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

[6666]

Why not just use the hex code ?

[folharin]

I can not copy the hexadecimal code
Não consigo copiar o código hexadecimal

[popka-ru]

you need to create a hex file and enter the hex code into it, save and flash the controller. nor any compilations produced unnecessarily.

[folharin]

The problem is, I do not know how to do this.

[popka-ru]

create a text file, open through the notepad https://notepad-plus-plus.org/download/v7.5.4.html enter the code and save it as a hex.

[popka-ru]

and just in case the conversion from one to another

[F117]

http://users.telenet.be/willaert/MD/...ini_16F616.hex

Right click -> save as "Pickini_16F616.hex"

Remember that this is the very first version of Pickini.
You may want to change to the Pickini v4 with 16F1824 PIC ( embedded oscillator, no need for a crystal + higher resolution: 32 MHz instead of 20 MHz)

[bernte_one]

yes i can say it works just open Notepad, copy hex into empty sheet and save
if you save it as v4.txt file you can also rename it into v4.hex it is converted automatic

in mplab ide create a new Project, set correct Family of chip design, in the Setting on the top tool bar serch programmer Options for power Setting and set hook on 5V power target from pickit
then press run and you should get what you want

[folharin]

t worked. I downloaded the notepad ++program...ok

[Arionas]

http://users.telenet.be/willaert/MD/...ini_16F616.hex

Right click -> save as "Pickini_16F616.hex"

Remember that this is the very first version of Pickini.
You may want to change to the Pickini v4 with 16F1824 PIC ( embedded oscillator, no need for a crystal + higher resolution: 32 MHz instead of 20 MHz)

[6666]

I went to the park today with my Pickini 4 and spent a short time detecting and digging. My wife made a video of my first find:

https://youtu.be/OvFEMMV0HE4

Here is a photo of the loot I located in about 30 minutes:

[ATTACH]39053[/ATTACH]

Nothing very exciting in my finds but I'm very happy with how the detector works and the pinpoint feature is especially helpful.

I'm hoping to make it to a more exciting location in the near future.

Hi just wondering what you made your coil housing from ?

[F117]

Some people asked me by email if it is possible to manually set the comparator slicing level that determines the flyback pulse width measurement.
This hack overrules the automated slicing level set up by a 10bit PWM output.
Normally, the automated adjustment will first set up the DC level of the flyback pulse and then set the slicing level to 0.5 V below the DC level after the flyback pulse.
This results in a very sensitive setting that works fine in places without any EMI distortion.
When you really want to degrade the performance of this detector because some EMI noise source is nearby - especially in-house ( but the use case for in-house appliance of this detector was never considered in the design phase), you can do so, by overruling the automated PWM generated DC level to the comparator pin.
This use case is one of the reasons why the DC level was brought outside the PIC.


The DC level for the comparator slicing level is generated by PWM output pin 2.
Then it is fed into the comparator input via R19 - R20 and C13.
The RC filter R20/C13 can remain, but R19 is just a bridge resistor: cut/remove R19 = 10 ohms and connect R20/C13 to the wiper of a 4K7 potmeter between 5V and Gnd.


When the DC level is turned outside the 1.5 - 4 V range of the analog flyback pulse, the coil error sound will be heard.
A limited realistic range would be 2 to 4.5 V.


But again: this detector was intended for the beach, not inside an EMI infested house.




Have fun,
- Bernard

[morganton]

Hi just wondering what you made your coil housing from ?

I was too incapacitated from surgery earlier this year to respond to your question, so apologies for the delay.

I'm finally starting to think about metal detecting again.

The coil housing is made from two ceiling fan medallions that can be purchased from Home Depot or Lowes (in the U.S.)

I used some styrene adhesive to glue the two halves together. I have used this method for many coils and it works great, plus you can center the housing over the find and then mark it through the center hole.

Best,

Dan

[6666]

I was too incapacitated from surgery earlier this year to respond to your question, so apologies for the delay.

I'm finally starting to think about metal detecting again.

The coil housing is made from two ceiling fan medallions that can be purchased from Home Depot or Lowes (in the U.S.)

I used some styrene adhesive to glue the two halves together. I have used this method for many coils and it works great, plus you can center the housing over the find and then mark it through the center hole.

Best,

Dan

Ok thanks, hope you get better, its horrible when your crook

[MartyJ1963]

Hi all,,,,I've been after making the Pickini for quite awhile now and I've finally put the board together,,just waiting on my Pickit 3 to arrive to program the chip. It's probably a silly question but can the Pickini be used for 'Inland ' detecting as well as beach hunting? I live quite away from any beach and don't drive,,,Thanks in advance. Marty