HP82143A Powering a 41 _Extend Your HP41_

[TallKey]

(05-21-2023 01:02 AM)Sylvain Cote Wrote:  I tried it on an HP-41CV without batteries and it does not work, even when the printer is connected to a power supply.
But, the USB-Power module from Diego Díaz does work perfectly, follow this link to see how to create one.
Sylvain

Thanks Sylvain. Have seen the post you shared, haven't a module to give to this cause.

Now have reason to wonder about modifying a peripheral, like a card reader vs a module

Referring to the contacts as 5 GND (-) and 1 BAT (+)

I can see you might cause problems with the battery pack installed with a now powered card reader supplying 5V.


---------------
| 11 9 7 5 3 1 |
[12 10 8 6 4 2 ]
--------------

Someone please rate the idea of modifying a peripheral, like the CR vs a module for USB I/O power:
Will work, might work, or just don't