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Thank you Bruno,

with my old analogue Oscilloscope I now get readable outputs, much better than using a digital Oszilloscope.

I also changed R3 from 680 Ohm to 330 Ohm to achieve the right R2R Voltage Levels.

Hi Thomas, thank you for your message

configuration word value 0x0014 is correct for PIC12F683, as it is in the binary file

please note that the oscilloscope must not be set in X/Y configuration but in external trigger mode : GP2 output pin is connected to the trigger input of your oscillo to get correct horizontal synchronization

timebase should be 0.5 ms/div

hope this will help

When I compare the Config Word of the precompiled HEX File with the Config Word resulting from recompiling the Project with mikroC V5.6.1, they are completely different.
precompiled HEX-File: Config Word = 0x0014 (Code Protection set..)
recompiled Source Fie: Config Word = 0x0FF2
Which one is correct?

When I connect the Outputs to an Oscilloscope with external Trigger from X and Chan1 from Y, I can see a steady wave containing 4 dedicated Voltage levels, but no readable Text. What is wrong?

val *= 5000 ; // convert 12 bits reading to voltage
//incorrect
val *= 5000 ; // convert 10 bits reading to voltage
//correct

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thank you very much

Can you please provide a board image from Eaglecad?

Nice project. I have one question, what is in the file built_in.h?

great idea and nice code.

good

zfd