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

[Goaty]

@Ripsdevala,,,I have this if it helps,,,I haven't built it,,let us know if it's ok,,,Regards,,Marty

Is this your own layout and have you built and tested it yet?
After a lot of mucking about I managed to view the files but they won't print properly on my printer with Linux so I haven't had a chance to check them.
(I tried to re-install Win10 using VM but Microsoft wanted me to jump through hoops so I spat the dummy with it!!)
I am quite keen to make a nice small Pickini using sm to fit in a waterproof housing but have too many other projects in hand to be able to dedicate the time .

[MartyJ1963]

Hiya Goaty,,,,No it's not my Layout, I didn't draw it,and I don't know if it's proven or not,,,I came across it here somewhere on the forum some time ago while collecting all the information I could in order to build my own Pickini 4,,,,,I'll keep looking for you to see if I can find a proven SMD version for you because I would like to build one too. I will let you know if I find anything. Regards,,,Marty.

[Goaty]

Marty
I did a quick search and I think that layout was made by nick holas and is described in post #315 onwards. bernte_one also worked on an smd version as did retooyep who described his in post #404.
I'm not sure if any of these employ the pin7 output of the pic to drive an LED or piezo but this seems to be a feature worth having on an underwater detector.
I have built a TH version in pvc pipe but have had real problems keeping the water out ( electrolysis with sea water dissolved the end cap of one of the lithium batteries - not good!).
At the moment I am looking for some readily obtainable (and cheap) waterproof housing to use.

[MartyJ1963]

Goaty,,I found this Layout and this has the 'LED out' like you mentioned,,,It may be the version they used but it's still a large pcb for SMD really as it is 68mm x 33mm. This also has the PIC programming pins on too I think,,,See what you think,,If it's not what you're looking for let me know and I'll keep searching,,,Regards,,,Marty

[Goaty]

Goaty,,I found this Layout and this has the 'LED out' like you mentioned,,,It may be the version they used but it's still a large pcb for SMD really as it is 68mm x 33mm. This also has the PIC programming pins on too I think,,,See what you think,,If it's not what you're looking for let me know and I'll keep searching,,,Regards,,,Marty

Thanks for the info Marty
I think Nick's latest version is in post #325 (&#327) where he has made further modifications. I have not looked at this yet because of the difficulty in viewing Sprint files (I have to use my wifes laptop with Win 10 which is infuriatingly sloooow!)
Reptooyep has also posted his smd lay files in post #404 and appears to have it working.
I am in the process of ordering some of the sm components in preparation for the build but still have to decide which board layout to use.

[MartyJ1963]

Ok Goaty,,,,Let us know how you do,,,post some pics etc when you've built it if you can. I have the SMD layout from post #404 also and just like you, I don't have the componets yet in SMD packages. I have 4x Pickini4's built and all work great,,one of them found me a solid gold ring with a diamond,,,it was 12" inches deep! Good little detector. I used a 3DSS coil wth it it that was 350uh. The wire was 0.5mm x 16 strands 600v PTFE hook up wire. Let us know how you go mate,,,Regards,,,Marty.

[Goaty]

Post #693

SMD layout. Ready to print.

I've started building this but now realize that there should be a bottom copper layer. Could someone (dbanner?) please check and publish a pdf copy so I could check as I can not open sprint files (Linux user)
Thanks

[dbanner]

Post #693




I've started building this but now realize that there should be a bottom copper layer. Could someone (dbanner?) please check and publish a pdf copy so I could check as I can not open sprint files (Linux user)
Thanks

Install Wine package for linux, then you can run Sprint.

[Goaty]

Install Wine package for linux, then you can run Sprint.

Good idea - I had forgotten about Wine. I started to install Win10 with VM but gave up when it would not let me use my product key.
I guess I would only need the sprint file viewer to print the board patterns?

[Goaty]

@dbanner
All good. Thanks for the advice - I needed a bit of a shove to try Wine and the Sprint file viewer works well with it.
Now I plan to put Reptooyep's design aside for a while and try Nick Holas's as it has the ICSP connector and should make it easier to program the smd pic.
The tracks are very fine on this so it will be a challenge to etch it. Hopefully I can see what I am doing now after just having cataract surgery on my right eye.
Soldering smd components will certainly put it to the test.

[Goaty]

SMD pickini - Clk & Data pins

I've started building this board originally designed by Nick Holas -



I plan to fit the Pic and the ICSP pins so that I can program it with the PICkit 3 programmer before adding the other components but have just noticed that the Clock and Data lines seem to be transposed .
I would appreciate it if someone could check this in case I am just having a seniors moment or it is actually a mistake on the board.
I have a vague recollection that I have read somewhere that these pins can be transposed but could be imagining it.
If they are actually swapped it won't be a problem to change them as I have hardwired from the socket to the appropriate points on the board.

[F117]

From the 16F1824 datasheet:
- ICSP data = pin 13
- ICSP clock = pin 12
hard to see on this ( double sided ? ) layout - but following the green traces to the vias and then to the processor pins, it looks indeed like they are swapped.
The other pins: VDD, VSS and MCLR are OK.

[useus]

Is it possible to use pic16f648a for this scheme?

[F117]

Is it possible to use pic16f648a for this scheme?

This design relies largely on a lot of built-in resources ( ADC, DAC, PWM, gated timer, comparator, ... ) of the 16F1824.
I provided the source code here http://users.telenet.be/willaert/MD/.../v4/Pickini4.c If you have the same resources on-board another controller, feel free to adapt the code for it.

[useus]

This design relies largely on a lot of built-in resources ( ADC, DAC, PWM, gated timer, comparator, ... ) of the 16F1824.
I provided the source code here http://users.telenet.be/willaert/MD/.../v4/Pickini4.c If you have the same resources on-board another controller, feel free to adapt the code for it.

I must immediately abandon the idea, pic16f648a has no adc.


I also have a 16f73 that could work but I can't work on the code.


thanks anyway!