Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Yash Sanghvi
Page 6 of 20
ArduinoJSON: Serialize and Deserialize
The ArduinoJSON library, as the name suggests, helps you work with JSON objects on Arduino. In order to install it, go to the Library Manager, and search for ArduinoJSON. Install the library by Benoit Blanchon.This is one of the very heavily documented libraries. In fact, it has its own website: https://arduinojson.org/. You can find answers to several questions on this website.In this article, we will look at Serialization (generating a JSON document), and deserialization (parsing a JSON document) using this library.SerializationLet's start with Serialization. It is pretty straightforward. And if you've worked with python, the code will look all the ...
Read MoreArduino – base64 encode and decode
Arduino contains a library that helps with base64 encode and decode. You can download it from the Library Manager. Search for base64, and install the library by Densaugeo.Now, open a new sketch and run the following sample code −#include "base64.hpp" unsigned char normal_text[20] = "Hello World"; unsigned char base64_text[20]; unsigned char decoded_text[20]; void setup() { // put your setup code here, to run once: Serial.begin(9600); Serial.println(); int base64_length = encode_base64(normal_text, 12, base64_text); Serial.print("Base64 Text: ");Serial.println((char *) base64_text); Serial.print("Base64 Length: ");Serial.println(base64_length); int decoded_length = decode_base64(base64_text, decoded_text); Serial.print("Decoded Text: ");Serial.println((char ...
Read MoreHow to clear the EEPROM with Arduino?
Arduino Uno has 1 kB of EEPROM storage. EEPROM is a type of non-volatile memory, i.e., its contents are preserved even after power-down. Therefore, it can be used to store data that you want to be unchanged across power cycles. Configurations or settings are examples of such data.In this article, we will see how to clear the EEPROM, i.e., set all its bytes to 0. We will be walking through an inbuilt example in Arduino. The EEPROM examples can be accessed from − File → Examples → EEPROM.ExampleWe will look at the eeprom_clear example. It is very easy. You essentially ...
Read MoreHow to write data into EEPROM with Arduino?
Arduino Uno has 1 kB of EEPROM storage. EEPROM is a type of non-volatile memory, i.e., its contents are preserved even after power-down. Therefore, it can be used to store data that you want to be unchanged across power cycles. Configurations or settings are examples of such data.ExampleWe will see how to write data to the EEPROM in this example. We will be walking through an inbuilt example in Arduino. The EEPROM examples can be accessed from − File → Examples → EEPROM.We will look at the eeprom_write example. It is quite straightforward, thanks to the EEPROM library. A word ...
Read MoreHow to read data from EEPROM in Arduino?
Arduino Uno has 1 kB of EEPROM storage. EEPROM is a type of non-volatile memory, i.e., its contents are preserved even after power-down. Therefore, it can be used to store data that you want to be unchanged across power cycles. Configurations or settings are examples of such data.ExampleWe will see how to read data from EEPROM in this example. We will be walking through an inbuilt example in Arduino. The EEPROM examples can be accessed from − File → Examples → EEPROM.We will look at the eeprom_read example. It is quite straightforward, thanks to the EEPROM library.We begin with the ...
Read MoreWhat is Arduino Ticker Library?
The ticker library in Arduino helps you to perform fixed interval operations. It is a great alternative to using delay() as the interval, since this will provide non-blocking usage. This library doesn't use any hardware timer interrupts. Rather, it works with micros() and millis() to organize your tasks. All you need to provide this library is the name of the function to be called, at what interval, and how many times this should be repeated. The library does the rest.ExampleIn order to install this library, open the Library Manager, and search for 'Ticker'. Install the library by Stefan Staub.Once the ...
Read MoreArduino IDE 2.0 – Using the Boards Manager
In Arduino IDE 2.0, the boards manager is present in the navigation panel on the left.It can also be accessed using Tools → Board → Boards Manager.If you open the boards manager, you can see that it allows you to download packages or cores, each containing one or more boards. For instance, instead of downloading only Uno, you download the 'Arduino AVR Boards' package, and this includes several other boards (like Mega, Leonardo, etc.) apart from Uno.Search for your board of interest, and click 'Install'The progress can be seen in the 'Output' tab at the bottom.
Read MoreInstalling a new library in Arduino IDE 2.0
The process of installing a new library in Arduino 2.0 is quite similar to the older versions of the IDE. While the library manager can be accessed using Tools → Manage Libraries, it is also available in the navigation panel on the left.The process ahead is quite straightforward. Search for the library of your interest, by typing in the search box, locate that library, and click Install!The IDE 2.0 prompts you if the selected library has any dependencies which aren't present, and asks you if you want to install these as well.You can choose the appropriate option, and see the ...
Read MoreHow to use the Autocomplete feature in Arduino IDE 2.0?
The autocomplete feature is a welcome addition in Arduino IDE 2.0. This addresses a major drawback of Arduino IDE when compared to other IDEs, like Eclipse of VS Code.In order to use the auto-complete feature, you first need to select your board (this feature doesn't work till the board is selected). Once that is done, the suggestions should start popping up as soon as your start typing characters, as per the documentation.However, in some cases, like on my machine, this doesn't always happen. In such cases, you can click Ctrl + Space for the suggestions to appear. Perhaps that is ...
Read MoreHow to Use a Serial Monitor with Arduino IDE 2.0?
In Arduino IDE 2.0, the Serial Monitor does not open in a popup window. Rather, it opens in a new tab at the bottom, besides the Output tab.The Serial Monitor can be accessed by Tools → Serial Monitor, or using the keyboard shortcut (Ctrl + Shift + M)The following figure highlights the various parts of the Serial Monitor.Note that because the IDE 2.0 is in the beta mode right now, the Serial Port may not be detected immediately. In some cases, you may need to restart the IDE for it to be detected.Similarly, the Upload button may not work sometimes. ...
Read More