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Expensive:?
Slightly less expensive:?
Either one will accept up to 24vdc. Not sure how well the Pi Juice will work with the RP5 though.?
toggle quoted message
Show quoted text
On Nov 6, 2024, at 11:44, Michael WA7SKG via groups.io <wa7skg@...> wrote:
? I ended up buying a bunch of buck converters that will take 10-24V in
and give a constant adjustable output. I have a couple devices (like
weather radio) that run from 9V wall warts as well as some RaspberryPis
that need a little over 5V and run everything off of a big 12V power
supply. I set the RPi converters for about 5.3V and never see the little
low voltage warnings.
It has always amazed me with the popularity among hams of the
RaspberryPi that more 12V power solutions are not out there. I loved the
MoPi2 hat, very versatile. But, unfortunately, it was discontinued. I
wish I had bought several of them at the time. It is sad that there is
nothing comparable on the market, especially with the higher power
demands of the newer Pi versions.
Michael WA7SKG
Bo W4GHV wrote on 11/6/24 8:22 AM:
I'm tired of it!
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C cables, I
ordered some SHORT one and USB C to micro adapters for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The wires in
normal USB cables are way too small for several amps.
No problems here with supplies provided with my Pi4's.
Ideas?
--
73, Bo W4GHV since '54
|
As an EE
you should know the reason. When you use a boost converter to increase the
nominal 5V, you reduce the total current available AND increase chip count
on the board.? The Pi foundation has always stated phone chargers were
not acceptable power sources for any pi product.? They are designed to
charge 3.7V to 4.2V phone batteries.? They may put out 3 amps, but in
doing so, their voltage drops.? The voltage drop is t critical since
the voltage is reduced and regulated to charge the phones
Get
Having a BSEE,
I've always wondered why the developers of this Ri5 have a need for the
extra +.1v on the 5v input, that the other versions are not critical of.
I'm thinking it's to ensure there is ample current available. 5v is
ubiquitous in the computer world but the Rpi5 is wanting to need that extra
.1 volts. Seems like this could be handled by the circuitry instead of the
power source.?
?
Greg
KE5DXA?
|
Having a BSEE, I've always wondered why the developers of this Ri5 have a need for the extra +.1v on the 5v input, that the other versions are not critical of. I'm thinking it's to ensure there is ample current available. 5v is ubiquitous in the computer world but the Rpi5 is wanting to need that extra .1 volts. Seems like this could be handled by the circuitry instead of the power source.?
?
Greg
KE5DXA?
|
Check out this thread.
?
?
Scroll down and you will find some Amazon links for products I tried. As stated previously, getting off the phone charger products is the key.
?
73
Dave
WB9TEN
|
IIRC the RPi4 states 5.2v. but what is 0.1v between fiends.
I use old recycled 'Traco Power' 5v 5A smpsus and supply power
direct to the Pin Headers using two power and two sense cables. I
had a good free source of the Traco, long gone, sadly.
On 06/11/2024 18:25, Bjorn Pehrson via
groups.io wrote:
toggle quoted message
Show quoted text
my experience is that most wall warts provide 4.99
volts and the rpis want 5.1
On November 6, 2024 5:22:28 PM GMT+01:00, Bo
W4GHV <bobarr@...> wrote:
I'm tired of it!?
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C
cables, I ordered some SHORT one and USB C to micro adapters
for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The
wires in normal USB cables are way too small for several
amps.
?
No problems here with supplies provided with my Pi4's.
?
Ideas?
--
73, Bo W4GHV since '54
|
|
| |
Sent while portable! please excuse typos.
toggle quoted message
Show quoted text
On 6 Nov 2024, at 18:44, Michael WA7SKG via groups.io <wa7skg@...> wrote:
?
I ended up buying a bunch of buck converters that will take 10-24V inand give a constant adjustable output. I have a couple devices (likeweather radio) that run from 9V wall warts as well as some RaspberryPisthat need a little over 5V and run everything off of a big 12V powersupply. I set the RPi converters for about 5.3V and never see the littlelow voltage warnings.It has always amazed me with the popularity among hams of theRaspberryPi that more 12V power solutions are not out there. I loved theMoPi2 hat, very versatile. But, unfortunately, it was discontinued. Iwish I had bought several of them at the time. It is sad that there isnothing comparable on the market, especially with the higher powerdemands of the newer Pi versions.Michael WA7SKGBo W4GHV wrote on 11/6/24 8:22 AM:I'm tired of it!
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C cables, I
ordered some SHORT one and USB C to micro adapters for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The wires in
normal USB cables are way too small for several amps.
No problems here with supplies provided with my Pi4's.
Ideas?
--
73, Bo W4GHV since '54
I ended up buying a bunch of buck converters that will take 10-24V in
and give a constant adjustable output. I have a couple devices (like
weather radio) that run from 9V wall warts as well as some RaspberryPis
that need a little over 5V and run everything off of a big 12V power
supply. I set the RPi converters for about 5.3V and never see the little
low voltage warnings.
It has always amazed me with the popularity among hams of the
RaspberryPi that more 12V power solutions are not out there. I loved the
MoPi2 hat, very versatile. But, unfortunately, it was discontinued. I
wish I had bought several of them at the time. It is sad that there is
nothing comparable on the market, especially with the higher power
demands of the newer Pi versions.
Michael WA7SKG
Bo W4GHV wrote on 11/6/24 8:22 AM:
toggle quoted message
Show quoted text
I'm tired of it!
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C cables, I
ordered some SHORT one and USB C to micro adapters for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The wires in
normal USB cables are way too small for several amps.
No problems here with supplies provided with my Pi4's.
Ideas?
--
73, Bo W4GHV since '54
|
my experience is that most wall warts provide 4.99 volts and the rpis want 5.1
toggle quoted message
Show quoted text
On November 6, 2024 5:22:28 PM GMT+01:00, Bo W4GHV <bobarr@...> wrote:
I'm tired of it!?
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C cables, I ordered some SHORT one and USB C to micro adapters for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The wires in normal USB cables are way too small for several amps.
?
No problems here with supplies provided with my Pi4's.
?
Ideas?
--
73, Bo W4GHV since '54
|
I'm tired of it!?
The voltage drop in most or all USB cables is too much.
Hearing about all the 'high current' capability of USB C cables, I ordered some SHORT one and USB C to micro adapters for my old PI's.
Hopefully a solution.
I have dozens of 5v wall warts and none seem to work. The wires in normal USB cables are way too small for several amps.
?
No problems here with supplies provided with my Pi4's.
?
Ideas?
--
73, Bo W4GHV since '54
|
Re: Digital Voice via RaspberryPi
You can do this using Analog Reflector in a DVSwitch server but unless you have some Linux command line experience it is difficult to implement.?
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
Michael,
So something like the ClearNode but the price is eye-watering.
I could buy a DMR radio, Pi and MMDVM hat for much less, and drive everything without needing a Smart Phone and app to configure.
In fact if you read the manual you will see why this isn't more common. A DMR radio sets the sending and receiving codes. On a talk group it displays the call sign of who is transmitting.
Whilst you can do some of this via DTMF codes some has to be configured on the PI and as PIs don't have keyboards it can be fun.
Dave
G4UGM
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Show quoted text
On 03/11/2024 16:12, Michael WA7SKG via groups.io wrote: I found a bunch of stuff about DroidStar and other stuff using an AMBE
dongle, but, so far, nothing about how to interface it to a radio. They
all seem to be some kind of interface to on line nodes like AllStar.
My goal is to be able to use P25 and DMR on an existing analog radio via
a RaspberryPi and audio interface.
Thanks,
Michael WA7SKG
Bob AF9W wrote on 11/1/24 7:35 AM:
Droidstar allows all but D-Star to work without the AMBE chip including
the new M17 mode. Google it.
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
Don't think you can do that.
A hotspot is an interface between your digital radio and the internet.
Most common hand held FM radios have neither the bandwidth or short enough switching times.
toggle quoted message
Show quoted text
On 03/11/2024 11:12 EST Michael WA7SKG <wa7skg@...> wrote:
I found a bunch of stuff about DroidStar and other stuff using an AMBE
dongle, but, so far, nothing about how to interface it to a radio. They
all seem to be some kind of interface to on line nodes like AllStar.
My goal is to be able to use P25 and DMR on an existing analog radio via
a RaspberryPi and audio interface.
Thanks,
Michael WA7SKG
Bob AF9W wrote on 11/1/24 7:35 AM:
Droidstar allows all but D-Star to work without the AMBE chip including
the new M17 mode. Google it.
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
As I understand it, you can use a standard sound device like a
Digirig to do modes like Dstar (GMSK), YSF (C4FM), and P25-Phase1
but DMR requires deeper control of the RF waveform.? As such, you
need an RF board like a "MMDVM hotspot" board / a Zumspot board /
DV-Mega / OpenSpot appliance / etc (which can do all modes btw):
?? #Here is an example of a MMDVM hotspot RF board
??
Here is one guide I found on how to set this all up yourself:
??
If you rather buy something pre-built and with support, consider an
OpenSpot:
??
--David
KI6ZHD
On 11/03/2024 08:12 AM, Michael WA7SKG
wrote:
toggle quoted message
Show quoted text
I found a bunch of stuff about DroidStar and other
stuff using an AMBE
dongle, but, so far, nothing about how to interface it to a radio.
They
all seem to be some kind of interface to on line nodes like
AllStar.
My goal is to be able to use P25 and DMR on an existing analog
radio via
a RaspberryPi and audio interface.
Thanks,
Michael WA7SKG
Bob AF9W wrote on 11/1/24 7:35 AM:
Droidstar allows all but D-Star to work
without the AMBE chip including
the new M17 mode. Google it.
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
I found a bunch of stuff about DroidStar and other stuff using an AMBE
dongle, but, so far, nothing about how to interface it to a radio. They
all seem to be some kind of interface to on line nodes like AllStar.
My goal is to be able to use P25 and DMR on an existing analog radio via
a RaspberryPi and audio interface.
Thanks,
Michael WA7SKG
Bob AF9W wrote on 11/1/24 7:35 AM:
toggle quoted message
Show quoted text
Droidstar allows all but D-Star to work without the AMBE chip including
the new M17 mode. Google it.
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
Droidstar allows all but D-Star to work without the AMBE chip including the new M17 mode. Google it.?
--
Bob AF9W
|
Re: Digital Voice via RaspberryPi
I suspect that you'd also need an AMBE2 dongle for this, and also a USB sound card for handling the microphone input - presuming, of course, that he was talking about actually working the digital modes, rather than just monitoring them.
?
73
Phil
2E0HGU
|
Re: Digital Voice via RaspberryPi
There may be some smoke.
?
However, there are products such as the ThumbDV from NW Digital Radio (and other dongles that contain an AMBE chip) that allow the use of software such as BlueDV that allow one to use any device such as a smartphone or PC, so piping a 2m HT’s signal from a digirig or similar device doesn’t seem like too far of a stretch, but it would be far easier to just get a digital handheld and/or use the audio in/out of the computer to which the ThumbDV (or other device) was connected.?
Some people, myself included on occasion, just like to see if it can be done, regardless of the ultimate feasibility of the solution.
?
So yeah… most likely possible. Not the most user-friendly solution, and convoluted, but not much more convoluted than a DMR->D-STAR gateway on a hotspot, since an AMBE chip is required for that also. (Analog->Digital is not available on the Openspot 4 Pro, from what I understand.)
?
Once my brain heals and I catch up on other projects I might give it a try.
?
Cheers and 73,
Mike AC0K
|
Re: Digital Voice via RaspberryPi
Never used it and think you need an interface but this is the software.
I know a few people that use this but it has never been anything I am interested in but you should get plenty of help there.
?
Regards Richard G7OED
|
Re: Digital Voice via RaspberryPi
On 31/10/2024 23:33, Michael WA7SKG via groups.io wrote: Overheard a conversation on a repeater the other day that was very
interesting.
The person claimed he had a basic 2 meter analog radio and connected a
Raspberry Pi via Digirig interface which allowed him to run all digital
modes, Fusion, DMR, D-Star, P25, and others. I would be very interested
in this. Does anybody have any idea on what software this may be? Or is
it just a lot of smoke?
Well you would need a 2mtr radio with a 9600 baud packet port as most of the DigiModes use similar types of modulation to get two audio channels into one normal channel. You could then probably tweak DudeStar or DVBridge to decode the DMR FSK..
--
73,
Michael WA7SKG
Dave G4UGM
"Any day you do not learn one new thing is a wasted day."
|
Digital Voice via RaspberryPi
Overheard a conversation on a repeater the other day that was very
interesting.
The person claimed he had a basic 2 meter analog radio and connected a
Raspberry Pi via Digirig interface which allowed him to run all digital
modes, Fusion, DMR, D-Star, P25, and others. I would be very interested
in this. Does anybody have any idea on what software this may be? Or is
it just a lot of smoke?
--
73,
Michael WA7SKG
"Any day you do not learn one new thing is a wasted day."
|
Greg Sanders
mike
Spence G5STO
Michael WA7SKG
Bo W4GHV
Bob AF9W
Nigel Gunn, G8IFF/W8IFF
Phil Culmer 2E0HGU