Arduino as Gateway via USB crash on PI

[sineverba]

I'm investigating what's the problem here.

Pi1 with domoticz and Arduino UNO (original), both feeded via a HUB USB with power (so Arduino did not get power from PI directly).

Sometimes, in some hour, I did not get anymore update from both or single node (I have a powered relay + ds18b20 and a battery dht22).

Investigating and opening the serial I don't get nothing, but after a reboot of Arduino (with the button on the Arduino itself), I have the serial flooded from:

0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt=0,l=11,sg=0:Get Version
0;255;3;0;9;!TSF:MSG:LEN,0!=18
0;255;3;0;9;TSF:MSG:READ,0-0-0,s=0,c=3,t=2,pt

The serial is flodeed continuosly.

For some weeks, I did have the PI directly feeded via Samsung charger + Arduino with direct power from USB. I did want to change with a autopower HUB usb to no stress the PI. All is behind an UPS, to filter home current (not the max stability in my house, I need to say).

Do you have some idea?

Thank you

[Yveaux]

@sineverba !TSF:MSG:LEN,0!=18 typically indicates an error in the SPI transfer with the radio. How did you wire things up? Jumper wires can be the cause of flaky connections.

[sineverba]

The issue seems to be related to the USB hub powered. Seems that Arduino feeded directly from pi via USB goes well ....

[mfalkvidd]

@sineverba is gnd on arduino connected with gnd on raspberry pi?

[sineverba]

@mfalkvidd they are connected only with USB cable

[mfalkvidd]

@sineverba if you can, check with a multimeter that the usb hub grounds the different usb ports together. If it doesn't, that could be the cause.