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Feather anyone cares or not, that's eggactly the kind of cropI didn't want to think about.
| Ravings en masse^ |
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| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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To get to the other side?
If you can keep your head while those about you are losing theirs, perhaps you don't understand the situation.
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Hi all, I have 4 single board computers each with its own power supply - I would like to have a single power supply power them all ( they have a USB C power input socket ) Despite googling I can't find anything - any of you gurus know a way ( I can't use POE as I can't get a cable to where they are ) I magine something like a powered USB hub with C outlets
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Hi Mike, they can be powered using some pins on the 40 pin GPIO socket via patch leads but I have them in cases so this is not an option - thanks for replying
Link to boards
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Have you considered a 3-port USB charger such as KOPPLA from I K E A (I won't post a link but google it). I appreciate you have 4 devices, but it would reduce the number of power supplies a little. Not sure if it would provide your power requirements, but it is rated at 2.4A per port. I have had one for several years and I use it regularly for phones & tablets.
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I think the power requirements are 5v 2.5 amp for these boards - I'm not that up on electronics so don't know if there's any leeway here
Edit
It's 5v 3 amp
Link
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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I have got only a couple USB-C devices. Both came with A-to-C charging cables, so they can be charged from any good old USB hub (or whatever kind of charging adapter you use). If you google for 'USB A-C cable', you'll find a large selection.
I wouldn't take for granted that all of these cables have a USB 3.1 A-plug, for higher effects. The cable I got at hand looks like having a traditional 4-pin A-plug, and if your SBCs require more than a couple of watts you must make sure to both choose cables and USB hub that can can handle it. I have never handled any hub capable of delivering more than 2.5 watt per port, but I guess they exist. (Most of my USB equipment is so old that USB 3.x wasn't firmly established when I bought it!)
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Hi there, the power requirement is 5v 3 amp - doesn't mention watts
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Power = Current (Amps) * Voltage
15W in your case.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Hi and thanks for that so for 4 devices I need at least a 60 watt charger / power supply with 15 watt outputs ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Yep, 'at least' being the operative words, factor in some derating (20%-30% maybe).
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Your math is correct - and that sort of hub may be slightly above bargain price 
Now, I think that 15 Watt sounds like a lot for a tiny SBC. That probably is a maximum if you put a whole pile of stash onto it. If you've got a plain Arduino, Raspberry Pi or something comparable, with little or no extras (such as LEDs, sensor, motors...) driven off the SBC, the power consumption is a fraction of 15 Watt. (Google '<your sbc=""> power consumption', and chances are that you will find some comforting results.
If you have a lot of equipment powered through your SBC, you should be more careful, though.
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Thanks for that, the only thing that might require a bit of extra power is, they are all fitted with a NVME M2 SSD drive
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Thanks so what should I buy ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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The 75 watt, 4 outlet charger I bought was a Chinc product (aren't they all, nowadays?), branded Satechi. I cannot say more about it than it works for me, but I have never been within the claimed 75 Watt output power. In particular, I do not know if it would work satisfactorly if you draw that maximum from a single one of the four ports. I wouldn't be surprised if the max power should rather be distributed over all four outlets!
So far, products from China ("which we call Red China") cannot unconditionally be trusted for through quality. In the 1960s and 1970s we were thinking of Japanese crap in similar terms. Behind that blurred curtain of mistrust, Japan built a truly high quality camera industry, an electronics industry and a car industry that knocked the feet away under hundreds of Western manufacturers.
Chinese manufacturers are no longer a joke. Some of the procucts they make are certainly up to standards.
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Hi I couldn't get a Satechi but got something similar - as for Chinese quality the boards are made in China anyway 
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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could you use a 24v psu, and hook 4 adjustable power bucks up to it, and power the SBCs from that?
I don't think a powered USB hub would provide enough power (1-2 amps at the most, and a raspberry pi (for instance) needs three amps for power.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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Hi John, not familiar with power bucks I'll check them out
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Getting a bit out of my depth here methinks - how would i connect 4 of them to a power supply and then out to my boards ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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run wires from the psu to the power bucks, and then run cables from the bucks to the Pis. Your other option is a UPS and plug all the pis's into it. That's much more expensive, but you get the highly valuable added protection of the UPS. I have an 1100ma UPS dedicated to a bank of six Pi's.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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The UPS sounds good John my boards aren't Pi's but they have very similar power requirements - running cables from the bucks would be tricky as all the boards are in cases. What do you use your Pi's for ? I've used one for years coupled with a £35 DAC hat from hifiberry to stream my digital files to my analog amplifier - it has no right to sound as good as it does. I also have a £1500+ DAC and while it's better quality - it certainly isn't £1465 different. Can you send a link for the UPS ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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A database server for my three home theater boxes (also Pi's), three DNS servers (using PiHole), and a controller for my 3D printer. One pi is simply a spare in case one of the other ones fail.
I have a crapload of Pi's (all are Pi4). They're smaller and more economical than a full-blown PC, and can be fully outfitted for less than $100 (each)
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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I love playing with these little boards I use these NanoPi and use them for hosting personal Docker NetCore API projects which utilise a postgres database , NGinx as a reverse proxy etc...
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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