If you have a Raspberry Pi 2, 3 or 4, then you can install the official Ubuntu 19.10 server.
Since Ubuntu is a popular Linux distro for servers, you may want to install it on your Raspberry Pi server.
Given that, let’s look at how we can install Ubuntu 19.10 server on your Raspberry Pi.
As I had mentioned in how to host multiple websites from home, a typical network architecture looks like the following:
In such a case, we will need our router to hold a public IP address and perform port forwarding for our home servers.
However, there can be cases where we do not have the environment to put our server on the internet.
In such a situation, you will find ngrok useful. Since ngrok accepts traffic on a public address and relays that traffic through to the ngrok process running on your machine, you can put your server on the internet easily.
Given that, let’s look at how you can put your Raspberry Pi server on the internet with ngrok.
When you want to turn your unused Raspberry Pi into a security camera, you can take a look at motionEyeOS.
So what is motionEyeOS? In short, motionEyeOS is a Linux distribution that turns your single board computer into a video surveillance system. Therefore, it is convenient to setup a Raspberry Pi security camera with motionEyeOS.
Given these points, let us look at how we can setup a Raspberry Pi security camera with motionEyeOS.
After connecting my iPhone to my Samsung Smart TV via Chromecast, I accidentally powered off my TV with the remote.
Since the YouTube app was playing when I accidentally switched off my TV with the remote, something got screwed. When I switched on my TV again and launch the YouTube app again, a black screen showed up perpetually.
In order to have a reference in the future, I document the steps that I took to fix the issue.
Even though a Raspberry Pi security camera is not the cheapest surveillance camera, it can be worthwhile building one.
Especially for Raspberry Pi fans, you may have several unused Raspberry Pis because you buy one for each release. In such a case, a big part of your Raspberry Pi security camera is sunken cost.
Given that, let’s look at how we can setup a Raspberry Pi security camera with Raspbian Buster Lite and motionEye.
When I wrote about setting up MicroPython on an ESP development board, I came across the WebREPL.
If you setup MicroPython WebREPL on your ESP32 board, then you can interact with your ESP32 board wirelessly.
In case you need it, this is how to setup MicroPython WebREPL on your ESP32 development board.
When my friend Youssef shared a link to MicroPython, I kept it at the back of my mind. Since I had found some time to sharpen my saw, I decided to take a look at it.
If I get familiar MicroPython, then I can perform machine learning magic with an AIOT board like Sipeed Maixduino Kit with greater ease.
Given that in mind, here are the steps that I took to setup MicroPython on my ESP32 development board to kickstart my learning.
In case you wish to setup MicroPython on your ESP32 development board to run Python applications, read on to find out more.
So how do you communicate with a serial device that is connected to your Mac?
In this situation, you can use the screen command on your Mac to do so.
After you terminate the serial session with Ctrl+A+D, you may find that the serial device is still being hogged by the screen command.
When you try to access the device again, you may encounter a Resource busy error message.
For example, after I detached my screen terminal from /dev/cu.SLAB_USBtoUART, I will get the following message if I try to connect to the same device again:
Cannot open line ‘/dev/cu.SLAB_USBtoUART’ for R/W: Resource busy
Given these points, this post shows how we can terminate screen terminal sessions cleanly on macOS.
When sending data from your ESP32 development board, you may choose to send the data in JSON.
In such a situation, you can consider using ArduinoJson to help you construct the JSON data.
Given that, let us look at how we can post JSON data to a HTTP server endpoint from a ESP32 development board with ArduinoJson.
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