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1)
Message boards :
Science :
Third Batch Kit V2.61 has problems with the usb communication
(Message 3196)
Posted 3311 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. |
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2)
Message boards :
Cafe :
KIT - Discussion [topic OPEN]
(Message 2788)
Posted 3624 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? |
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3)
Message boards :
Cafe :
KIT - Discussion [topic OPEN]
(Message 2773)
Posted 3631 days ago by HA-SOFT, s.r.o.
I have cleaned mini usb conector and all looks ok now. |
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4)
Message boards :
Cafe :
KIT - Discussion [topic OPEN]
(Message 2772)
Posted 3631 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. |
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5)
Message boards :
Cafe :
KIT - Discussion [topic OPEN]
(Message 2771)
Posted 3631 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. |
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6)
Message boards :
Cafe :
KIT - Discussion [topic OPEN]
(Message 2401)
Posted 3700 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 |