Tag: raspberry pi zero

• #Raspberry Pi: an E-Paper display with Widgets

  Raspberry Pi | 7 min | 31042

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  raspberry pi

  google apis

  raspberry pi zero

  e-ink display

  waveshare

  google calendar

  E-paper or e-ink displays are becoming more common in recent days. You can find them e.g. on readers, clocks and sensors. Thus, I looked for an e-ink display for the Raspberry Pi and I found the Waveshare® 7.5" E-ink Screen.

  There are many projects with an e-ink display and the Raspberry Pi, but I first tried with an ESP32 and MicroPython. That solution didn't work (something was not working with the reset voltage - too much signal noise). So, that remains a work in progress and I wi...

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• #Raspberry PI Zero W: Preempt-RT Kernel Performance

  Real Time Systems | 2 min | 9075

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  preempt-rt

  performance

  standard

  kernel

  patching

  raspberry pi zero

  Today I patched the kernel of a Raspberry Pi Zero W with Preempt-RT. I used the repo TiejunChina.

  Update 18.03.2018: The official Preempt-RT patched Rasbian repo is here.

  ##~/rpi-kernel$ git clone https://github.com/TiejunChina/linux.git # update 18.03.2018: old repository##
  
  ~/rpi-kernel$ git clone https://github.com/raspberrypi/linux.git # update 18.03.2018: new repository
  ~/rpi-kernel$ cd linux
  ~/rpi-kernel/linux$ git checkout rpi-4.14.y-rt  # today the kernel version is 4.14.22
                                                  # with rt17 resulting in 4.14.22-rt17+ 

  You can find a complet...

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