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Missing nanopi m3


viking
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1 hour ago, viking said:

i just got my nanopi m3 today...

where did you buy, because: http://www.friendlyarm.com/Forum/viewtopic.php?f=42&p=3028#p3028
 

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by Sidi » 11 Oct 2017, 15:17

Hi, 
I received confirmation from FriendlyArm by email that both M2a and M3 has been discontinued.
Apparently they can continue producing with a relatively hight MOQ.

Sadly no reponses from them about the lifespan of their products.

 

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it would be nice if they posed expected date of product line termination... but still does not change the fact that I can't get anything to run on it... stuff that igor posted does not work... it just dies... with what ever i posted before...

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2 minutes ago, viking said:

stuff that igor posted does not work


It's tested. It works and I will test it again just to make sure. What is your PSU, how do you power the board? If you power via micro USB I will not waste my time.

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hey... i can boot this img: s5p6818-debian-sd4g-20170619.img ... it runs but res is 1280x720 and to change it one needs to play with C code... it seems to be stable... but this is the only thing that boots...

tnx... i have usp power with 2.8 amps...

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:) i assumed as much... :) hmmmm let's see how it goes when i get psu tomorrow... or i get few 7505 and hook them to run the board... i think i have the parts inhouse... i will look around and post pics... even if i fry it... as a warning... :)

 

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What do you mean by 7505 ? Do you mean 7805 Voltage Regulator ? Be aware that those are 1A only ...

You don't any 5VDC Wall plugged PSU with a barrel connector ?

 

EDIT : When I'm running of 5V PSU, I take some 12V and use those DC-DC converters : http://www.ebay.ca/itm/5pcs-Mini-360-DC-DC-Buck-Converter-Step-Down-Module-4-75V-23V-to-1V-17V-EV-/272877133247

 

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so :) looking thank you `martinayotte` for 7805 i found this gizmo... dc-dc... i am making desktop sd now... let's how it works in a few...

IMG_20171020_225344.jpg

Edited by viking
i have 12v 1.5a charger... it should pull 3a at 5v...
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Running out of ideas since I can't replicate this problem. It still could be a failed / badly written (bad) SD card. This cheap buck converter is also not good enough to rule out underpowering. Have you tried booting without having anything attached to USB?


Add: I did few tests limiting the current and I could not boot the board when input current was below ~1.5A without having anything except HDMI. Perhaps there (HDMI) is a problem? Further. Stressing the board pulls ~1.6A and it was pretty easy to crash the board when PSU was limited to 1.8A ... which is close to Chinese "3A" :) 

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6 hours ago, Igor said:

This cheap buck converter is also not good enough to rule out underpowering

Hmm, I have all 10 of my sbcs running off similar Chinese dc-dc converters. The higher powered boards have a V meter permanently attached to monitor the supply and are rock solid. They are more stable if you keep the input supply within a reasonable factor of the output voltage - I provide 12V on the high side (from another buck converter) rather than feeding the raw 18-20V from the laptop PSUs that I use.

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