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  • Kubernetes in 5 minutes

    Explain Kubernetes in just five minutes? Impossible, thought Jamie Duncan. But he did it anyway.

  • GPIO Zero and Raspberry Pi programming starter projects
  • Uzair Shamim: Writing A Hangman Game (Python)
  • Programmer Makes Self-driving Toy Car Powered By Raspberry Pi, Arduino, Python

    On his blog, Zheng explains that the complete system consists of three parts: the input unit, processing unit and the RC car control unit.

    The input unit consists of a Raspberry Pi Model B+ attached with a camera and an HC-SR04 ultrasonic sensor. This unit collects the data (color video and sensor data) that is sent to a computer over local WiFi with the help two client programs running on Pi.

    The processing unit receives the video data from Raspberry Pi and it’s converted to gray scale and decoded into numpy arrays. Zheng further explains the other jobs performed in the processing unit — “OpenCV Python neural network training and prediction (steering), object detection (stop sign and traffic light), distance measurement (monocular vision), and sending instructions to Arduino through USB connection.”

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Canonical Outs New Ubuntu Kernel Update with Compiler-Based Retpoline Mitigation

New Linux kernel security updates have been released for Ubuntu 17.10 (Artful Aardvark), Ubuntu 16.04 LTS (Xenial Xerus), Ubuntu 14.04 LTS (Trusty Tahr), and Ubuntu 12.04 ESM (Extended Security Maintenance), adding the compiler-based retpoline kernel mitigation for the Spectre Variant 2 vulnerability on amd64 and i386 architectures. Canonical fixed the Spectre Variant 2 security vulnerability last month on January 22, but only for 64-bit Ubuntu installations. This update apparently mitigates the issue for 32-bit installations too. Spectre is a nasty hardware bug in microprocessors that use branch prediction and speculative execution and it could allow unauthorized memory reads via side-channel attacks. Read more

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