asic gridseed not so cool ?

[raph593]

hello

i have buy six gridseed 1 month ago for testing (360kh/s for altcoin with 7watt   )

2 of my gridseed no longer work
and 4 others works just 5 minutes and stop mining  

http://image.noelshack.com/fichiers/2014/25/1403290016-1.png

i have 1 rapsberry pi (b model)
this hub usb http://www.amazon.fr/gp/product/B0063KI9FO/
and gridseed from zoomhash

how can i fix it plz  



(sorry if my english is bad)

[byt411]

hello

i have buy six gridseed 1 month ago for testing (360kh/s for altcoin with 7watt   )

2 of my gridseed no longer work
and 4 others works just 5 minutes and stop mining  



i have 1 rapsberry pi (b model)
this hub usb http://www.amazon.fr/gp/product/B0063KI9FO/
and gridseed from zoomhash

how can i fix it plz  



(sorry if my english is bad)

Devices -> Enable?

[raph593]

how ?

why turn off after 5 minutes of mining ?

[ravin]

I had similar problems. I did these 2:

• Are you using a reasonable USB hub?
• Pi heating up: Keep the pi close to the gridseeds so a bit of air falls over the ARM chip of Pi (of course if you haven't disconnected the fans)

After fixing these 2 my gridseeds never failed :-)

[ravin]

A reasonable USB hub means a good quality powered hub.

Also, what powersupply are you using?

[raph593]

http://www.amazon.fr/gp/product/B0063KI9FO/ my hub usb (5 V / 3,5 A)
http://www.amazon.fr/gp/product/B00EZLBJ32/ my power for raspberry pi (DC 5V 1500mA (1.5A))

[ravin]

Raspi powersupply looks good. No idea about the other one.

I had used this first (crappy)
http://www.amazon.fr/MULTIPRISE-USB-HUB-Sorties-Alimentation/dp/B0017KJ4I6/ref=pd_sim_sbs_computers_18?ie=UTF8&refRID=0K9ZXF4B0SWZ99AECXW2

and switched to (much cheaper)
http://www.ebay.in/itm/7-in-1-USB-2-0-Hi-Speed-Hub-Individual-On-Off-buttons-7-Ports-/190752379219?pt=IN_Computer_Components&hash=item2c69ba5153&_uhb=1