Author: ezradharris

  • Motion Eye OS – Raspberry Pi Project

    Recently for Christmas, I had received three Raspberry Pi zero’s. Since then, I had not done anything with them. Until yesterday, when I found out about a camera OS for Raspberry Pi, called ‘Motion Eye OS,’ I looked up some tutorials and got started installing it. First, I prepared an SD Card, formatted it, and installed the downloaded OS from GitHub (Link Here), using Balena Etcher. Then I plugged the SD card into my Raspberry Pi Zero. At first, it didn’t show anything on the screen, so I unplugged it. I did some research and found that sometimes you need to reinstall the OS on the sd card for it to work, so I did that and started the raspberry pi again; finally, it showed something, but unfortunately, it only showed what’s known as a “rainbow screen” (picture below), and so I did some more researching and found that I had accidentally skipped a step in the on the setup page, which was configuring the “wpa_supplicant” file, the wpa_supplicant file is a file for telling what wifi network to connect to, so I edited the file using Notepad++, (Note: don’t edit the file using Ubuntu, I had to use a windows computer for editing the file). After that, I ejected the sd card from the computer and plugged it into the Raspberry Pi again. Finally, it booted to the correct screen, and after a bit of waiting, it loaded Motion Eye OS correctly. Then on a different device, I opened my router control panel (to find your control panel, type in 192.168.1.1. If that does not work, read this). And located the device on my “connected devices’ panel. Typically, it will be called something like this: “meye-6e7ea0fd”, then I copied and pasted the given IP address of the raspberry pi into my web browser. And it opened the control panel for the Raspberry Pi, and now I can view my camera from anywhere around the house! I plan on 3D printing a camera mount in the future.

  • Setting up Ethernet

    I have heard from most computer professionals that ethernet is much better than using wifi for home computers because of the speed compared to wifi speeds. Today, I installed an Ethernet switch underneath my desk. First, I ordered an Ethernet switch from amazon (Amazon Link), and then I also ordered a 15 foot long cat7 Ethernet cable (Amazon Link). Once they arrived, a few days later, I plugged an ethernet cable into the nearby ethernet outlet, then sent an internet signal to another port that I plugged into the port that I labeled “North Room” (which was my bedroom). Then I plugged my Ethernet cable I just ordered into there and then plugged the other end into the switch, which I mounted right below my desk. So far, it seems to work better than Wi-Fi. I wanted available Ethernet ports because I have several Raspberry Pi’s that I use for different projects that need to be connected directly using ethernet instead of wifi is because I had issues with my Raspberry Pi. Either the wifi chip inside the Raspberry Pi isn’t strong enough, or it doesn’t have wifi compatibility built-in. 

  • Sketch of Computer Storage Sizes

    Imagine one dollar representing one byte of computer information. Use this example as a visual for the relative computer storage sizes:

  • Raspberry Pi 400 Retro Keyboard

    Raspberry pi recently announced its latest model of the Raspberry Pi. It’s called the Raspberry Pi 400

    It’s not clear that it is available for purchase yet. I heard about it first from a podcast called SQPN that discusses technology. 

    It is basically a Raspberry Pi put into a keyboard, so the Raspberry Pi 400 is the same as the Raspberry Pi 4 but with upgraded parts. It runs the latest version of Raspberry pi OS. The $100 kit includes the following:

    • Micro HDMI to HDMI cable (for monitor display)
    • Power cord 
    • Micro SD card (for the OS and storage)
    • Mouse
    • Raspberry Pi project book

    It’s also really cool because the ports on the keyboard are located in the back:

    I will write a follow-up blog post when it arrives! 

    Here’s an example of a real retro keyboard with a built-in computer from the 1980s. It was called the Commodore 64. The Commodore had 64 Kb compared to the Raspberry Pi 400 that has 4GB of RAM. My Dad was in high school when the Commodore came out, and he remembers one classmate who had one, but no one else had one in his class. These movies came out the same year as the Commodore:

    • E.T.
    • Annie 
    • Star Trek Wrath of Khan 
    Here are some old ads for the Commodore: