Custom Linux Image Build Using Yocto on WSL

When your Single Board Computer (SBC) is connected to specialized hardware, building an optimized Linux image with Yocto can be advantageous, as it produces a highly customized, reproducible, and lightweight system. To save time setting up the environment for building a custom Linux image, you can use a Yocto Docker container in combination with WSL.

• Installing WSL
• Setup Docker
• Using Poky Container
• Yocto build
• Beaglebone Black
• Raspberry Pi
• Adding a CustomLayer
• Using wxWidgets
• Creating an Image Recipe
• Making an SDK

Safe and easy DIY Home Energy Monitor Using Current Transformer with Arduino, Raspberry Pi, or Beaglebone Black

To measure and monitor the energy usage of home appliances, let us build a simple and basic energy monitor. Although there are several methods to build energy monitors, I have chosen YHDC Current Transformer SCT-013-000 [YHD18] for it. Because it is non-invasive, safe, and suitable for learning. It is a split-core current transformer so that it can be fastened and used easily without the requirement to touch the high voltage power lines. Note that only one power cable is to be put in the core as shown in Figure 1.

Figure 1. (Left) SCT-013 is split core so that it can be easily clipped on a wire. (Center) If all the wires are put inside the core, input and output currents are cancelled. Therefore the net current will be zero. (Right) It is required to put only one wire in the core.

Pixy

Pixy (http://cmucam.org/projects/cmucam5) is a vision system that can be used to add computer vision to your Arduino, Raspberry Pi, or BeagleBone project. Once you have taught it the color to detect, it can send you the position and size of the detected objects.