1 Reply Latest reply on Sep 27, 2019 5:16 AM by luigimorelli

    Element14 rasberry pi green light was not blinking

    vishwesh

      In element14 rasberry pi green light was not working

        • Re: Element14 rasberry pi green light was not blinking
          luigimorelli

          I don't know if this question has been addressed already... anyway, it can be useful for other readers as well.

           

          When the green LED of your PI does not flash, the system can't successfully access the microSD card. So you are probably in one of the following situations:

           

          1. You did not insert a preformatted and flashed microSD card
          2. Your microSD card is corrupted, and does not work anymore

           

          Solution:

          You should always keep a copy of the ISO image of your operating system. If you don't, please download one at http://downloads.raspberrypi.org/raspbian_latest

          Flash a new microSD card with the OS (if the old one is corrupted, you should avoid using it again). You can use balenaEtcher: it's free and has the same GUI for Linux, WIndows and MAC.

           

          microSD definition parameters

          The microSD has three primary parameters:

           

          • Memory capacity
            • MicroSD = up to 2 GB
            • MicroSDHC (High Capacity) = from 4 GB to 32 GB
            • MicroSDXC (eXtended Capacity) = from 64 GB to 2 TB

           

          • UHS Speed class
            • MicroSD Class 2 = 2MB/s
            • MicroSD Class 4 = 4MB/s
            • MicroSD Class 6 = 6MB/s
            • MicroSD Class 10 = 10MB/s
            • MicroSD UHS-I 1 = 10 MB/s – Bus Speed 50-104 MB/s
            • MicroSD UHS-I 3 = 30 MB/s  – Bus Speed 50-104 MB/s
            • MicroSD UHS-II 1 = 10 MB/s  – Bus Speed 156-312MB/s
            • MicroSD UHS-II 3 = 30 MB/s – Bus Speed 156-312MB/s

           

          • Video Speed Class - V6, V10, V30, V60, V90 again it's the sequential write speed