Power sources
Power sources
Does anyone know of a small power bank that does not cut out when it senses the low power draw of the DM42?
Re: Power sources
Why would you want that?
The DM42 does hardly draw any power. So the battery lasts for years.
I am still on my factory delivered battery.
Expect to change the battery once every few years.
The DM42 does hardly draw any power. So the battery lasts for years.
I am still on my factory delivered battery.
Expect to change the battery once every few years.
DM41X SN: 00070 DM42 SN: 00754
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
Re: Power sources
I have an old 2500mAh Xtorm powerbank for the DM41X, never tested with the DM42.
Mainly for use in the train when I want some more speed than with the built in battery.
Maybe the newer models are more intelligent and cut out with low power drain but the old one works well.
Mainly for use in the train when I want some more speed than with the built in battery.
Maybe the newer models are more intelligent and cut out with low power drain but the old one works well.
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
Re: Power sources
DM42: 00425 - DM41X: β00066 - WP43: 00042
Re: Power sources
The DM41X has the same hardware as the DM42.
DM41X SN: 00070 DM42 SN: 00754
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
Re: Power sources
To boost the speed, maybe?
If the DM42 is powered by USB, the CPU's clock gets bumped up from 25MHz to 80MHz.
There are only 10 kinds of people in the world: those who understand binary and those who do not.
Re: Power sources
One reason to use a power-bank might be if you want the faster operation whilst running from USB power?
My naive use doesn't need that, but others' might
edit: sorry, Godwin, beat me to it
Cambridge, UK
41CL/DM41X 12/15C/16C DM15/16 17B/II/II+ 28S 42S/DM42 32SII 48GX 50g 35s WP34S PrimeG2 WP43S/pilot
Casio, Rockwell 18R
41CL/DM41X 12/15C/16C DM15/16 17B/II/II+ 28S 42S/DM42 32SII 48GX 50g 35s WP34S PrimeG2 WP43S/pilot
Casio, Rockwell 18R
Re: Power sources
Ok, faster operation makes sense!
DM41X SN: 00070 DM42 SN: 00754
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
HP35, ..., HP67, HP41(C,CV,CX), ..., HP48GX, ..., HP33S, HP35S, WP34S, WP43S
Re: Power sources
Many existing battery packs have an always-on mode for low-current devices. Unfortunately this functionality is often not documented. For example, some Anker battery packs have an undocumented always-on mode that is activated by simply pressing and holding the power button until a light turns green.
Some people have made USB dongles with a simple switching current sink that draws 50 mA or so for half a second every few seconds to keep the battery pack switched on. Should be Googleable.
Some people have made USB dongles with a simple switching current sink that draws 50 mA or so for half a second every few seconds to keep the battery pack switched on. Should be Googleable.