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Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
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Look on the hamvoip forum on groups io. There are some recommended there.?
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On Jan 4, 2021, at 3:20 PM, jeremy_georges via groups.io <jeremy_georges@...> wrote:
?Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
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I'm using this one in my 24/7 Winlink gateway, and it's been doing fine for a couple of months now.? I gave it a weeklong full load (4A) bench test before putting it online.
ed, k9ew
On Mon, Jan 4, 2021 at 3:20 PM jeremy_georges via <jeremy_georges= [email protected]> wrote: Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
|
I've got dozens of these DC-DC converters in use. They easily power every
system I've tried, up through an RPi4B w/4GB RAM and one USB3-SATA
attached SSD drive.
I purchase 10 at the time.
73, David KB4FXC
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Show quoted text
On Mon, 4 Jan 2021, jeremy_georges via groups.io wrote: Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
|
On Monday, January 4, 2021, 4:36:20 p.m. EST, David McGough <kb4fxc@...> wrote:
I've got dozens of these DC-DC converters in use. They easily power every
system I've tried, up through an RPi4B w/4GB RAM and one USB3-SATA
attached SSD drive.
I purchase 10 at the time.
73, David KB4FXC
On Mon, 4 Jan 2021, jeremy_georges via groups.io wrote:
> Folks,
>
> Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
>
> There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
>
> Thanks
> -J
>
>
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This is what I use:
Might be a bit more expensive than ebay but sourced from a us company and comes prewired with power poles. Plug and go.?
Eric Af6ep?
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Show quoted text
On Jan 4, 2021, at 1:20 PM, jeremy_georges via groups.io <jeremy_georges@...> wrote:
?Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
|
?I've had LOTS of failures with these
"CPT" units.? They are packaged very nicely, but we've seen lots
of issues / failures.
The ones David mentioned are way better IMHO:
Kevin W3KKC
On 1/4/2021 5:06 PM, dshack@... wrote:
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I'd be careful about the "CPT" modules.? In the description it says "Nominal current rating:? 12A", but on the case of the unit it says "5V 3A".
-ed, k9ew
On Monday, January 4, 2021, 4:36:20 p.m. EST, David McGough < kb4fxc@...> wrote:
I've got dozens of these DC-DC converters in use. They easily power every
system I've tried, up through an RPi4B w/4GB RAM and one USB3-SATA
attached SSD drive.
I purchase 10 at the time.
73, David KB4FXC
On Mon, 4 Jan 2021, jeremy_georges via wrote:
> Folks,
>
> Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
>
> There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
>
> Thanks
> -J
>
>
|
The best 5V power supply I've ever found for a Pi is a lighter plug USB adapter from Amazon, the "Amazon Basics" model. Take it apart and discard the shell, solder power in and a compatible USB cable out onto the PCB, and suspend it in a discarded prescription drug bottle.? https://cloud.hamoperator.org/s/CWobsjmXnTHfjRk
3 Amps at 5.2V, and more reliable than the CPT things which I've stopped purchasing.
Danny
From: "jeremy_georges via groups.io" <jeremy_georges@...>
To: "repeater-builder" <[email protected]>
Sent: Monday, January 4, 2021 3:20:30 PM
Subject: [repeater-builder] Regulator - 12vdc to 5vdc for Raspberry Pi
Folks,
Any luck on a specific regulator to power a Raspberry PI for an Allstar, Echolink, etc controller? Ideally something with minimal RF noise since these are all switchers/buck type regulators. I could build something...but at this point I would just rather buy an off the shelf product with the integrated micro-USB adapter already in place.
There are some listed on Amazon with mixed reviews. But thought I'd ask the group to see if you've had any real world experience with any of these.
Thanks
-J
|
Hi Kevin, On the one David suggested (board only), one of the views describes a heatsink should be installed on the chip (see pic) if the intended load would exceed 2.5 amps. Since all the info dynamics of these rascals are the same, I'll bet they incorporate that same board, but the "failing" units didn't have the heatsink. Just a thought. Frank N6CES
On Mon, Jan 4, 2021, 5:13 PM Kevin Custer < kuggie@...> wrote:
?I've had LOTS of failures with these
"CPT" units.? They are packaged very nicely, but we've seen lots
of issues / failures.
The ones David mentioned are way better IMHO:
Kevin W3KKC
On 1/4/2021 5:06 PM, dshack@... wrote:
|
Hi Frank,
I've found that the "CPT" power supplies are not all created equal. It
would seem the manufacturers figure since it's hidden in potted epoxy, no
one can see what was actually used!!!
Early "CPT" power supplies that I purchased worked GREAT! And, I
recommended them for HamVoIP RPi2/3 users (this pre-dated the RPi4). Then,
I got some more batches of these supplies that they were junk--they ALL
failed, in time. Grrrr.
I dug one of these older "CPT" units open one afternoon, and found this
exact board hidden inside:
Here is the converter chip datasheet:
Anyhow, my reasoning for avoiding the "CPT" modules is that you can't tell
what you're actually getting, which is disappointing, because the potted
converter modules have a very nice form factor.
73, David KB4FXC
toggle quoted message
Show quoted text
On Mon, 4 Jan 2021, Frank Perkins wrote: Hi Kevin,
On the one David suggested (board only), one of the views describes a
heatsink should be installed on the chip (see pic) if the intended load
would exceed 2.5 amps.
Since all the info dynamics of these rascals are the same, I'll bet they
incorporate that same board, but the "failing" units didn't have the
heatsink.
Just a thought.
Frank N6CES
On Mon, Jan 4, 2021, 5:13 PM Kevin Custer <kuggie@...> wrote:
I've had LOTS of failures with these "CPT" units. They are packaged very
nicely, but we've seen lots of issues / failures.
The ones David mentioned are way better IMHO:
Kevin W3KKC
On 1/4/2021 5:06 PM, dshack@... wrote:
DC-DC 12V to 5V Mini/Micro/A type Single USB Converter Step Down Power
Module | eBay
<>
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Hi David, About 30min before I read Kevin's text, I purchased two "Car Powered Technologies" units for $13. See pic. The other ads clearly showed just the letters CPT on the label. Unfortunately, I didn't make the connection it was the same outfit. So hopefully they're not potted, and I'll crack one open and see if there's a way to stick a heatsink on the chip. I'll keep you posted. I likewise will use it on a Pi3 with Hamvoip Allstar. Presently using the wart that came with the Pi, but want all my repeater power except fan to be 13.8vdc. Frank N6CES
On Mon, Jan 4, 2021, 6:30 PM David McGough < kb4fxc@...> wrote:
Hi Frank,
I've found that the "CPT" power supplies are not all created equal. It
would seem the manufacturers figure since it's hidden in potted epoxy, no
one can see what was actually used!!!
Early "CPT" power supplies that I purchased worked GREAT! And, I
recommended them for HamVoIP RPi2/3 users (this pre-dated the RPi4). Then,
I got some more batches of these supplies that they were junk--they ALL
failed, in time.? Grrrr.
I dug one of these older "CPT" units open one afternoon, and found this
exact board hidden inside:
Here is the converter chip datasheet:
Anyhow, my reasoning for avoiding the "CPT" modules is that you can't tell
what you're actually getting, which is disappointing, because the potted
converter modules have a very nice form factor.
73, David KB4FXC
On Mon, 4 Jan 2021, Frank Perkins wrote:
> Hi Kevin,
> On the one David suggested (board only), one of the views describes a
> heatsink should be installed on the chip (see pic) if the intended load
> would exceed 2.5 amps.
> Since all the info dynamics of these rascals are the same, I'll bet they
> incorporate that same board, but the "failing" units didn't have the
> heatsink.
> Just a thought.
> Frank N6CES
>
> On Mon, Jan 4, 2021, 5:13 PM Kevin Custer <kuggie@...> wrote:
>
> >? I've had LOTS of failures with these "CPT" units.? They are packaged very
> > nicely, but we've seen lots of issues / failures.
> >
> > The ones David mentioned are way better IMHO:
> >
> >
> > Kevin W3KKC
> >
> >
> >
> > On 1/4/2021 5:06 PM, dshack@... wrote:
> >
> > DC-DC 12V to 5V Mini/Micro/A type Single USB Converter Step Down Power
> > Module | eBay
> > <>
> >
> >
> >
> >
>
>
>
>
>
>
|
No one is using the converter module for the STM board from repeater
builder?
I'm just using some stepdown converters from ebay designed for
motorcycles, but will be cutting over to the $5 stm board hat.
Have fun,
Alan
KM4BA
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I do have the RB DC/DC converters in use. It is working but I have not measured the ripple voltage.
73 de Veijo? ti 5. tammik. 2021 klo 15.38 Alan Barrow < ml9003@...> kirjoitti:
No one is using the converter module for the STM board from repeater
builder?
I'm just using some stepdown converters from ebay designed for
motorcycles, but will be cutting over to the $5 stm board hat.
Have fun,
Alan
KM4BA
|
I've got, had, 2-3 of those. After running a Pi and RA- interface for a month or two, one of them popped and smoked... tossed them.
The PowerWerx USB Buddy gadgets haven't failed yet.? Still experimenting with the ~$4 adjustable buck-converter units as part of building up some 3S Lithium battery backup packs.
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I use the same “mini 360” regulator that RB uses on the Pi-hat STM32-DVM on my STM32-DVM-MTR2K and STM32-DVM-MASTR3 modems. Scott has had really good luck in sourcing his, but I found that often times I get regulators with sub-par inductors. This also led me to realize that the input and output capacitors don’t match the regulator’s specifications. The chip in the Mini 360 does produce some noise, but it’s greatly diminished when I change the input and output caps as well as inductors for the right values and known good components. Other than a couple of failures based on my own soldering skills, I’ve had no failures with the mini 360 once the inductor is changed, and the noise produced is also reduced with the correct capacitors. Before that, I had…. Too many failures.
I've got, had, 2-3 of those. After running a Pi and RA- interface for a month or two, one of them popped and smoked... tossed them. The PowerWerx USB Buddy gadgets haven't failed yet.? Still experimenting with the ~$4 adjustable buck-converter units as part of building up some 3S Lithium battery backup packs.
Cort Buffington 785-865-7206
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Cort..
would you like to post the values of the caps and inductor
Dan
On Tuesday, January 5, 2021, 9:59:03 a.m. EST, Cort Buffington, N0MJS via groups.io <n0mjs@...> wrote:
I use the same “mini 360” regulator that RB uses on the Pi-hat STM32-DVM on my STM32-DVM-MTR2K and STM32-DVM-MASTR3 modems. Scott has had really good luck in sourcing his, but I found that often times I get regulators with sub-par inductors. This also led me to realize that the input and output capacitors don’t match the regulator’s specifications. The chip in the Mini 360 does produce some noise, but it’s greatly diminished when I change the input and output caps as well as inductors for the right values and known good components. Other than a couple of failures based on my own soldering skills, I’ve had no failures with the mini 360 once the inductor is changed, and the noise produced is also reduced with the correct capacitors. Before that, I had…. Too many failures.
I've got, had, 2-3 of those. After running a Pi and RA- interface for a month or two, one of them popped and smoked... tossed them. The PowerWerx USB Buddy gadgets haven't failed yet.? Still experimenting with the ~$4 adjustable buck-converter units as part of building up some 3S Lithium battery backup packs.
Cort Buffington 785-865-7206
|
On Monday, January 4, 2021 1:20:30 PM PST jeremy_georges via groups.io wrote:
> Folks,
>
> Any luck on a specific regulator to power a Raspberry PI for an Allstar,
> Echolink, etc controller? Ideally something with minimal RF noise since
> these are all switchers/buck type regulators. I could build something...but
> at this point I would just rather buy an off the shelf product with the
> integrated micro-USB adapter already in place.
>
> There are some listed on Amazon with mixed reviews. But thought I'd ask the
> group to see if you've had any real world experience with any of these.
Aside from the suggested supplies that others have given you might want to try one of these.
I've used early models of this:? ?on a dozen remote sites.?? The current models accept 5.5-24v or 5.5-32v depending on model and also provide additional useful features.
I'm in the process of qualifiying this UPS:? ? It will power any of the RPi? models and is usable with an input of 5.5-18v (suitable for use with Solar panels)
--
Ken - N7IPB
Email: n7ipb@...
Pacific Northwest 220 repeater system: http://pnw220.net
PGP Sig: F42B EF90 3CD3 31C7 3056? 122E 993A 7B2E 5138 C42A
If you think you are too small to make a difference.?
Try sleeping with a mosquito. - Dalai Lama
|
These are the ones I use.? They are nice to reassure you that the Pi and modem are getting the correct voltage.? You can check the supply voltage at the same time by pushing a button on the unit.? I have put about 25 of these in service over the last five years and have had no failures.? I connect the power out to a couple of the pins on the modem board GPIO and power the modem and Pi.? Do not connect a 5V source directly to the Pi when using this configuration.
<https://www.ebay.com/itm/DC-DC-LM2596-Power-Supply-Buck-Converter-Step-down-Module-LED-Display-Voltmeter/402421639705?hash=item5db232ea19:g:miQAAOSwHfpfWG6Y>
73 - Jim? W5ZIT
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Just as an FYI to all: Scott has had really good luck in sourcing his... Yes and no. We also had some "bad" ones sneak into the pool. Since we got burned (literally) a few times, we are now carefully testing each batch we get and reworking them as necessary. (changing parts values to those recommenced by the data sheets.) Since we have started doing the rework and test, we have had ZERO failures that we know about. (Knock on wood) Scott Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Road Boswell, PA 15531 On 1/5/2021 9:58 AM, Cort Buffington, N0MJS via groups.io wrote: I use the same “mini 360” regulator that RB uses on the Pi-hat STM32-DVM on my STM32-DVM-MTR2K and STM32-DVM-MASTR3 modems. Scott has had really good luck in sourcing his, but I found that often times I get regulators with sub-par inductors. This also led me to realize that the input and output capacitors don’t match the regulator’s specifications. The chip in the Mini 360 does produce some noise, but it’s greatly diminished when I change the input and output caps as well as inductors for the right values and known good components. Other than a couple of failures based on my own soldering skills, I’ve had no failures with the mini 360 once the inductor is changed, and the noise produced is also reduced with the correct capacitors. Before that, I had…. Too many failures.
On Jan 5, 2021, at 8:37 AM, Jim Aspinwall <Jim.No1pc@... <mailto:Jim.No1pc@...>> wrote:
I've got, had, 2-3 of those. After running a Pi and RA- interface for a month or two, one of them popped and smoked... tossed them.
The PowerWerx USB Buddy gadgets haven't failed yet.? Still experimenting with the ~$4 adjustable buck-converter units as part of building up some 3S Lithium battery backup packs.
Cort Buffington
785-865-7206
|
Kevin Custer
Danny K5CG
Alan KM4BA