When you want to detect movement of your IOT project, you can use an ADXL345 accelerometer. With this in mind, let’s look at how we can use a ESP32 development board to read from an ADXL345 accelerometer.
When you have a DHT22 / AM2302 sensor, you will be able to get the temperature and humidity of your environment.
Given that, this post shows how to use ESP32 development board to read temperature and humidity from a DHT22 sensor.
When you want to implement a low cost IOT solution with bluetooth interface, you can consider using a ESP32 development board. In addition to the bluetooth interface, the ESP32 development board also includes a WiFi interface.
In order to run a program on the ESP32 Development Board, we will need to write our program into the flash memory of the development board. Since it is easy to write code and flash programs with Arduino IDE, it is a good tool to use with the ESP32 Development Board.
In case you need it, this post shows how to enable ESP32 development on Arduino IDE.
When you have work as a software developer, you will encounter many problems that you spend quite some time solving. For example, if you are looking to setup a Raspberry Pi web server to host your PHP application, you may take hours.
On the other hand, you may spend time in finding the parts needed to build a camera prototype that take pictures at the push of a button.
As I had said in why should programmers blog, blogging enables you to revisit your past solutions to solve current problems.
In addition, when you had written a good number of articles, the Internet will probably reward you with substantial viewership.
At this point in time, you may probably think of ways to earn some money to pay the running costs of your website.
So what are some easy and effective ways for programmers’ websites to earn money? In case you are a programmer who owns a website, here are some easy and effective ways to earn money.
When you are building a browser-based game, being able to track key presses is helpful.
For this purpose, you can register a JavaScript function that gets called when the browser detects a key is being pressed.
After the browser detects a key press, it will send information about the key to your function.
When your function is able to get the key that is pressed, it can then use this information to update the game state.
In this post, let’s look at how we can detect keyboard presses made to the browser screen with JavaScript.
When you are looking to operate remote-controlled or radio-controlled toy cars, robots and airplanes, you will need to use servo motors.
Since the ESP8266 NodeMCU LUA Development Board is cost efficient for IOT solutions, it can be used for controlling servo motors.
So how can we control a servo motor with the ESP8266 NodeMCU LUA Development Board?
This post discusses how we can control the SG90 servo motor, with the ESP8266 NodeMCU LUA Development Board.
Once upon a time, I was developing an IoT prototype on a Windows 10 IoT device that does not have any display port. Therefore, the only way to work with that device is to use Microsoft Remote Desktop. After using it for some time, I switched to another Raspberry Pi project of higher priority.
When I came back to this Windows based device, the password of the user account had expired. As a result of that, Windows Remote Desktop Connection Manager denied access to the device. Since that was the only user account for me to access the device, I had to start all over again with another device.
After this incident, I make it a point to configure my user account with a password that never expires.
In order to have a reference in the future, I created this post to document the steps to do so on Windows 10 IoT.
After you capture the Northern Lights with an entry level DSLR, you may want include them in your personal portfolio. Until you find the time to setup a content management system for your personal portfolio, you want to keep it as a static website.
At this point in time, you saw that Raspberry Pi Zero W and cover lying on the table. In addition to that, you have a spare micro USB charger that you used for charging your old Android phone.
Since you do not have any other use for these items, you decided to host your personal portfolio on that Raspberry Pi Zero W.
With this intention, this is how you can host a static website on your Raspberry Pi Zero W with Raspbian Stretch Lite and Nginx web server.
When I was trying to build a Python 3 Flask application on Cloud Foundry, I wanted to quickly check the environment variables that Cloud Foundry will supply to my application.
As a result of that, I created a Python 3 Flask application that will probe the environment variables that it receives from Cloud Foundry.
This post lists the files that constitute that Python 3 Flask application.
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