A small and affordable computer that can be used to learn programming and utilize a variety of sensors, solve problems and have fun.
RPi Node-Red: Button + Buzzer
December 11, 2019Goal: The push-button, RGB-LED, and buzzer lessons have all presented input and output separately, but in this lesson we'll be combining them for the first time. Composing input with output and vice-versa is one of the things that makes node-red so powerful! What you will learn: How to link Input (Push-button) with output (Buzzer) using node-red. Also how the buzzer and button can be wired to the pi at the same time.
RPi Node-Red: OLED Display
October 19, 2019Goal: Connect and configure an OLED module to display information What you will learn: How to connect an OLED module that uses an SDA and SCL communication protocol. What you will need: - Raspberry Pi - OLED module - Jumper cables
Rpi Node-Red: Car Kit Battery Gauge Dashboard
September 22, 2019In this lesson you will add a battery gauge to your web dashboard!
RPi Node-Red: Car Kit Assembly
September 20, 2019Goal: Assemble a Rpi Car from the parts kit What you will learn: Special considerations for connecting sensors and screens, and how all the parts go together. What you will need: Full RPi car kit
RPi Node Red: Logging Data to Thingspeak
July 18, 2019Goal: Setup thingspeak, an online data logging service that allows you to create and view graphs online. Send data from node-red to thingpseak and log your own data online. What you will learn: What thingspeak is, and how to configure node-red to send data to it.
RPi Node Red: Remotely accessing node-red and VNC
June 7, 2019Goal: Access your node-red flows or even your Raspbian desktop remotely from another computer. What you will learn: How node-red exposes itself over the network, and how to access it. Also what VNC is and how it helps you use your raspberry-pi remotely.
RPi Node-Red: Inject + Debug = Hello World
April 7, 2019How to use the inject node to send the phrase "Hello World!" to the debug terminal 🙂 This is a classic getting started example and is usually done when first learning to program in a new language.
RPi Airquality Station: Logging Airquality-Data to Grafana
January 28, 2019Goal: Log data to an online grafana database, and then view the resulting graphs and maps. What you will learn: Configuring easybotics air-quality sensors, setting up the grafana logging node viewing the logged data.
RPi Node-Red: BME280 Temperature Pressure Humidity
December 6, 2018Goal: Start reading Temperature, Pressure, and Humidity data from a BME-280 sensor; and then graph it on the node-red dashboard. What you will learn: How the BME-280 communicates with node-red, and how to setup node-red to use the data usefully.
RPi Node-Red: Buzzer
October 27, 2018Goal: Use node-red to output onto the GPIO pins to make a piezoelectric buzzer go off. What will you learn: How to output onto the GPIO pins using node-red, and how a piezoelectric buzzer works.
RPi Node-Red: RGB LED
October 1, 2018Goal: Introduce the power and utility of the raspberry pi's GPIO pins by using them to control a RGB LED Module. What you will learn: What is a GPIO pin and how does it work, how does it relate to node-red. The technical steps of wiring the LED module to your rpi, and getting the software to interact with the hardware.
RPi Node-Red: Push Button
September 28, 2018Goal: You can use the GPIO pins can be used for output, like making the RGB Module change colors, but most of the time you will using them as in input device. Sensors like the BME-280 can send data about weather, or a sonic sensor can tell you how close something is. However the simplest possible sensor is a button that simply reports on or off. The goal of this lesson is to learn how to start using node-red to receive input through the GPIO pins. What you will learn: How to read the state of a push-button wired to the GPIO pins through node-red.
RPi Node-Red: Ultrasonic Distance
June 7, 2018Goal: Read distance measurements from the sonic sensor within Node-Red What You Will Learn: How the ultrasonic sensor is wired and how it can be programmed.
RPi Node-Red: Neopixel LED Ring
May 24, 2018Goal: Use node-red to control a LED ring What you will learn: About nodes that take more complicated input such as strings, and specifically how to setup a LED ring flow in node-red.
RPi Node-Red: Camera
May 23, 2018Goal: Install the Raspberry Pi camera and take a picture using node-red What you will learn: How to install a Raspberry pi camera, and how to configure the node-red camera node to actually produce images.
RPi Node-Red: PIR Motion Sensor
May 22, 2018Goal: Setup a PIR motion sensor and read its output in node-red What you will learn: What is a PIR motion sensor, how it's wired to a raspberry pi, and how to setup node-red to read its output.