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

[BC547]

Nice hack / reverse engineering, Eclipse

[eclipse]

So I've got all parts but the Pickit3 programmer. Didn't want to wait so I used Pickit2 to program the chip.
Since the PIC16F1824 was missing from the list of supported devices I tried to update the list (here is the new file list).
Pasted it as C:\Program Files (x86)\Microchip\PICkit 2 v2\PK2DeviceFile.dat (keep the original one too, just in case).
And it worked!

[BC547]

Nice work, keep us informed about test results !

Thanks,
- Bernard

[ripsdevala]

Hopefully, we can get some pictures here of new builds and results / videos of external tests now ...

- Bernard

3 parts remaining

[reptooyep]

Hi,
How much current does the circuit drain ?
I'd like to make it waterproof for scubadiving,
Is it possible to make a program version without audio, just a +5v output when detecting to power a phone vibrator ?
Thanks for your great work.

[BC547]

Hopefully, we can get some pictures here of new builds and results / videos of external tests now ...

- Bernard

[Arionas]

Thankss .......

[BC547]

It was correct on the schematic but not in the parts list.

[Arionas]

C12 should be 10 microfarad.
I adapted the parts list here:

http://users.telenet.be/willaert/MD/pickini/pickini_en/V4/electronics.html

Thanks for pointing this out

[BC547]

C12 should be 10 microfarad.
I adapted the parts list here:

http://users.telenet.be/willaert/MD/pickini/pickini_en/V4/electronics.html

Thanks for pointing this out

[ripsdevala]

The part list and pcb on c12 is not same
Please check
Pcb
Part list

[BC547]

Nick,

Most headphones have an impedance > 20 ohms.
If you connect them to the Pickini4 PCB, the sound is good / loud. You could decrease the 2 series resistors of 1K ( R16 and R17) in the original schematic, to have an even louder sound.
To me, with the headphones I normally use, the 1K resistor is a tradeoff between going deaf and hearing the beep.
Normally, you would not need an extra amplifier. The beep is digital: beep = 1kHz and dig, or no beep / the 1 Hz idle tick.


Regards,
- Bernard

[nick holas]

small amp

what do you think about that?
pcb 20x20x5mm
found lm386 smd on micro wave oven pcb and some smd capacitor too ,so i think that it could be adapt for free for pickini.
i made this pcb from web scheme,do you think it is correct?
thanks

[BC547]

What have you made to hear this loudy sound??

The sound recording is just the built-in microphone of the camera and a small loudspeaker connected to the headpone jack.
The quality is bad, because you can't hear the 1 Hz idle tick, for instance...

Looking forward to see your creation !

Regards,
- Bernard

[nick holas]

What have you made to hear this loudy sound??
Small amp (lm386,tda2822 maybee???)
Thanks
(Sorry for double post)