HP50g - RS-232 cable

[Claudio L.]

(10-10-2016 10:00 AM)joeres Wrote:  Hi, I am looking for a HP50g RS-232 cable. No order is possible on the websites http://commerce.hpcalc.org/serialcable.php and http://www.samsoncables.com/catalog/prod...rod_ID=391. And http://www.stk4hp.com/ does not deliver to Germany.

Are there other ways to buy a RS-232 cable?

Thanks for help and kind regards.
Joerg

I haven't tried, but one of these level shifters should work (they are 2.8V instead of 3.3V though, but I think they should work the same):

http://www.robotshop.com/en/sfe-db9-rs23...hgodorwChA

All you need to do is to buy a USB type A female connector, solder the wires properly and use a standard USB type A cable to usb B mini 4-pin like these ones:

http://www.monoprice.com/category?c_id=1...id=1030308

If you wire it carefully you don't even need a null-modem adapter, you can cross the wires on the female USB connector.

A long while back I built myself a similar level shifter with a MAX232 but I don't see why these ready-made solutions wouldn't work. Once I soldered the wires and the connector, I made a plastic mold and filled it with a hot-glue gun. In the end I have a "brick" adapter with a USB female A connector that I can use with any cable. It worked very well for years.