If you're looking for safety and long life, a NiFe battery might be the best bet. However, they are heavy and contain liquid.
toggle quoted message
Show quoted text
On 01/11/2022 12:41 EDT JJ <ve1jot@...> wrote:
Consider getting a LifePO4 battery....less than half the weight, more
than twice the available power, non-flammable, not like explosive
lithium or gassy lead-acid..you can run these flat with NO damage plus
get <4000 cycles, whereas only about 500 cycles with lead-acid. Also my
ic-7300 likes the new batts better, as they do not sag in voltage under
load..check it out..better for the enviornment too!!
|
I don't agree with the "NO damage" statement. From looking at various brands they ALL show fewer cycles the deeper you discharge the battery. Is it as bad as a lead acid battery,no. But please don't misinform a new user to this type of battery.
I really like the LiFePo4 chemistry. I have 400Ah (4 x 100Ah) in a bank as well as some of the smaller ones. They are too expensive to not take good care of them.
Max KG4PID
On Tuesday, November 1, 2022, 11:41:52 AM CDT, JJ <ve1jot@...> wrote:
Consider getting a LifePO4 battery....less than half the weight, more
than twice the available power, non-flammable, not like explosive
lithium or gassy lead-acid..you can run these flat with NO damage plus
get <4000 cycles, whereas only about 500 cycles with lead-acid. Also my
ic-7300 likes the new batts better, as they do not sag in voltage under
load..check it out..better for the enviornment too!!
On 2022-11-01 11:16, Marty Hartwell wrote: > Hi Bill > > I have and use my FT-817 sometimes in portable operations, currently > my only rig for either > > V/U or HF opts, if I want to go digital I have my pi housed in a nice > case that has a 7" monitor. > > Its specifications say it requires 5.1v at 3A, and so I use a buck > converter from the 12V. The > > battery I am using is heavy from a lawn mower, so these days if I > can't drive to the op site I > > don't go, but here in TN we have quite a few parks I can drive up to a > place to set up. Nice > > for POTA. > > Have a good day. > > Marty kd8bj > > > On 10/31/22 15:47, Bill Cromwell wrote: >> Hi Marty, >> >> I looked at customer "questions" section and the manufacturer states >> 5V@2 amps and 12V@3 amps. I removed those batteries from my "shopping >> cart" since they won't actually meet my use needs. At the moment I am >> running 12V sealed lead-acid batteries (SLAB) at just over 7 >> Amp-hours. They are holding up well but are reaching end of life. >> Some of my gear draws up to 7 amps in transmit. If I only wanted them >> for QRP operation they would be suitable. Maybe I will buy *one* for >> that purpose. However, when I buy more suitable (to me) batteries >> those will certainly handle a QRP rig at the park. I run up to about >> fifty watts when I feel evil :) Less than one watt sometimes too so >> maybe there is some hope for me. >> >> I will look at other offerings from this and other manufacturers. >> >> 73, >> >> Bill KU8H >> >> bark less - wag more >> >> On 10/31/22 15:00, Marty Hartwell wrote: >>> Hi Bill >>> >>> I looked at the pictures on the left side that shows the different >>> views. The >>> >>> second one down showing the front with the switch and USB and 12V >>> >>> input/output the USB shows 5v/2A (Max). >>> >>> My pi is housed with a monitor and I know it says 5.1V/3A and it >>> does show >>> >>> low voltage warning, because I used a Buck Converter that had screw >>> terminals >>> >>> for the connections and had to remove the connectors and solder the >>> wires >>> >>> in/out to overcome the voltage loss., Maybe if you pi in run >>> headless it >>> >>> is ok with 2A at 12V, good luck. >>> >>> Nice looking battery if it works good. >>> >>> Marty kd8bj >>> >>> >>> On 10/31/22 12:19, Bill Cromwell wrote: >>>> Hi, >>>> >>>> I put two of them in my 'cart'. I didn't notice anything about a 2 >>>> amp limit on the 5 volts. And nothing on the 12 volts either. Where >>>> did i fail to look? >>>> >>>> 73, >>>> >>>> Bill KU8H >>>> >>>> bark less - wag more >>>> >>>> On 10/31/22 10:45, Marty Hartwell wrote: >>>>> >>>>> Hi >>>>> >>>>> I noticed the 5V is only rated at 2A, have you noticed any problem >>>>> with the pi which needs 3A >>>>> >>>>> I believe? >>>>> >>>>> Marty kd8bj >>>>> >>>>> >>>>> On 10/31/22 04:36, Vic WA4THR via groups.io wrote: >>>>>> Roy, the battery I use is this: >>>>>> >>>>>> <> >>>>>> >>>>>> which is nice in that it also provides a 5v connection for the >>>>>> RPi in addition to the 12v for the rig. Seems to run all day. >>>>>> >>>>>> =Vic= >>>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>> >>> >>> >> >> >> >> >> > > > > >
|
Consider getting a LifePO4 battery....less than half the weight, more than twice the available power, non-flammable, not like explosive lithium or gassy lead-acid..you can run these flat with NO damage plus get <4000 cycles, whereas only about 500 cycles with lead-acid. Also my ic-7300 likes the new batts better, as they do not sag in voltage under load..check it out..better for the enviornment too!!
toggle quoted message
Show quoted text
On 2022-11-01 11:16, Marty Hartwell wrote: Hi Bill
I have and use my FT-817 sometimes in portable operations, currently my only rig for either
V/U or HF opts, if I want to go digital I have my pi housed in a nice case that has a 7" monitor.
Its specifications say it requires 5.1v at 3A, and so I use a buck converter from the 12V. The
battery I am using is heavy from a lawn mower, so these days if I can't drive to the op site I
don't go, but here in TN we have quite a few parks I can drive up to a place to set up. Nice
for POTA.
Have a good day.
Marty kd8bj
On 10/31/22 15:47, Bill Cromwell wrote:
Hi Marty,
I looked at customer "questions" section and the manufacturer states 5V@2 amps and 12V@3 amps. I removed those batteries from my "shopping cart" since they won't actually meet my use needs. At the moment I am running 12V sealed lead-acid batteries (SLAB) at just over 7 Amp-hours. They are holding up well but are reaching end of life. Some of my gear draws up to 7 amps in transmit. If I only wanted them for QRP operation they would be suitable. Maybe I will buy *one* for that purpose. However, when I buy more suitable (to me) batteries those will certainly handle a QRP rig at the park. I run up to about fifty watts when I feel evil :) Less than one watt sometimes too so maybe there is some hope for me.
I will look at other offerings from this and other manufacturers.
73,
Bill KU8H
bark less - wag more
On 10/31/22 15:00, Marty Hartwell wrote:
Hi Bill
I looked at the pictures on the left side that shows the different views. The
second one down showing the front with the switch and USB and 12V
input/output the USB shows 5v/2A (Max).
My pi is housed with a monitor and I know it says 5.1V/3A and it does show
low voltage warning, because I used a Buck Converter that had screw terminals
for the connections and had to remove the connectors and solder the wires
in/out to overcome the voltage loss., Maybe if you pi in run headless it
is ok with 2A at 12V, good luck.
Nice looking battery if it works good.
Marty kd8bj
On 10/31/22 12:19, Bill Cromwell wrote:
Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
Hi Bill
I forgot to mention in previous reply, that if your op uses VNC for monitor on a cell or tablet your
pi may not draw more than 2A while in use. I am not sure I could see the screen on my cells maybe
on a tablet.
Marty kd8bj
toggle quoted message
Show quoted text
On 10/31/22 15:47, Bill Cromwell wrote: Hi Marty,
I looked at customer "questions" section and the manufacturer states 5V@2 amps and 12V@3 amps. I removed those batteries from my "shopping cart" since they won't actually meet my use needs. At the moment I am running 12V sealed lead-acid batteries (SLAB) at just over 7 Amp-hours. They are holding up well but are reaching end of life. Some of my gear draws up to 7 amps in transmit. If I only wanted them for QRP operation they would be suitable. Maybe I will buy *one* for that purpose. However, when I buy more suitable (to me) batteries those will certainly handle a QRP rig at the park. I run up to about fifty watts when I feel evil :) Less than one watt sometimes too so maybe there is some hope for me.
I will look at other offerings from this and other manufacturers.
73,
Bill KU8H
bark less - wag more
On 10/31/22 15:00, Marty Hartwell wrote:
Hi Bill
I looked at the pictures on the left side that shows the different views. The
second one down showing the front with the switch and USB and 12V
input/output the USB shows 5v/2A (Max).
My pi is housed with a monitor and I know it says 5.1V/3A and it does show
low voltage warning, because I used a Buck Converter that had screw terminals
for the connections and had to remove the connectors and solder the wires
in/out to overcome the voltage loss., Maybe if you pi in run headless it
is ok with 2A at 12V, good luck.
Nice looking battery if it works good.
Marty kd8bj
On 10/31/22 12:19, Bill Cromwell wrote:
Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
Hi Bill
I have and use my FT-817 sometimes in portable operations, currently my only rig for either
V/U or HF opts, if I want to go digital I have my pi housed in a nice case that has a 7" monitor.
Its specifications say it requires 5.1v at 3A, and so I use a buck converter from the 12V. The
battery I am using is heavy from a lawn mower, so these days if I can't drive to the op site I
don't go, but here in TN we have quite a few parks I can drive up to a place to set up. Nice
for POTA.
Have a good day.
Marty kd8bj
toggle quoted message
Show quoted text
On 10/31/22 15:47, Bill Cromwell wrote: Hi Marty,
I looked at customer "questions" section and the manufacturer states 5V@2 amps and 12V@3 amps. I removed those batteries from my "shopping cart" since they won't actually meet my use needs. At the moment I am running 12V sealed lead-acid batteries (SLAB) at just over 7 Amp-hours. They are holding up well but are reaching end of life. Some of my gear draws up to 7 amps in transmit. If I only wanted them for QRP operation they would be suitable. Maybe I will buy *one* for that purpose. However, when I buy more suitable (to me) batteries those will certainly handle a QRP rig at the park. I run up to about fifty watts when I feel evil :) Less than one watt sometimes too so maybe there is some hope for me.
I will look at other offerings from this and other manufacturers.
73,
Bill KU8H
bark less - wag more
On 10/31/22 15:00, Marty Hartwell wrote:
Hi Bill
I looked at the pictures on the left side that shows the different views. The
second one down showing the front with the switch and USB and 12V
input/output the USB shows 5v/2A (Max).
My pi is housed with a monitor and I know it says 5.1V/3A and it does show
low voltage warning, because I used a Buck Converter that had screw terminals
for the connections and had to remove the connectors and solder the wires
in/out to overcome the voltage loss., Maybe if you pi in run headless it
is ok with 2A at 12V, good luck.
Nice looking battery if it works good.
Marty kd8bj
On 10/31/22 12:19, Bill Cromwell wrote:
Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
I've had no issues at all with the RPi zero 2W running off the battery mentioned. I am also powering a small USB extender to allow 3 devices to be connected to the single Pi port. I recall some folks measuring actual current consumption being less than 1 amp on the Pi-zero, too. The uBitX that I am also powering from that battery draws something less than 3 amps on 12v. I have run both the Pi-zero 2 and the rig for hours off the battery, and for literally days leaving the wall-wart charger connected to the battery.
=Vic=
|
Hi Marty,
I looked at customer "questions" section and the manufacturer states 5V@2 amps and 12V@3 amps. I removed those batteries from my "shopping cart" since they won't actually meet my use needs. At the moment I am running 12V sealed lead-acid batteries (SLAB) at just over 7 Amp-hours. They are holding up well but are reaching end of life. Some of my gear draws up to 7 amps in transmit. If I only wanted them for QRP operation they would be suitable. Maybe I will buy *one* for that purpose. However, when I buy more suitable (to me) batteries those will certainly handle a QRP rig at the park. I run up to about fifty watts when I feel evil :) Less than one watt sometimes too so maybe there is some hope for me.
I will look at other offerings from this and other manufacturers.
73,
Bill KU8H
bark less - wag more
toggle quoted message
Show quoted text
On 10/31/22 15:00, Marty Hartwell wrote: Hi Bill
I looked at the pictures on the left side that shows the different views. The
second one down showing the front with the switch and USB and 12V
input/output the USB shows 5v/2A (Max).
My pi is housed with a monitor and I know it says 5.1V/3A and it does show
low voltage warning, because I used a Buck Converter that had screw terminals
for the connections and had to remove the connectors and solder the wires
in/out to overcome the voltage loss., Maybe if you pi in run headless it
is ok with 2A at 12V, good luck.
Nice looking battery if it works good.
Marty kd8bj
On 10/31/22 12:19, Bill Cromwell wrote:
Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
Hi Bill
I looked at the pictures on the left side that shows the different views. The
second one down showing the front with the switch and USB and 12V
input/output the USB shows 5v/2A (Max).
My pi is housed with a monitor and I know it says 5.1V/3A and it does show
low voltage warning, because I used a Buck Converter that had screw terminals
for the connections and had to remove the connectors and solder the wires
in/out to overcome the voltage loss., Maybe if you pi in run headless it
is ok with 2A at 12V, good luck.
Nice looking battery if it works good.
Marty kd8bj
toggle quoted message
Show quoted text
On 10/31/22 12:19, Bill Cromwell wrote: Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
Hi,
I put two of them in my 'cart'. I didn't notice anything about a 2 amp limit on the 5 volts. And nothing on the 12 volts either. Where did i fail to look?
73,
Bill KU8H
bark less - wag more
toggle quoted message
Show quoted text
On 10/31/22 10:45, Marty Hartwell wrote:
Hi
I noticed the 5V is only rated at 2A, have you noticed any problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via groups.io wrote:
Roy, the battery I use is this:
<>
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
On Monday 31 October 2022 05:36:28 am Vic WA4THR via groups.io wrote: Roy, the battery I use is this:
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic= Not bad, and it seems to have a lot of positive reviews. Is 2A on the 5V output enough to run the Pi? I haven't looked, but was of the impression that it needed a bit more than that... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
Hi
I noticed the 5V is only rated at 2A, have you noticed any
problem with the pi which needs 3A
I believe?
Marty kd8bj
On 10/31/22 04:36, Vic WA4THR via
groups.io wrote:
toggle quoted message
Show quoted text
Roy, the battery I use is this:
which is nice in that it also provides a 5v connection for the RPi
in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
Just in case you hadn't seen it, this video walks you through a BAP installation, Tryg. For the Pi-zero I only selected the minimum of programs to include to run WSJT-X. I installed LinPSK and Fldigi later off the Pi menu. I did not include Flrig (not needed as you can do rig control with WSJT-X or Fldigi directly) nor any of the winlink and such programs. There is also a support group for KM4ACK and BAP on the groups list.
=Vic=
|
Roy, the battery I use is this:
which is nice in that it also provides a 5v connection for the RPi in addition to the 12v for the rig. Seems to run all day.
=Vic=
|
"I didn't quite understand...did VNC from Android work only once for you?
?
If yes, what problems are you seeing with VNC?
?
Jerry"
--
Hey Jerry, all seems to be ok with VNC now except for a further issue involving a Chromebook but I will carry on. I tried most of yesterday trying the get Build-a-Pi to work for me. I gave up well after midnight with a mushed brain. I anm sure that it would be (in fact from what I understand amongst the best).
THEN I spent today trying to get Ham Pi running and that was fine until it would not talk to VNC the way I would have liked.
Accurate time out and about will be via another phone but using an app called Satellite Check (which I really like) or the local FM or AM BC stations. One of these days someone will give me an IWC MK11 :-) .
I want to persist with HamPi but divorcing myself from the shack is a thing.
Vic, I was thinking about the uBitx and I may just assemble it as designed, I did mess about with the PiZero 1W yesterday but I am going to put that on the back burner as there a few other projects that I can think of for it here - a weather station being one - I live just 50m from the Atlantic Ocean. I am going to try again with HamPi and probably the BAP project too. I have two new 32gb SanDisk microSD cards so it will be good to have both options. The Inovato Quadra that I am expecting says it has Bullseye preinstalled so Jason's project may win out for that computer I hope. Really hope as I have learned that the computer is running a distro called Armbian. The internal RAM is also 2gb so I may not have enough. I don't really know. Thank you for allowing me to share the article.
FWIW @ Roy, I am using a RoyPower 12aH LiFePo for everything. I do have a? DC 12480 Li-ion too that I got ages ago. It tops out at 11.9v the RoyPow is 12.7v.
Cheers,
Tryg
--
|
On Saturday 29 October 2022 04:39:16 am Vic WA4THR via groups.io wrote: I really enjoy the portability of the zero setup and everything runs off a single Li-ion battery and lasts all day. Attached is an article I wrote for a club on my setup.
What are you using for a battery? -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
For the most ultra-accurate time, a GPS with PPS (packet per second)
setup will be the most accurate.? The next most accurate would be a
machine using NTP via the Internet.? A GPS receiver without a PPS
signal might be a bit more accurate but I'm not a time expert (a
very very deep topic btw). ? The least accurate would be to solely
use an RTC setup for accurate time.
To your second question about if an RTC's time gets updated from
NTP, the answer here is rather convoluted as it depends on your
chosen time synchronization tool (usually chosen by your choice of
distro).? If you're using a modern systemd based distro, the
systemd-timesyncd tool currently does NOT have a feature to keep the
RTC's time current.? You can work around this with simple cron or
shutdown scripts (this is what I do).? For example:
The crony system DOES have the ability to do this via it's "rtcsync"
option -
Anyway, here is a decent high level read about the various NTP tools
with Linux:
--David
KI6ZHD
On 10/29/2022 03:42 PM, Douglas Pervine
wrote:
toggle quoted message
Show quoted text
I have RPi setups with RTC or GPS w/PPS.
I'm just wondering which is the better setup for maintaining
accurate time.
Does the RTC get updated regularly via the NTP source on the
Internet?? Or is the time stored in the RTC only provide time
during boot/lack of NTP source?
On my other system.? GPS w/PPS provides accurate time but it takes
a few minutes to achieve this fix.
I was just wondering.? I'd like to configure my RPi's the same.
Any assistance would be greatly appreciated.?
|
The GPS with PPS is more accurate but any property configuration with GPS and/or NTP (using chrony) should be close enough. The RTC just helps retain that me during boot.?
When set up for RTC, the pi takes the time from the RTC module at boot.? The pi also periodically checks the RTC and adjusts itself to it and has a "drift" file that it uses to correct itself.? You can set it up in cron to check the ntp servers and save the time to the RTC as well
Get
|
When set up for RTC, the pi takes the time from the RTC module at boot.? The pi also periodically checks the RTC and adjusts itself to it and has a "drift" file that it uses to correct itself.? You can set it up in cron to check the ntp servers and save the time to the RTC as well
Get
|
I have RPi setups with RTC or GPS w/PPS.
I'm just wondering which is the better setup for maintaining accurate time.
Does the RTC get updated regularly via the NTP source on the Internet?? Or is the time stored in the RTC only provide time during boot/lack of NTP source?
On my other system.? GPS w/PPS provides accurate time but it takes a few minutes to achieve this fix.
I was just wondering.? I'd like to configure my RPi's the same.
Any assistance would be greatly appreciated.?
|
Thanks, Tryg. Yes, you can run this setup in the field away from any WiFi network or phone connection and run headless, connecting to an Android tablet. It helps to be using an UPS dongle to get accurate time information, but you can sometimes get close using an accurate watch. The software I am using on my uBitX has a built-in WSPR mode that doesn't need any external computer and I have used that to test portable antennas just setting my watch by WWV and watching the second hand to initiate the mode, then getting reception reports later. My rig is the V4, but a version the same software can run on any of the uBitX radios with a variety of displays including the original 2-line LCD. Here is a link to a number of articles and you are welcome to share any of mine:
One of those shows the interior of mine with a list of mods and links to source information. On a recent vacation at the beach I used mine with a compact 40m EFHW antenna and operating on very limited times before or after family was in bed I worked 28 countries, mostly in digital modes, from Australia to Greece during the week.?
=Vic=
|
Nigel Gunn, G8IFF/W8IFF
Vic WA4THR
EI7CLB
John Hays - K7VE / WRJT-215