Posts by HA-SOFT, s.r.o.

1) Message boards : Science : Third Batch Kit V2.61 has problems with the usb communication (Message 3196)
Posted 1695 days ago by HA-SOFT, s.r.o.
The problem is in usb implementation on detector side which is not good. Detector can not recover from this state itself. I think it's EMI on usb cable which make detector stop communicating.

Try to place wire choke on usb cable as close as possible to detector. It may help.
2) Message boards : Cafe : KIT - Discussion [topic OPEN] (Message 2788)
Posted 2008 days ago by HA-SOFT, s.r.o.
Hi all,

sometimes after restart of my raspberry, detector reports:

Radac $Rev: 585 $ starting...
Detached driver: usbhid
claimed interface, No error,0
sensors.xml: 7 nodes found
Found sensor v2.60
3640197,1042,2014-5-22 14:47:15,n,2.0 minutes,532.9 cpm,3.11 uSv/h
Radac $Rev: 585 $ starting...
Detached driver: usbhid
claimed interface, No error,0
sensors.xml: 7 nodes found
Found sensor v2.60
3989945,1162,2014-5-22 14:53:4,n,5.8 minutes,199.3 cpm,1.16 uSv/h
Radac $Rev: 585 $ starting...
Detached driver: usbhid
claimed interface, No error,0
sensors.xml: 7 nodes found
Found sensor v2.60


These values are wrong. Detector display shows correct values. It's the first value only, next values are ok.

Next I have big problem with usb comunication:

Warning: cannot query manufacturer for device: error sending control message: Broken pipe


Only restart of raspi helps. I have QCN sensor connected to the same raspi and it works ok a lot of moths.

Where should be the problem?

PS: @Tamara - stupid question: did you check polarity of geiger tube?
3) Message boards : Cafe : KIT - Discussion [topic OPEN] (Message 2773)
Posted 2015 days ago by HA-SOFT, s.r.o.

Radac $Rev: 585 $ starting...
sensors.xml: 7 nodes found
Found sensor v2.60
703563,272,2014-5-15 12:42:8,n,3.2 minutes,85.6 cpm,0.50 uSv/h
Error reading data: Device communication error
Error reading data: Device communication error


I have cleaned mini usb conector and all looks ok now.
4) Message boards : Cafe : KIT - Discussion [topic OPEN] (Message 2772)
Posted 2015 days ago by HA-SOFT, s.r.o.
Hi all,

finaly my sensor work, but I have problem with usb communication. Strderr:

Radac $Rev: 585 $ starting...
sensors.xml: 7 nodes found
Found sensor v2.60
703563,272,2014-5-15 12:42:8,n,3.2 minutes,85.6 cpm,0.50 uSv/h
Error reading data: Device communication error
Error reading data: Device communication error

WIN7 64bit OS show correct HID device.

I have checked all 3 resistors and 2 zener diodes, but there is no problem.

Where should be the problem?

Thanks
Z

PS: Also, in USB3 host OS detect unknown device.
5) Message boards : Cafe : KIT - Discussion [topic OPEN] (Message 2771)
Posted 2015 days ago by HA-SOFT, s.r.o.
Please!! Check your PCB before soldering.

My PCB has errors. It was etched wrong.

Good luck to all.
6) Message boards : Cafe : KIT - Discussion [topic OPEN] (Message 2401)
Posted 2085 days ago by HA-SOFT, s.r.o.
Thanks for schema. It clears a lot things.

Can I use 8 bit expander with one i2c address (display will use lower 4 bit for adresing) or is neccessary to use 16 bit expander with two banks?

And which is the i2c adress like?

Thanks
Zdenek


Main page · Your account · Message boards


Copyright © 2019 BOINC@Poland | Open Science for the future