New Project wp34s micro usb flash cable revisited

[walter b]

(02-04-2015 06:00 PM)MarkHaysHarris777 Wrote:  

(02-04-2015 11:09 AM)brouhaha Wrote:  (1) It's possible I'm confused about what you're doing, but doesn't that result in a calculator that has a micro-USB connector that isn't electrically USB? that doesn't seem like a good thing to me.

(1) That is correct. It is RS232 (sort-of) made available on the micro usb connector which eliminates the need to use the pogo pads for update, provides 3.4v power for the unit, provides a rock solid connection in a tiny space, and serves the specific purpose of updating a functional wp34s.

One thing I don't like about this concept is the paradigm of using a standardized data jack for deviating purposes. I concur with Eric in that matter. Barry's approach (cf. here) looks better to me.

(02-04-2015 06:00 PM)MarkHaysHarris777 Wrote:  One of the things I don't like about Harold's board is the paradigm of mounting the micro jack out-the-side, and the need to modify the case to get the board and jack into place due to size. The FTDI plug can be disassembled so that only the board needs to be mounted (small drop of epoxy, the board is tiny) and then fine bell wiring runs to the pcb AND to the female micro jack (which instead of being mounted through the side, which is ugly, it is mounted in the back plate under the battery cover; when not in use you don't even see it).

Beauty is in the eye of the beholder. Personally, I prefer an easy access to that jack over the need to open that overbuilt battery door every time.

d:-/