"Only" 18 months between proof of concept and final design of what was supposed to be a minor diversionary effort on the side... but finally I finished the DPScope SE project. For those interested in the history, look at these two threads:
http://www.picaxeforum.co.uk/showthread.php?15814-Interest-in-very-simple-but-usable-oscilloscope
and
http://www.picaxeforum.co.uk/showthread.php?17938-Your-opinion-counts-questions-regarding-simple-but-usable-oscilloscope
The final design turned out very different from the initial concept:
PIC12F683 (8 pins, 20 MHz) --> PIC18F14K50 (20 pins, 48 MHz)
one channel --> 2 channels + ext. trigger
nothing else --> 4-channel logic analyzer
RS-232 connection to PC --> USB for power and data
bare board --> half-custom enclosure
... and all that AFTER I recovered from some temporary feature creep!
The webpage is here:
http://www.dpscope.com
or head directly to the software and documentation (assembly guide is complete, but user manual will follow in a few days, as will a detailed description of the circuit schematic. Pictures aren't there yet either):
http://www.dpscope.com/downloads_se.html
Enjoy!
Wolfgang
PS: Sitebuilder gives me some grief, quite often the top navigation bars on my modified site get messed up with duplicate/wrong labels etc. Let me know if you experience the same. Does not seem to be a browser issue as IE and Firefox suffer similar problems... but too late to spend a few more hours fixing that today.
http://www.picaxeforum.co.uk/showthread.php?15814-Interest-in-very-simple-but-usable-oscilloscope
and
http://www.picaxeforum.co.uk/showthread.php?17938-Your-opinion-counts-questions-regarding-simple-but-usable-oscilloscope
The final design turned out very different from the initial concept:
PIC12F683 (8 pins, 20 MHz) --> PIC18F14K50 (20 pins, 48 MHz)
one channel --> 2 channels + ext. trigger
nothing else --> 4-channel logic analyzer
RS-232 connection to PC --> USB for power and data
bare board --> half-custom enclosure
... and all that AFTER I recovered from some temporary feature creep!
The webpage is here:
http://www.dpscope.com
or head directly to the software and documentation (assembly guide is complete, but user manual will follow in a few days, as will a detailed description of the circuit schematic. Pictures aren't there yet either):
http://www.dpscope.com/downloads_se.html
Enjoy!
Wolfgang
PS: Sitebuilder gives me some grief, quite often the top navigation bars on my modified site get messed up with duplicate/wrong labels etc. Let me know if you experience the same. Does not seem to be a browser issue as IE and Firefox suffer similar problems... but too late to spend a few more hours fixing that today.