In this tutorial we are going to learn how to draw circles on a SSD1306 OLED display, using the ESP32 and the Arduino core.
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In this tutorial we are going to learn how to use the SHA-256 algorithm to compute the digest of a message, using Python 3.7.2 and the PyCryptodome module.
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In this tutorial we will learn how to flatten a nested JSON object using the flat library.
Continue reading “JavaScript: flattening a JSON”Python pyzbar: Detecting and decoding barcode
In this tutorial we will check how to detect and decode a barcode in an image. For this we will be using the pyzbar library.
Continue reading “Python pyzbar: Detecting and decoding barcode”Python OpenCV: Detecting and Decoding a QRCode
In this tutorial we will learn how to detect and decode a QR Code on an image, using Python and OpenCV.
Continue reading “Python OpenCV: Detecting and Decoding a QRCode”Python OpenCV: Drawing lines on image
In this tutorial we are going to learn how to draw lines in an image, using Python and OpenCV.
Continue reading “Python OpenCV: Drawing lines on image”ESP32 XML: Obtaining the value of an attribute
In this tutorial we will learn how to parse a XML document and obtain the value of an attribute in one of the elements. The tests from this tutorial were done using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Continue reading “ESP32 XML: Obtaining the value of an attribute”Python OpenCV: Getting region of interest
In this tutorial we will learn how to get and display a region of interest from an image, using Python and OpenCV.
Continue reading “Python OpenCV: Getting region of interest”Python OpenCV: Getting image dimensions
In this tutorial we will learn how to obtain the dimensions (height and width) of an image read with OpenCV, using Python.
Continue reading “Python OpenCV: Getting image dimensions”ESP32 XML: navigating through a list of elements
In this tutorial we will learn how to parse a XML document and navigate through a list of elements, printing their values. We will be testing this tutorial on the ESP32, using the Arduino core and the TinyXML-2 library. The tests from this tutorial were done using a DFRobot’s ESP32 module integrated in a ESP32 development board.
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