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

[ripsdevala]

340uh 2 ohm, no shield Just for test....
Error

https://dl.dropboxusercontent.com/s/apr8auhsup40lxg/%E7%9A%AEkpikini.mp3?dl=0

I do something wrong somewhere maybe .....

[BC547]

This is the coil error sound.
No flyback pulse is detected. There was a layout around here where pin 8 and 9 were not shorted.
Check all the DC voltages described here: http://users.telenet.be/willaert/MD/pickini/pickini_en/V4/electronics.html

[Arionas]

This is the coil error sound.
No flyback pulse is detected. There was a layout around here where pin 8 and 9 were not shorted.
Check all the DC voltages described here: http://users.telenet.be/willaert/MD/pickini/pickini_en/V4/electronics.html

DC voltages


All voltages measured with a battery voltage of 12.0V:

• U1 - PIC16F1824
  PIN 1 : 5.0V
  PIN 2 : 2.7V
  PIN 3 : 1.2V - sensitivity potmeter
  PIN 4 : 5.0V
  PIN 5 : 4.7V
  PIN 6 : 0.1V
  PIN 7 : 0.0V
  PIN 8 : 3.7V
  PIN 9 : 3.7V
  PIN 10 : 2.7V
  PIN 11 : 0 ..5.0V - audio
  PIN 12 : 2.8V
  PIN 13 : 2.0V
  PIN 14 : 0.0V
  
  IC4 - LM318 opamp
  PIN 1 : 9.5V
  PIN 2 : 6.8V
  PIN 3 : 6.8V
  PIN 4 : 0.0V
  PIN 5 : 4.8V
  PIN 6 : 7.4V
  PIN 7 : 11.9V
  PIN 8 : 1.4V

[Arionas]

This is my Pcb.........Thanxs Mister F117

[Arionas]

This is the coil error sound.
No flyback pulse is detected. There was a layout around here where pin 8 and 9 were not shorted.
Check all the DC voltages described here: http://users.telenet.be/willaert/MD/pickini/pickini_en/V4/electronics.html

[ripsdevala]

This is what i got...
Sensitivity 0

U1 - PIC16F1824*
PIN 1 : 5.0V 5v
PIN 2 : 2.7V 2.7v
PIN 3 : 1.2V - sensitivity potmeter. 0.2v
PIN 4 : 5.0V. 0v
PIN 5 : 4.7V. 4.7v
PIN 6 : 0.1V. 0v
PIN 7 : 0.0V. 0v
PIN 8 : 3.7V. 3.6v
PIN 9 : 3.7V. 3.6v
PIN 10 : 2.7V 2.2v
PIN 11 : 0 ..5.0V - audio. 2.6v
PIN 12 : 2.8V. 2.8v
PIN 13 : 2.0V. 1.9v
PIN 14 : 0.0V. 0v

IC4 - LM318 opamp*
PIN 1 : 9.5V. 9.1v
PIN 2 : 6.8V. 5.3v
PIN 3 : 6.8V. 6.4
PIN 4 : 0.0V. 0v
PIN 5 : 4.8V. 9.1v
PIN 6 : 7.4V. 7.1v
PIN 7 : 11.9V. 11.5v
PIN 8 : 1.4V. 1.5v

[BC547]

2 differences in DC voltages are:
- pin 4 of the PIC = pinpoint pushbutton seems to be shorted - or switch closed : 0V instead of 5 V
- pin 5 of the opamp: not connected: 9.1V instead of 4.8V ??

Is the coil properly connected ? - check with ohmmeter between the 2 outer pins of the coil connector.
No short circuit with shielding? - check with ohmmeter between outer pins and middle pin

[ripsdevala]

All seems normal, coil is properly connected, pinpoin on off nothing change, yes pin5 opamp is 9v. Not shielding yet, should i?
I use standalone pickit3 programer, not set anything.

Update:
Change one 10uf caps pin4 16f2824 now 5v

[Arionas]

Look your photo...............






And Look My photo..

[ripsdevala]

Ya arionas thats a joined track, pin 8 and 9, its similar with yours.

[BC547]

There are a number of points in your PCB layout where the ground plane is almost touching other points:



Do you have a flyback pulse every 2 ms ? Check that the IRF740 is not shorted at the points indicated.

[geoscash1]

My attempt at pickini V4

Anxious to get workin on this project, still waiting on some parts and my chips but in the mean time got my board done and ready to go. Not to bad for my first try at doing my own board... Great thread and lookin like a great project...





Sorry, not tryin to hijack the thread, just interested in this project so figured to post in here.

Geo

[ripsdevala]

There are a number of points in your PCB layout where the ground plane is almost touching other points:

[ATTACH]37818[/ATTACH]

Do you have a flyback pulse every 2 ms ? Check that the IRF740 is not shorted at the points indicated.

No short at all, here is the hi res pcb back, im messing my pcb with full tin, but not get work either. How to check i have flyback?

Anxious to get workin on this project, still waiting on some parts and my chips but in the mean time got my board done and ready to go. Not to bad for my first try at doing my own board... Great thread and lookin like a great project...

[ATTACH]37820[/ATTACH]
[ATTACH]37821[/ATTACH]
[ATTACH]37822[/ATTACH]

Sorry, not tryin to hijack the thread, just interested in this project so figured to post in here.

Geo

Nice & clean board, but i think you need to short pin 8 and 9 pic legs

[ripsdevala]

Change BS170 with another
ITS ALIVE!!

[geoscash1]

Nice & clean board, but i think you need to short pin 8 and 9 pic legs

Hey thank you. Yep, I caught the pin 8 & 9 short so will do it when I solder the socket, thanks for the heads up though, much appreciated.