PICKINI V4 - an easy to build, self adjusting PI detector

[Boadil]

Here is the documentation package of the board. The PCB is 4 layers which I had made at JLC PCB for $28 for 5 boards.
Please note that the 470 Ohm resistor R4 must be replaced by 2 x 1K 0805 resistors soldered on top of each other as the single 0805 470 R resistor is incapable of handling the power and fails...

[ATTACH]n436354[/ATTACH]


I also kept the PIC as a DIP device for ease of reprogramming.

Kind regards

It has the zip with the files for the PCB

[Olly]

It has the zip with the files for the PCB

Inside the .zip file is a sub-directory called 'gerbers', these are the PCB manufacturing files.
Just zip up this 'gerbers' directory and send it to JLC or wherever you plan on having the boards made.

Note that the gerber naming convention is as defined by JLC (They have a guide on their website for producing gerbers from KiCad the way they like it.)

Cheers,

[algan]

Will it work if another integrated circuit is used instead of LM318, for example, LF356 or LF411?

[F117]

The LM318 has a higher bandwidth and slew rate than the LF356 or LF411. LM318 = 70V/microsecond vs 12-13V/microsecond for the others.
No idea if "it will not work" because of this... I never tried.

[gurdal]

Hello F117 master,
What should be the coil wire thickness and mh value information for an 18 cm sensor?
Thank you very much

Gurdal

[F117]

gurdal


You can find plenty of information on coil / wire sizes in the dedicate coil section of this forum. https://www.geotech1.com/forums/forum/technology/coils
A coil for Pickini v4 is not different from any other generic PI coil.
Inductance: 300 - 400 microHenry --- resistance 1 - 3 Ohm
Here is some info on my hands-on coil build:
https://www.willaert.world/MD/pickini_en/V3/coil.html

[F117]

According to this post by MartyJ1963 -- a basket coil would give best results.
I never tried it myself:

https://www.geotech1.com/forums/foru...556#post259556


https://www.geotech1.com/forums/foru...544#post259544

[gurdal]

Thank you very much