Posts tagged Code
Geographic Visualizations in Python with Cartopy
Geographic Visualizations in Python with Cartopy

Cartopy is a cartographic Python library that was developed for applications in geographic data manipulation and visualization. It is the successor to the the Basemap Toolkit, which was the previous Python library used for geographic visualizations. Cartopy can be used to plot satellite data atop realistic maps, visualize city and country boundaries, track and predict movement based on geographic targeting, and a range of other applications relating to geographic-encoded data systems. In this tutorial, Anaconda 3 will be used to install Cartopy and related geographic libraries. As an introduction to the library and geographic visualizations, some simple tests will be conducted to ensure that the Cartopy library was successfully installed and is working properly. In subsequent tutorials: shapefiles will be used as boundaries, realistic city streets will be mapped, and satellite data will be analyzed.

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GIS, Python, ProgrammingJoshua HriskoCartopy, Python, Python Cartopy, Cartographic Python, Cartography, Python Basemap, Python Latitude, Python Image, Python Longitude, Longitude, Latitude, Python OSM, OSM, OpenStreetMap, Open-Source, Street Map, Anaconda, Tutorial, Visualization, Data Visualization, Python Visualization, Python Coordinates, Numpy, matplotlib, Python matplotlib, Map, Mapping, Mapping Python, ASOS, NYC, New York City, Programming, Python Programming, Code, Python CodeComment
BLE Nano Arduino Board - Bluetooth Control with an iPhone (BLExAR App)
BLE Nano Arduino Board - Bluetooth Control with an iPhone (BLExAR App)

The BLE Nano is introduced as a hybrid between an Arduino Nano and a CC2540 Bluetooth Low Energy (BLE) module. The Arduino Nano has an ATmega328P as its main microprocessor, which communicates over the serial port to send and receive Bluetooth packets from the CC2540 BLE chip. This creates a Bluetooth-enabled Arduino device - encased in a Nano-sized circuit board! Using the BLExAR iOS app, the BLE-Nano will be controlled using an iPhone. BLExAR allows users to control the pins on the Nano, which will be demonstrated by switching an RGB LED on and off.

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Arduino, Bluetooth, ElectronicsJoshua HriskoBLExAR, Arduino BLExAR, Arduino, Arduino iOS, Arduino iOS Bluetooth, Arduino Bluetooth, Arduino IoT, Arduino App, App, BLE Nano, BLE, Bluetooth, Bluetooth Low Energy, iOS Bluetooth, HM-10 Bluetooth, HM-10 Bluetooth Module, AT-09 Bluetooth, iPhone X Bluetooth, Nano, Arduino Nano, Arduino Board, Arduino Boards Manager, Arduino Upload, RGB, RGB LED, Arduino RGB LED, Arduino RGB, Breadboard, Wiring, Arduino Wiring, Code, Programming, Arduino Programming, microcontroller, Pinout Comments
Arduino + VL53L1X Time of Flight Distance Measurement
Arduino + VL53L1X Time of Flight Distance Measurement

Time of flight (ToF) is an approximation of the time it takes a traveling wave to come in contact with a surface and reflect back to the source. Time of flight has applications in automotive obstacle detection, resolving geographic surface composition, and computer vision and human gesture recognition. In the application here, the VL53L1X ToF sensor will be used to track the displacement of a ping pong ball falling down a tube. We can predict the acceleration and behavior of a falling ping pong ball by balancing the forces acting on the ball, and ultimately compare the theory to the actual displacement tracked by the time of flight sensor.

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Arduino, Data Analysis, Engineering, PythonJoshua HriskoArduino, VL53L1X, Time of Flight, Time-of-Flight, ToF, Arduino Time of Flight, Arduino Code, Arduino Fluids, Fluid Mechanics, Engineering, Engineer, Time of Flight Experiment, Parts, Arduino Uno, Arduino Uno CH340, Pulse, Ball, Drag, Drag Coefficient, DAta, Data, Data Acquisition, Data Analysis, data, Data Visualization, Force, Force Balance, Raspberry Pi Engineering, Raspberry Pi, Raspberry Pi Analysis, Raspberry Pi Engineer, Code, Programming, Programm, programming, Python, Python pyserial, pyserial, pySerial, Python Data, matplotlib, Python matplotlib, Aero-ThermalComment
Internet of Things WiFi and Bluetooth Mesh Network with Particle Argon and Xenon Boards
Internet of Things WiFi and Bluetooth Mesh Network with Particle Argon and Xenon Boards

In the tutorial, the simplest integrated IoT mesh network is explored, where Argon (WiFi + BLE) and Xenon (BLE) Particle boards are used to create an ultrasonic range detector (HC-SR04) that notifies an LED whether a threshold value has been crossed in front of the sensor. When the threshold is reached, a ‘trip’ is communicated to the mesh network and notifies the system via Bluetooth and WiFi.

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Bluetooth, Electronics, ProgrammingJoshua HriskoParticle, IoT, Internet of Things, Mesh, Mesh Network, Xenon, Argon, BLE, Bluetooth Low Energy, WiFi, HC-SR04, Ultrasonic Rangefinder, Ultrasonic, Rangefinder, Programming, IDE, Code Comments