开云体育

Anyone have favorable experiences with any of the 12 to 5 volt @5 amp converters that are out there.

There are a bunch of them on Amazon but the reviews are all over the place and indicate issues depending on the end use.

I'm building a Pi5 for of grid use.

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Thanks,

Greg

NZ6E

The Pi4 calls for 3A, the Pi5 calls for 5A. You can use a 3A power supply with a Pi5 but you are limited to 600ma on attached USB devices and may also have performance issues.

Exactly! I'll have everything running on 12 volts when remote and I am using a Pi 5.

Would like to stay away from running an inverter to save the battery. 12 volts to 110 volts? just to run a 5 volt 5 amp wall wort isn't very efficient.

I use the Powerwerx converters. They use Anderson powerpoles.

Powerwerx offers a couple options to convert 12v to 5v USB or USB PD (multi-volt options).

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3 amps -

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75W PD -

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90W PD -

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The RPI only needs that much current (5 amps) if you are fully-loading all the USB ports, you may not need so much current...

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Ken, N2VIP

This page has info on various RPi usage, and indicates bare RPi draws only 600 mA, which seems right based on my tests with RPi 5, NVMe board and active cooler, which was well under 1 amp - BUT I had no USB devices plugged in.

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Ken, N2VIP

I have been using one of these in 3 different go boxes I’ve built. For the last 3-4 years they have given me no problems, and I like them because the voltage ?and amperage is adjustable. Keep in mind when you are planning your build to account for ALL the power draws — not just Pi, but fans, USB devices, lights, displays, etc.

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On Amazon, search for:

DROK DC Buck Converter, 5.3V-32V to 1.2V-32V 12A Adjustable Power Supply, 5v 9v 12v 24V 30V 32V Step Down Voltage Regulator

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Steve Johnson
K0OIL

I'm using this one on my 3D printer for a Pi zero 2W with no problems, but that load will not stress it like a Pi5 would.

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73 Steve, KM5HT

NOTE that the Raspberry Pi 5 normally requires USB-C Power Delivery protocol (PD) to operate.?
The PD spec only requires 3A at 5 volts, but the RPi5 bends the rules and requests 5A at 5.2V from the PD source.?
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There are only a few 12V to 5V converter modules with USB-C connectors that support PD.?
Although only rated 36 watts, I have used these to run an RPI5:?
? $6 ??
?$14 ? (has display showing mode and V)?
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There are many converter modules, some with USB-C plugs, that do not support PD.?
? $9 ??
?$12 for 2 ??
I have used these, which will work fine, if you first set a parameter in the RPi5 hardware configuration to ignore PD, and assume 5A is available:?
? On the terminal command line, enter:?
? sudo rpi-eeprom-config –edit? ? ?Add the line:?
? PSU_MAX_CURRENT=5000?
And add the following to the end of file /boot/firmware/config.txt:?
? usb_max_current_enable=1?
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The RPi5 will deliver an "Under-voltage" warning when operating below 4.63 volts.?
To see what the RPi5 measures on the 5V input, enter on the terminal:?
?vcgencmd pmic_read_adc | grep EXT5V_V?
You will be surprised at the voltage drop in most USB supply cables!?
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Most USB cables are poorly made with flimsy wires.?
Buy a power cable with thick wires, rated for Quick Charge or PD.?
? $8 for 2 C to C ??
? $9 for 5 A to C ??
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