WP-34S keyboard overlays wearing out?
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03-28-2014, 03:01 PM
(This post was last modified: 03-28-2014 03:05 PM by jebem.)
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WP-34S keyboard overlays wearing out?
Hi all WP-34S fans!
After looking out for a low cost RPN calculator from HP, like the 42S, and failing on that, I decided to re-purpose an HP-30B with the alleged excellent WP-34S project. I know that I'm arriving late, but I still believe in the merits of such a machine. I must say that I start using RPN calculators since the 70's (at school), but I like all kind of new technological environments, so I have got an HP-Prime as well... we need to keep our minds as open as possible. To prepare the new calculator, I have ordered: - One used HP-30B calculator from eBay (Italy, TheKingOfCalculators); - Two sets of Keyboard Overlays from Eric ( http://commerce.hpcalc.org/overlay.php ); - One 32.768 KHz Quartz Crystal 20ppm DT-26 with two Ceramic Capacitors 12pF from eBay UK; To make the serial cable (USB version for Windows PC, with internal 3.3Volt regulator to act as power supply to the calculator during the flash ROM programming), I've ordered: - One USB to RS232 TTL serial cable adapter Model PC-PL2303HX Chipset from eBAy China; - One DC/DC 4.5V-7V to 3.3V AMS1117-3.3V Power Supply Module from eBay China; - 18 Crown Spring Loaded Pogo Pin JTAG from eBAy Canada; - One small plastic box, two Push buttons (Reset and Erase), three LED's (Power, Reset and Erase) and a couple of 1Kohm resistors from a local shop. Now I have to wait until all components are delivered, specially the China ones that can take more than 30 days to reach South Europe. My question is: As the KB Overlay stickers are printed on vinyl, what are your experience so far using the calculator? Does it stay over the keys after a few months of use? Does it wears out? Thank You all for reading this! Any feedback is very appreciated. Cheers, Jose Jose Mesquita RadioMuseum.org member |
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