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Nandan Dubey
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usb 1.0 vs usb 2.0 lines? Check lines in usb camera .. may be it is there in usb camera also because of big screen pixelation? no device connected root@FriendlyARM:/usr/local/bin/eyeris_usb# lsusb Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root…

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Getting information about processes In linux you can get all the process in this directory /proc /proc/proc_id has many files and folder about processa info There are multiple ways like: pwdx $ pwdx lsof $ lsof -p | grep cwd /proc $ readlink -e /proc//cwd…

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Does your pin support INPUT_PULLUP? Generally there are two modes: INPUT and OUTPUT but sometime a pin also support INPUT_PULLUP this is useful for switch where you do not need extra big ohm resistor for pulling up or down the pin to ground or vcc when…

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cat /proc/asound/cards root@FriendlyARM:~# cat /proc/asound/cards 0 [audiocodec ]: audiocodec – audiocodec audiocodec 1 [sndhdmi ]: sndhdmi – sndhdmi sndhdmi root@FriendlyARM:~# arecord -l ** List of CAPTURE Hardware Devices ** card 0: audiocodec…

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ifconfig eth0 down ifconfig eth0 up dhclient eth0 or dhclient wlan0

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credit: wiringNP +—–+—–+———-+——+—+NanoPI M1+—+——+———+—–+—–+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +—–+—–+———-+——+—+—-++—-+—+——+———-+—–+—–+ | | | 3.3v | | | 1 || 2 | | | 5v | | | | 12 | 8 | SDA.0 | IN | 0 […]

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Many a time for setting your application on fresh ubuntu machine you will be frustrated with the qt unfulfilled dependencies. Once I got this with qtwebkit and I installed all possible plugins like:  apt-get install libqt5multimedia5 libqt5webkit5-dev…

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You can’t run applications on same display so :0 :1 is needed for each application You use same terminal but different display application will run but display will be screwed whatever is changing the display that will be shown Only part of the screen…

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xwininfo command will give you information about a window   xwindow get list of all windows xwininfo -tree -root -display “:0”   all xwindows list
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