From HP 41 to WP 34 S

[walter b]

(02-08-2015 02:41 AM)BarryMead Wrote:  

(02-08-2015 02:24 AM)garfy Wrote:  thank you, interesting, i wonder if i am able to add this micro usb.

I have modified calculators using BOTH the micro-USB board method, and the 2.5mm headphone jack method and I find that the 2.5mm headphone jack method is much easier.
...
With the Micro-USB board you need to solder at least 5 wires and remove two surface mount inductors.

Almost, Barry, but these are jumpers. Anyway, if our new French friend won't like to tune his calculator himself, there will be certainly some friendly French folks found here who can do it with/for him.

d:-)