Re: [M100] M100 power requirements
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" 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 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" 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" 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 > >>>> >
Re: [M100] M100 power requirements
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 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" 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" 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 >>>>
Re: [M100] M100 power requirements
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" 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" 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 >>> >>> >>
Re: [M100] M100 power requirements
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" 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
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" 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
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" 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 battery.pdf Description: Adobe PDF document
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" 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 >> >> >