Raspberry Pi and GPS problems

Raspberry Pi and gpsd problems

I have used same GPS dongle and same settings with my Raspberry Pi projects for years but now suddently I started to have problems with it.
It worked perfectly just after installing gpsd and things but after reboot I couldn’t get it work.

apt-get remove gpsd

and then

apt-get install gpsd

always seemed to get it to work until next reboot but that couldn’t be the real fix for this problem especially when this should work offline.

Then I found out that if I stop gpsd.socket and disable it then my gpsd worked just liked it should and I started to get NMEA data from my GPS dongle:

systemctl stop gpsd.socket
systemctl disable gpsd.socket

Not sure why or when this has changed so if anybody know feel free to comment and tell me.

Raspberry Pi and D-Link DWM-222

I’m not sure why every tutorial talk about usb-modeswitch because I haven’t use it and I can connect to internets with my D-Link DWM-222 without any problems.

I might have understood something wrong (if I have please comment and let me know) but this is how I do it.

Hardware:

  • D-Link DWM-222
  • Raspberry Pi 3 Model B+

Software: Continue reading Raspberry Pi and D-Link DWM-222

How to update BIOS almost without Windows

I have used this way to update many Dell computers (Laptops and desktops) but I’m sure that this will work with other brands too that can be run from the command line using dos

All you need to do this update is one USB dongle (it doesn’t need to be big probably 250MB could be enough but I haven’t found that old dongle). Rufus and the actual executable file which will update your bios which you have to download from your computer manufacturer website.

Only time when you need Windows is when you run Rufus and make that bootable USB dongle but after that you don’t need Windows. You might be able to do the bootable usb dongle in Linux or on Mac OS but I have been lazy and I haven’t tried it.

  • Download rufus https://rufus.akeo.ie/ and install it to your computer or use portable version like I use.
  • Make a bootable USB dongle with default settings using freedos which is the OS what we are going to use to boot our computer. If you want to use something else than Rufus to create your USB dongle you should find freedos files here: http://www.freedos.org/
  • Rufus default settings for updating computer BIOS without windows

    Rufus default settings for updating computer BIOS without windows

  • Copy biosupdate.exe to root directory of the dongle so that you will find then more easily when you have booted to freedos.
  • Boot from the dongle and run biosupdate.exe and run the update following the instruction which you get with your bios update.

Continue reading How to update BIOS almost without Windows

How to get Joy-IT 7″ Display work with Raspberry Pi

How to get Joy-IT 7″ Display work with raspberry pi

JoyIT 7″ Display:

Resolution 1024×600
Touch Controller GT811
Connectors HDMI for video and USB for power and touch functions

This shows you how to get JoyIt external 7″ HDMI display to work with Raspberry Pi. After these things image is OK and even touch screen thingy is working :-)

If you connect your joyit 7 inch display to your Raspberry Pi right away without any modifications it will probably look like this:

Raspberry Pi JoyIT Display Before

First I thought that my display is broken but then I tested it with my laptop and it worked so problem has to be somewhere else. I started to think about resolution settings of my Rasberry Pi and that indeed was the problem so here is how to fix it.

Model Joy-IT RB-LCD7-2 or JoyIT RB-LCD-7-2 or something like that

Continue reading How to get Joy-IT 7″ Display work with Raspberry Pi