Hi, I would use my Unicorn Phat on a RPI3; I wrote some python script and I use the PHAT as a monitor to check the status of my servers. It works fine for some minutes. but after som reboot of my PI3, I receive a lot of messages about corruption of SD (… EXT4-fs error (device mcblk0p2): ext4 get ino…

What power supply are you using with your Pi 3?

Hi, I’m using a power adapter send to me with the RPI3: STONTRONICS Switching adapter MODEL: DSA-13PFC-05 FCA INPUT: 100-240V OUTPUT: 5.1V 2.5A Guido Vizioli

That should be fine, what about the SD card? The type of corruption you mention can happen for many reasons, but an unstable power supply or weird SD card are the most common cause.

Hi, I’m using Sandisk 16Mb sd card and before installation of Pimoroni library and script update, all worked fine…. I’m working about this project starting from 4 months and never, until now, I have had problems about cards corrupted… Guido Vizioli

Hi, I executed a new test running rainbow.py at max brightness; after 15 minutes the SD was corrupted… What do you suggest? (the power adapter is origonal with the raspberry logo)

Do you have suggest about what to check to avoid this?

Tried to check in with the other engineers to see if they’re got any ideas, but it’s been a busy week. It’s definitely unusual. We’ve had display Pi’s running Unicorn HAT for days at a time without these symptoms. Do you have any other SD cards to try? It’s possible it could be a marginal card that…

Hi, I tried with other SD, but the results is the same, but I think that the problem could be with what is running together with PHAT: I wrote an application in PYTHON that interface my domestic domestic (Bticino; It uses the following libraries: MYSQLDB, UPSAPCD, TELEPOT, PSUTIL, LOGGING, REDIS, S…

It’s possible that you’re running at the very, very high end of power consumption and that’s affecting writes to the SD card. Have you tried reducing the brightness of Unicorn HAT- you can quite drastically reduce power consumption with little visible change in brightness. It might be worth removin…

Hi, without the PHAT board, everything works fine, included 6 LED + 1 buzzer addressed using GPIO (I’m using this configuration for 1 month without problems); I need more visual check, so I would use a PHAT…. For all tests with PHAT I’m not using other LEDS and BUZZER…s Guido Vizioli

Unicorn PHAT & SD corruption

Support

gadgetoid September 10, 2017, 9:27pm 13

Sorry. It looks like I might have been barking up the wrong tree with the power consumption theory. See: [SOLVED] Problems with Unicorn pHAT Software

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Unusual behaviour when using Unicorn HAT Support	9	1239	December 28, 2017
[SOLVED] Problems with Unicorn pHAT Software Support	8	2101	September 15, 2017
SD card corruption: power limits? Picade	0	664	February 11, 2017
Unicorn pHat does not work anymore after sudo update && upgrade Support	7	1411	November 29, 2016
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Unicorn PHAT & SD corruption

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