Posts: 1,083
Threads: 126
Joined: Sep 2006
Yes the correction factor is excellent but does take alot of code. The Synchronar watch from the EARLY 70's also had an accuracy factor instead of the trimming cap.
At the moment, to save code and space, I think the cap is the way to go. It can be done quite elegantly depending on the amount of time you want to put into the project.
As far as the quartz crytsal polarity goes, answered that by installing the crystal and it functions in the calculator correctly.
Additionally if anyone out there needs very thin wire, I have used left over telephone cable. It comes with four wires colour coded and you simply peel them out of the surrounding cables. Nice source of thin insulated wires.
Cheers, Geoff
Posts: 225
Threads: 13
Joined: Jun 2011
Quote:
The 41 time module implemented a clock correction factor perhaps the WP34 firmware could have this added.
The lack of persistent memory is the problem here. If not, I would have implemented it already to calibrate Stopwatch on WP34s without a crystal.
The other solution would be to edit the firmware binary before flashing it. I'm not sure there is a real need anyway.
Posts: 3,229
Threads: 42
Joined: Jul 2006
It isn't so much adding support for a correction factor as where to store this in our already busting at the seams non-volatile RAM.
We've current got a bit or two of this RAM available and it has been down to zero bits free a couple of times. Storing a correction factor will require more than this to be rudimentary and a lot more to be properly useful.
- Pauli