpcb.com/quote

And there you can upload gerbers and check how they will look in different colors.
Just upload the same archive as it is.

[ivconic]

...

[6666]

Thanks a lot!
Bravo for spotting those!
Here is finally corrected:

Ivconic could you please post the gerber files thanks, and I will try and get some PCB's made

[scs]

The scheme works steadily without noticeable impact
from the field of the earth.

[green]

Hi dbanner, what happened to your reply? Don't know if it was correct but you at least tried to answer the question. Maybe swing should have been move the coil through the earth field. If the coil was mounted on a slide table that moved back and forth +-1m that could be aimed in any direction, North South, East West, horizontal vertical or any direction in between would there be an EFE signal. My guess is no, searched Physics 102 but haven't found the answer yet. Guess is based on observations of a crude experiment

Before the experiment I might have replied yes. Still don't know which is correct. Including scope picture of trying to measure EFE. Signal was less if pivot was N S. Holding the coil vertical, signal appeared to be higher amplitude when rocking coil, rocking N to S or E to W appeared the same. Little or no signal when moving coil back and forth. Signal at amplifier out is picking up a lot of EMI from scope at amplifier out so it's hard to see a small change. Would be hard to keep coil in same position without a slide table.

[scs]

To DonCaffeDelaSkobalj
" Another bulgarian rubbish in forum's room !!"
I notice that garbage is only in your head.

[Davor]

Excellent point. Bipolar pulsing also fixes 1/f noise.

True. It does not spoil ferrous response, so it is superior to EF sample method.

[green]

Hi dbanner, what happened to your reply? Don't know if it was correct but you at least tried to answer the question. Maybe swing should have been move the coil through the earth field. If the coil was mounted on a slide table that moved back and forth +-1m that could be aimed in any direction, North South, East West, horizontal vertical or any direction in between would there be an EFE signal. My guess is no, searched Physics 102 but haven't found the answer yet. Guess is based on observations of a crude experiment

[Carl-NC]

What you fix with a late EF sample is a collective sum of all offsets, but motion filter takes care of those as well. A detail that is not fixed by motion filtering is 1/f noise, which is effectively fixed with EF pulse.

Excellent point. Bipolar pulsing also fixes 1/f noise.

[Davor]

What you fix with a late EF sample is a collective sum of all offsets, but motion filter takes care of those as well. A detail that is not fixed by motion filtering is 1/f noise, which is effectively fixed with EF pulse.