Flash an LED – Works Remotely In this exercise you update your Pi, install the GPIO tools, and write a program to flash an LED ten times. If you use PuTTY to log in remotely, you could flash LEDs on another continent. I have tried it. It works! With the right hardware, you could control […]
Raspberry Pi GPIO and LED Read More »
What Are The GPIO Pins on Raspberry Pi? A great feature on the Raspberry Pi is the GPIO pins (stands for General Purpose Input Output). These GPIO pins on Raspberry Pi can be found in 2×13 header pins which can perform tasks include SPI, I2C, serial UART, 3V3 and 5V power. There are eight of these pins can
How To Use GPIO Pins On Raspberry Pi – Buttons And LED Tutorial Read More »
Before we even get started with the GPIO, lets make an LED light up by simply wiring it to the +3.3v supply and 0v. So… We have a yellow wire from the Pi’s +3.3v supply to the breadboard and this connects to an LED then via a 270Ω (ohm) resistor to 0v. The green wire
Difficulty: beginner This tutorial will guide you through safely connecting up an LED to your Raspberry Pi and being able to turn it on and off from Python. Then you will write a program to take input from the keyboard and send it out in Morse code from the LED. INSTRUCTIONS: If you are using
Morse Code on an LED Read More »
Overview Everyone loves a colorful LED screen! Our 16×32 RGB LED display is a low cost, and easy-to-use arrangement of bright LEDs – just like the ones used in Times Square! This display makes a fantastic addition to your Raspberry Pi. It is pretty easy to wire up, but the display is quite demanding when
Connecting a 16×32 RGB LED Matrix Panel to a Raspberry Pi Read More »
I was looking at the cost of an Arduino and Ethernet shield and thinking that they are quite expensive compared with a Raspberry Pi. So time to update my Arduino RGB LEDs project to run on a RPi. As noted all over the web the Raspberry Pi only has one PWM channel on the GPIO.Â
Raspberry Pi – RGB LED conversion Read More »
A first project – Internet controlled LED In this simple, inexpensive project you can connect a light emitting diode to your Raspberry Pi, and turn it on and off using any web browser. There’s even an app for Apple, Android and Windows smartphones. Prerequisites To run this you will need: A Raspberry Pi (with network connection) An
Control an LED from your web browser or smartphone using Raspberry Pi Read More »
More Raspberry Pi Electronics Experiments – Gertboard and Potentiometer-Controlled LED Cluster Posted on February 3, 2013 by rakanalysis One of the things which alerted me to the potential of the Raspberry Pi as an electronics control system was the announcement of the Gertboard before the Raspberry Pi was released into the market. When the Gertboard was
Solution Connect an LED (see “Opto-Electronics”) to one of the GPIO pins using a 470Ω or 1kΩ series resistor (see “Resistors and Capacitors”) to limit the current. To make this recipe, you will need: Breadboard and jumper wires (see “Prototyping Equipment”) 1kΩ resistor (see “Resistors and Capacitors”) LED (see “Opto-Electronics”) Figure  shows how you can wire
Interface LED with Raspberry Pi Read More »
Lights, Jumpers & the Resistance – Jumper wires are typically 22 gauge solid-core wires with insulation pre-stripped and readied for insertion in or out. Resistors resist the flow of electrical current, thereby controlling WHERE and HOW FAST it flows. [Thought experiment: If controlling water, using thin pipes would let less water through but would flow
Lighting an LED using a Breadboard & a Raspberry Pi Read More »
