My WP-34S : USB to Serial cable prototype

[Dave Frederickson]

(01-23-2015 07:14 PM)jebem Wrote:  I believe there was a missed business opportunity here:
Selling ready made WP-34S units modified with Harald's USB integrated interface.

Probably not, but that's not the board from Harald to which I was referring. You may have noticed that Harald offers several versions of USB-Serial adapters. The one to which I refer is the one with the two buttons, similar to the original RS-232 cable from HP. This is the board Katie used in her project.

However you choose to connect the adapter to the 30b, this is the easiest way to get a programming adapter (solder six wires and you're done). Harald also sells crystals and caps, so one-stop shopping! I chose to buy an adapter from a forum member, but if you want to build your own that's fine.

Dave