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WP34S USB and IR board release
02-06-2020, 10:03 AM
Post: #160
RE: WP34S USB and IR board release
Hi Jim,

thanks for your kind words. As I test assembled boards anyway in a real HP-30B it is only a little bit more work to generate a new test wire set for every board. It is encouraging that it indeed makes your life easier.

Regarding white BAT wire you are completely right. Connection between positive battery terminals is mentioned in WP34s manual (corresponding picture attached below). Normally I include that about 1 inch (red) wire for each assembled board. I cannot solder it cause both ends are in destination WP34S. Sorry, when I forgot it in your case. And it is a good idea to use a white instead of a red wire.

Thanks again,

Werner

(02-05-2020 08:40 PM)Jim Horn Wrote:  The new PCBs are excellent - thank you for even putting the six wires on that connect it to the rest of the calculator. All six are different colors, making installation much easier!

I am concerned about the white BAT+ wire, though. The WP 34S users manual says to connect it to "the big upper battery terminal." However, the illustration shows a connection to both batteries' big upper terminals. Since the two battery inductors, LB1 and LB2 have been removed, there is no longer any continuity between the two batteries so connecting to only one means the WP 34S is only powered by that one and the other is not connected.

I've added a wire between the two "big upper" (positive) terminals to ensure both cells are used. When I get home this evening, I'll confirm the need for that with my WP 34S which I updated last week without this extra wire. If my suspicions are correct, it will run with the left cell in place and without the right one but not the other way around. In which case I will open it again and add the extra wire.

Many, many thanks for a fine board and build kit - the difference it makes in WP 34S usability is enormous (and yes, I do have the HP cable - this is *far* easier!).


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Messages In This Thread
WP34S USB and IR board release - Harald - 03-31-2017, 03:18 PM
RE: WP34S USB and IR board release - c785 - 04-03-2017, 11:18 AM
RE: WP34S USB and IR board release - c785 - 04-03-2017, 02:13 PM
RE: WP34S USB and IR board release - c785 - 04-06-2017, 06:23 AM
RE: WP34S USB and IR board release - nsg - 04-06-2017, 12:58 AM
RE: WP34S USB and IR board release - Gene - 04-08-2017, 08:21 PM
RE: WP34S USB and IR board release - jch - 04-09-2017, 06:14 PM
RE: WP34S USB and IR board release - c785 - 04-10-2017, 06:14 PM
RE: WP34S USB and IR board release - c785 - 04-10-2017, 09:13 PM
RE: WP34S USB and IR board release - TomC - 06-24-2017, 12:12 AM
RE: WP34S USB and IR board release - TomC - 09-22-2017, 01:55 AM
RE: WP34S USB and IR board release - c785 - 07-05-2017, 07:25 PM
RE: WP34S USB and IR board release - 2far - 09-05-2018, 08:57 AM
RE: WP34S USB and IR board release - TomC - 01-28-2020, 12:19 AM
RE: WP34S USB and IR board release - TomC - 01-28-2020, 11:12 PM
RE: WP34S USB and IR board release - Sadsilence - 02-06-2020 10:03 AM



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