Re: [M100] M100 power requirements

[Josh Malone]

Does seem likely that the modem would normally be shut down. I didn't test
running the modem as I doubt I'm likely to use it. :-)
On Dec 10, 2015 9:02 PM, "Peter Vollan" <dprogra...@gmail.com> wrote:

> I can tell you that when I used to call BBSs at 300 baud with my Model
> 100, the AA batteries seemed to drain quickly.
>
> On 9 December 2015 at 05:08, Josh Malone <josh.mal...@gmail.com> wrote:
> > I noticed no change in the power draw on my 102 when using the serial
> port,
> > although it wasn't actually connected to another device.
> >
> > On Dec 9, 2015 1:06 AM, "John Whitton" <jwhit...@bellsouth.net> wrote:
> >>
> >> Mike,
> >>
> >> M102, and it was running its own monitoring program, that's how it
> (I)
> >> knew run time. When it pooped out, the last time was recorded. It was,
> in
> >> fact , monitoring its own battery voltage via an ADIOS. One might argue
> that
> >> the RS-232 ate some power, but it was only OPENed when making a
> measurement
> >> at 5 minute intervals, then closed.
> >>
> >> If you recall, I also (later) embedded an A/D in a M102, which can
> >> measure both external voltages as well as monitor battery voltage. I
> could
> >> run the same test now, without having to hook anything up at all. Cheesy
> >> video of that: https://www.youtube.com/watch?v=HMV2HKwrCCc
> >>
> >> John W.
> >>
> >> - Original Message -
> >> From: Mike Stein
> >> To: Model 100 Discussion
> >> Sent: Wednesday, December 09, 2015 12:50 AM
> >> Subject: Re: [M100] M100 power requirements
> >>
> >> Was this an M100 or a 102, and what if anything was it running?
> >>
> >> Looks like an app for the ADIOS ;-)
> >>
> >> m
> >>
> >> - Original Message -
> >> From: John Whitton
> >> To: Model 100 Discussion
> >> Sent: Tuesday, December 08, 2015 11:04 PM
> >> Subject: Re: [M100] M100 power requirements
> >>
> >> *?*
> >>
> >> Hmm. I do not recall, but I'm betting that the supply was tied to
> the
> >> battery terminals, otherwise I would have had to make up a pigtail to
> use
> >> the jack. I wouldn't bet my life on that...
> >>
> >> As an aside, I attach here a plot of battery voltage vs. time. This
> >> was recorded using fully charged 2400mA NiMH batteries. Cutoff occured
> at
> >> 1407 minutes. Note the abrupt knee at the end of the useful battery
> >> charge/energy. That is characteristic of NiMH batteries. Alkalines have
> a
> >> more gradual slope
> >>
> >> John W.
> >>
> >>
> >>
> >> - Original Message -
> >> From: Josh Malone
> >> To: Model 100 Discussion
> >> Sent: Tuesday, December 08, 2015 6:14 PM
> >> Subject: Re: [M100] M100 power requirements
> >>
> >> Awesome, thank you. Any idea if this was measured with supply connected
> to
> >> the dc jack or the battery terminals?
> >>
> >> On Dec 8, 2015 5:53 PM, "John Whitton" <jwhit...@bellsouth.net> wrote:
> >>>
> >>> FWIW, find attached a .pdf graph of M102 power consumption. This was
> >>> compiled 6 years ago (hard to believe).
> >>>
> >>> John W.
> >>>
> >>> - Original Message -
> >>> From: Josh Malone
> >>> To: Model 100 Discussion
> >>> Sent: Tuesday, December 08, 2015 4:02 PM
> >>> Subject: Re: [M100] USB "juice pack"
> >>>
> >>> I just tested the power requirements of my 102. With the battery
> >>> connectors connected to a bench supply at 5 volts, it draws a very
> >>> consistent 65mA. I was expecting the current to vary slightly with CPU
> or
> >>> screen activity but it does not. I'm so used to CPU idle states which,
> of
> >>> course, the 8085 does not use :)
> >>>
> >>> I have one of these kicking around at home
> >>> (https://www.sparkfun.com/products/10968) so I'm thinking to
> construct a
> >>> LiPo-based AA battery replacement so I can recharge my 102 via USB.
> There's
> >>> also https://www.sparkfun.com/products/11231 but that's capable of
> WAY more
> >>> current than necessary and considerably more expensive.
> >>>
> >>> -Josh
> >>>
> >>> On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein <mhs.st...@gmail.com>
> wrote:
> >>>>
> >>>>
> >>>> Yeah, I was wondering about that, especially with WiFi; definitely
> >>>> sounds a little high. Too bad.
> >>>>
> >>>> Maybe Jeff's solution isn't such a bad idea after all ;-)
> >>>>
> >>>> Anyway, the M100 works fine on a "juice pack".
> >>>>
> >>>> m
> >>>>
>

Re: [M100] M100 power requirements

[Peter Vollan]

I can tell you that when I used to call BBSs at 300 baud with my Model
100, the AA batteries seemed to drain quickly.

On 9 December 2015 at 05:08, Josh Malone <josh.mal...@gmail.com> wrote:
> I noticed no change in the power draw on my 102 when using the serial port,
> although it wasn't actually connected to another device.
>
> On Dec 9, 2015 1:06 AM, "John Whitton" <jwhit...@bellsouth.net> wrote:
>>
>> Mike,
>>
>> M102, and it was running its own monitoring program, that's how it (I)
>> knew run time. When it pooped out, the last time was recorded. It was, in
>> fact , monitoring its own battery voltage via an ADIOS. One might argue that
>> the RS-232 ate some power, but it was only OPENed when making a measurement
>> at 5 minute intervals, then closed.
>>
>> If you recall, I also (later) embedded an A/D in a M102, which can
>> measure both external voltages as well as monitor battery voltage. I could
>> run the same test now, without having to hook anything up at all. Cheesy
>> video of that: https://www.youtube.com/watch?v=HMV2HKwrCCc
>>
>> John W.
>>
>> - Original Message -
>> From: Mike Stein
>> To: Model 100 Discussion
>> Sent: Wednesday, December 09, 2015 12:50 AM
>> Subject: Re: [M100] M100 power requirements
>>
>> Was this an M100 or a 102, and what if anything was it running?
>>
>> Looks like an app for the ADIOS ;-)
>>
>> m
>>
>> - Original Message -
>> From: John Whitton
>> To: Model 100 Discussion
>> Sent: Tuesday, December 08, 2015 11:04 PM
>> Subject: Re: [M100] M100 power requirements
>>
>> *?*
>>
>> Hmm. I do not recall, but I'm betting that the supply was tied to the
>> battery terminals, otherwise I would have had to make up a pigtail to use
>> the jack. I wouldn't bet my life on that...
>>
>> As an aside, I attach here a plot of battery voltage vs. time. This
>> was recorded using fully charged 2400mA NiMH batteries. Cutoff occured at
>> 1407 minutes. Note the abrupt knee at the end of the useful battery
>> charge/energy. That is characteristic of NiMH batteries. Alkalines have a
>> more gradual slope
>>
>> John W.
>>
>>
>>
>> - Original Message -
>> From: Josh Malone
>> To: Model 100 Discussion
>> Sent: Tuesday, December 08, 2015 6:14 PM
>> Subject: Re: [M100] M100 power requirements
>>
>> Awesome, thank you. Any idea if this was measured with supply connected to
>> the dc jack or the battery terminals?
>>
>> On Dec 8, 2015 5:53 PM, "John Whitton" <jwhit...@bellsouth.net> wrote:
>>>
>>> FWIW, find attached a .pdf graph of M102 power consumption. This was
>>> compiled 6 years ago (hard to believe).
>>>
>>> John W.
>>>
>>> - Original Message -
>>> From: Josh Malone
>>> To: Model 100 Discussion
>>> Sent: Tuesday, December 08, 2015 4:02 PM
>>> Subject: Re: [M100] USB "juice pack"
>>>
>>> I just tested the power requirements of my 102. With the battery
>>> connectors connected to a bench supply at 5 volts, it draws a very
>>> consistent 65mA. I was expecting the current to vary slightly with CPU or
>>> screen activity but it does not. I'm so used to CPU idle states which, of
>>> course, the 8085 does not use :)
>>>
>>> I have one of these kicking around at home
>>> (https://www.sparkfun.com/products/10968) so I'm thinking to construct a
>>> LiPo-based AA battery replacement so I can recharge my 102 via USB. There's
>>> also https://www.sparkfun.com/products/11231 but that's capable of WAY more
>>> current than necessary and considerably more expensive.
>>>
>>> -Josh
>>>
>>> On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein <mhs.st...@gmail.com> wrote:
>>>>
>>>>
>>>> Yeah, I was wondering about that, especially with WiFi; definitely
>>>> sounds a little high. Too bad.
>>>>
>>>> Maybe Jeff's solution isn't such a bad idea after all ;-)
>>>>
>>>> Anyway, the M100 works fine on a "juice pack".
>>>>
>>>> m
>>>>

Re: [M100] M100 power requirements

[Josh Malone]

I noticed no change in the power draw on my 102 when using the serial port,
although it wasn't actually connected to another device.
On Dec 9, 2015 1:06 AM, "John Whitton" <jwhit...@bellsouth.net> wrote:

> Mike,
>
> M102, and it was running its own monitoring program, that's how it (I)
> knew run time. When it pooped out, the last time was recorded. It was, in
> fact , monitoring its own battery voltage via an ADIOS. One might argue
> that the RS-232 ate some power, but it was only OPENed when making a
> measurement at 5 minute intervals, then closed.
>
> If you recall, I also (later) embedded an A/D in a M102, which can
> measure both external voltages as well as monitor battery voltage. I could
> run the same test now, without having to hook anything up at all. Cheesy
> video of that: https://www.youtube.com/watch?v=HMV2HKwrCCc
>
> John W.
>
> - Original Message -
> *From:* Mike Stein <mhs.st...@gmail.com>
> *To:* Model 100 Discussion <m100@lists.bitchin100.com>
> *Sent:* Wednesday, December 09, 2015 12:50 AM
> *Subject:* Re: [M100] M100 power requirements
>
> Was this an M100 or a 102, and what if anything was it running?
>
> Looks like an app for the ADIOS ;-)
>
> m
>
> - Original Message -
> *From:* John Whitton <jwhit...@bellsouth.net>
> *To:* Model 100 Discussion <m100@lists.bitchin100.com>
> *Sent:* Tuesday, December 08, 2015 11:04 PM
> *Subject:* Re: [M100] M100 power requirements
>
> *?*
>
> Hmm. I do not recall, but I'm betting that the supply was tied to the
> battery terminals, otherwise I would have had to make up a pigtail to use
> the jack. I wouldn't bet my life on that...
>
> As an aside, I attach here a plot of battery voltage vs. time. This
> was recorded using fully charged 2400mA NiMH batteries. Cutoff occured at
> 1407 minutes. Note the abrupt knee at the end of the useful battery
> charge/energy. That is characteristic of NiMH batteries. Alkalines have a
> more gradual slope
>
> John W.
>
>
>
> - Original Message -
> *From:* Josh Malone <josh.mal...@gmail.com>
> *To:* Model 100 Discussion <m100@lists.bitchin100.com>
> *Sent:* Tuesday, December 08, 2015 6:14 PM
> *Subject:* Re: [M100] M100 power requirements
>
> Awesome, thank you. Any idea if this was measured with supply connected to
> the dc jack or the battery terminals?
> On Dec 8, 2015 5:53 PM, "John Whitton" <jwhit...@bellsouth.net> wrote:
>
>> FWIW, find attached a .pdf graph of M102 power consumption. This was
>> compiled 6 years ago (hard to believe).
>>
>> John W.
>>
>> - Original Message -
>> *From:* Josh Malone <josh.mal...@gmail.com>
>> *To:* Model 100 Discussion <m100@lists.bitchin100.com>
>> *Sent:* Tuesday, December 08, 2015 4:02 PM
>> *Subject:* Re: [M100] USB "juice pack"
>>
>> I just tested the power requirements of my 102. With the battery
>> connectors connected to a bench supply at 5 volts, it draws a very
>> consistent 65mA. I was expecting the current to vary slightly with CPU or
>> screen activity but it does not. I'm so used to CPU idle states which, of
>> course, the 8085 does not use :)
>>
>> I have one of these kicking around at home (
>> https://www.sparkfun.com/products/10968) so I'm thinking to construct a
>> LiPo-based AA battery replacement so I can recharge my 102 via USB. There's
>> also https://www.sparkfun.com/products/11231 but that's capable of WAY
>> more current than necessary and considerably more expensive.
>>
>> -Josh
>>
>> On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein <mhs.st...@gmail.com> wrote:
>>
>>>
>>> Yeah, I was wondering about that, especially with WiFi; definitely
>>> sounds a little high. Too bad.
>>>
>>> Maybe Jeff's solution isn't such a bad idea after all ;-)
>>>
>>> Anyway, the M100 works fine on a "juice pack".
>>>
>>> m
>>>
>>>
>>

Re: [M100] M100 power requirements

[Josh Malone]

Awesome, thank you. Any idea if this was measured with supply connected to
the dc jack or the battery terminals?
On Dec 8, 2015 5:53 PM, "John Whitton"  wrote:

> FWIW, find attached a .pdf graph of M102 power consumption. This was
> compiled 6 years ago (hard to believe).
>
> John W.
>
> - Original Message -
> *From:* Josh Malone 
> *To:* Model 100 Discussion 
> *Sent:* Tuesday, December 08, 2015 4:02 PM
> *Subject:* Re: [M100] USB "juice pack"
>
> I just tested the power requirements of my 102. With the battery
> connectors connected to a bench supply at 5 volts, it draws a very
> consistent 65mA. I was expecting the current to vary slightly with CPU or
> screen activity but it does not. I'm so used to CPU idle states which, of
> course, the 8085 does not use :)
>
> I have one of these kicking around at home (
> https://www.sparkfun.com/products/10968) so I'm thinking to construct a
> LiPo-based AA battery replacement so I can recharge my 102 via USB. There's
> also https://www.sparkfun.com/products/11231 but that's capable of WAY
> more current than necessary and considerably more expensive.
>
> -Josh
>
> On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein  wrote:
>
>>
>> Yeah, I was wondering about that, especially with WiFi; definitely sounds
>> a little high. Too bad.
>>
>> Maybe Jeff's solution isn't such a bad idea after all ;-)
>>
>> Anyway, the M100 works fine on a "juice pack".
>>
>> m
>>
>>
>

[M100] M100 power requirements

[John Whitton]

FWIW, find attached a .pdf graph of M102 power consumption. This was compiled 6 
years ago (hard to believe).

John W.
  - Original Message - 
  From: Josh Malone 
  To: Model 100 Discussion 
  Sent: Tuesday, December 08, 2015 4:02 PM
  Subject: Re: [M100] USB "juice pack"


  I just tested the power requirements of my 102. With the battery connectors 
connected to a bench supply at 5 volts, it draws a very consistent 65mA. I was 
expecting the current to vary slightly with CPU or screen activity but it does 
not. I'm so used to CPU idle states which, of course, the 8085 does not use :)


  I have one of these kicking around at home 
(https://www.sparkfun.com/products/10968) so I'm thinking to construct a 
LiPo-based AA battery replacement so I can recharge my 102 via USB. There's 
also https://www.sparkfun.com/products/11231 but that's capable of WAY more 
current than necessary and considerably more expensive.


  -Josh



  On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein  wrote:



Yeah, I was wondering about that, especially with WiFi; definitely sounds a 
little high. Too bad.

Maybe Jeff's solution isn't such a bad idea after all ;-)

Anyway, the M100 works fine on a "juice pack".

m


batterypwr.pdf
Description: Adobe PDF document

Re: [M100] M100 power requirements

[Mike Stein]

Was this an M100 or a 102, and what if anything was it running?

Looks like an app for the ADIOS ;-)

m
  - Original Message - 
  From: John Whitton 
  To: Model 100 Discussion 
  Sent: Tuesday, December 08, 2015 11:04 PM
  Subject: Re: [M100] M100 power requirements


  *?*

  Hmm. I do not recall, but I'm betting that the supply was tied to the 
battery terminals, otherwise I would have had to make up a pigtail to use the 
jack. I wouldn't bet my life on that...

  As an aside, I attach here a plot of battery voltage vs. time. This was 
recorded using fully charged 2400mA NiMH batteries. Cutoff occured at 1407 
minutes. Note the abrupt knee at the end of the useful battery charge/energy. 
That is characteristic of NiMH batteries. Alkalines have a more gradual slope

  John W.


- Original Message - 
From: Josh Malone 
To: Model 100 Discussion 
Sent: Tuesday, December 08, 2015 6:14 PM
Subject: Re: [M100] M100 power requirements


Awesome, thank you. Any idea if this was measured with supply connected to 
the dc jack or the battery terminals?

On Dec 8, 2015 5:53 PM, "John Whitton" <jwhit...@bellsouth.net> wrote:

  FWIW, find attached a .pdf graph of M102 power consumption. This was 
compiled 6 years ago (hard to believe).

  John W.
- Original Message - 
From: Josh Malone 
To: Model 100 Discussion 
Sent: Tuesday, December 08, 2015 4:02 PM
Subject: Re: [M100] USB "juice pack"


I just tested the power requirements of my 102. With the battery 
connectors connected to a bench supply at 5 volts, it draws a very consistent 
65mA. I was expecting the current to vary slightly with CPU or screen activity 
but it does not. I'm so used to CPU idle states which, of course, the 8085 does 
not use :)


I have one of these kicking around at home 
(https://www.sparkfun.com/products/10968) so I'm thinking to construct a 
LiPo-based AA battery replacement so I can recharge my 102 via USB. There's 
also https://www.sparkfun.com/products/11231 but that's capable of WAY more 
current than necessary and considerably more expensive.


-Josh



On Thu, Dec 3, 2015 at 7:00 PM, Mike Stein <mhs.st...@gmail.com> wrote:



  Yeah, I was wondering about that, especially with WiFi; definitely 
sounds a little high. Too bad.

  Maybe Jeff's solution isn't such a bad idea after all ;-)

  Anyway, the M100 works fine on a "juice pack".

  m