Help for PI 4 Project

[Dixix]

Thanks for the help.
I use a programmer. In PikCit2 I put VDD to automatic.
I changed the configurations bits on 3FFE. C9FC not. Only 0 - or 1 - or 2 - or 39FC. I leave it at 09FC.
Now the circuit gubt a tone of it. Pic of the pulses. But I do not think so as it should. Connected with the coil, no change of tone.
The following measurements with a simple PC mini Oscope I did:
Speaker output:

PIC-Pin2

PIC-Pin5

PIC-Pin6


Should I still measure something?
Hopefully you can help me?
Thanks
Dirk

[bernte_one]

just start adapt the smd version to sprint layout
also seen then that c3 is missed and landed here while searching for solutio now

hope we can solve it dirk

[bernte_one]

hello george and carl
would one you you please fullfill the shematic from pi?

and can you upload a layout picture from the th board layout and smd board layout in a better solution than in the book

please?

[bernte_one]

hello Dirk

have you any news on pi 4 project
i can program pic controller for on pickit3 maybe there are some differences

had to do some hard work last weeks but i will continue the smd layout and post results asap

regards

[bernte_one]

waht is c3 on layout in the book concept (under the pic controller)?


not ready but next weeks i will work a hour per day on this

[bernte_one]

hello dirk are you still alive
last i heared was not good

[6666]

hello Dirk

have you any news on pi 4 project
i can program pic controller for on pickit3 maybe there are some differences

had to do some hard work last weeks but i will continue the smd layout and post results asap

regards

I have 2 pickit's real ver 2 and china clone of ver3, when I first tried to program the 1840 I got error messages see post #5
but I cannot remember which pickit I tried at that time, but after now just reading B1's post were he used the ver 3 and it worked ok, I tried
pickit ver 3 and mplab ide 8.76, with config bits set in code ticked and it programmed ok , no error messages, just got to test it.

[bernte_one]

hello 6666

any News is you pi4 working, did you know the missing value from c3

[6666]

Hi B1
I have not had the time to test the 1840 yet, I hope soon.

I dont quite understand your question about C3 in the PI4
on the schematic it shows as 1nF
its not on the parts list on page 190, but it on both the DIP PCB and the SMT PCB.

[bernte_one]

ah that was suspect to me

partlist contains not c3
shematic has c3

so i fit in a 1nf and will finish my smd layout
will upload the next days

hope we can discuss more about it and compare our pictures from oszilloscope

got the Info from somebody here how to Import gerber files into sprintlayout
make the conversion from eagle to sprint a little bit easier

[bernte_one]

ok i have started with through hole layout

[bernte_one]

Need some fast help from someone who ownes the book too
in luch break i will buy some parts
was the irf9630 n-chanel or p-chanel? was marked on partlist

[6666]

6.5A, 200V, 0.800 Ohm, P-channel Power

[bernte_one]

thanks wasnt sure myself

[bernte_one]

hello,
today i mounted all parts in itmd pi4 pcb and programmed the pic
but i had NO Success

Can anybody tell me what i should hear if i start the unit. i powered it with 18650 pack with 12,5 volts
first tried with piezo
than with small speaker
and then with headphone -- nothing happened

measured from pins of ic to gnd

ne5543
1 - 6,65
2 - 6,23
3 - 6,23
4 - 0
5 - 6,23
6 - 6,23
7 - 6,24
8 - 12,54

pic12f1840
1 - 6,24
2 - 0,01
3 - 0
4 - 6,2
5 - 0,13
6 - 0,08
7 - 6,64
8 - 0