Problems powering Penta SATA HAT and Raspberry Pi 5

[mark10432]

I have had the Penta SATA HAT for around a week now and have been using it with a Raspberry Pi 5. Ever since I first turned it on I have had problems with a message showing after each boot in Pi OS that says “Reset due to low power event. Please check your power supply”.
Before buying the hat I read the instructions carefully and purchase a 12V 10 Amp barrel connector power supply. I believe this should be plenty to power the Pi5 and 4x 2.5" HDDs I plan to use. However I even get the message when powering just the Pi 5 and the hat without drives and booting from an SD card.
As a test I also tried powering the Penta SATA HAT and Pi 5 via the Molex connector plugged into a 850W PC power supply and still receive the message. If I power the Pi 5 and hat via the official Raspberry Pi 5 USC-C power supply then I don’t get the message. However I think this wouldn’t give me enough power for my drives.
Has anyone else had this issue and what did you do to resolve it?

[Howy]

Mark, even with overpowering, have you found a solution?

Here is my setup described, at the end with to low power delivered to the USB ports.

Undervolted pi5 penta hat

Some more input: I have additionally installed the radxa sata top hat fan unit, with 4 Samsung 870 EVO satas. Additionally I use an USB2Ethernet adapter to make use of 2,5Gbit/s from WisDpi. 2 Power units with 12V/5A were used for test, a cheap one like the one from the post of asynch8 and an expensive one designed in Germany (huge weight difference and I expect more reliable power without the house burning down) as well as the Raspi power supply 5,1/5A connected, together and standalone (I gue…

[mark10432]

Hi Howy,
No I still haven’t found a solution to this. The “check your power supply” warning is still there however I actually haven’t seen any other problems. It’s just a little annoying that the message keeps being shown when I sign in to my Pi5. When trouble shooting I even purchased a second Penta SATA Hat to see if it had the same result and it did. I’m thinking it’s maybe just something that happens when the Pi5 is powered by GPIO pins.

[Bxtreme]

Hey, I’m having the same issues with my setup. I’m running a Raspberry Pi 5 on the latest Ubuntu Server LTS.

When I power the server up for the first time, I see the “Reset due to low power event. Please check your power supply” message.

After rebooting via command line, I get the “This power supply is not capable of supplying 5A; power to peripherals will be restricted” message.

I just set up this server today with two drives installed. Everything seems to be going just fine at the moment, but I’m going to leave it on for a while and run some IO tests every now and then just to be sure it is stable (before I start relying on it as a NAS).

I’m happy to see your follow-up message though - it seems this is more of an annoyance than an actual problem.

Please keep us posted if you run into any problems and I’ll do the same!

PS - Really wish someone from Radxa would chime in on this issue or at least put a warning in their documentation so anyone new to the hardware wouldn’t freak out

[dominik]

is it yet again same problem?

Undervolted pi5 penta hat

Dominik, thank you! Now I understood the content of what you were saying. Also described here in depth: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#typical-power-requirements https://forums.raspberrypi.com/viewtopic.php?t=361206 The Pi5 is delivering only 0,6A, as long as none original Power Supply 27W is connected. Obviously I have used a stronger supply with 60W for my setup with Penta Sata hat, 4 SATA SSD’s, fan unit top, fan for the Pi5 and USB-Ethernet 2,5Gbi…

[Bxtreme]

Thanks Dominik!

It seems the best solution is to add the usb_max_current_enable=1 line. I don’t see myself actually using the USB’s ports very much. I may plug in a flashdrive or an externally powered HDD at some point to make a backup of data.

My question is, if the HAT can’t pass 5A, and the config file is telling the pi it can run at full current, would I have issues if I did plug something more demanding into the USB ports?