Power multiple SBCs
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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
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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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
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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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
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 ' 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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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 ' 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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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 ' 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 so what should I buy ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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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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 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
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 -
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 -
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
Amazon.com: MEAN WELL LRS-350-24 DC Switching Power Supply, 24V 14.6A 350W for 3D Printer, LED Strip Light, Industrial Control System NES/SE/S: Computers & Accessories[^] Amazon.com: Buck Converter 12v to 5v, DROK 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging: Home Audio & Theater[^] Raspberry Pi 4 and Pi 3 Low Voltage Problems Solved 5.00 Volts Not Enough![^]
".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
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
Amazon.com: MEAN WELL LRS-350-24 DC Switching Power Supply, 24V 14.6A 350W for 3D Printer, LED Strip Light, Industrial Control System NES/SE/S: Computers & Accessories[^] Amazon.com: Buck Converter 12v to 5v, DROK 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging: Home Audio & Theater[^] Raspberry Pi 4 and Pi 3 Low Voltage Problems Solved 5.00 Volts Not Enough![^]
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
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
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
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
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
-----
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, 2013The 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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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
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
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
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
-----
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, 2013I love playing with these little boards I use these [NanoPi](https://www.friendlyarm.com/index.php?route=product/product&product\_id=268) 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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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
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
Do you have your Pi's in a cluster ?
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
No, but if I werent so old, I’d explore that.
".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
