Moving on from “My first GPIO LED”, I decided to take a look at a different LED I had in my possession, an L-59BL/1. This LED has 3 pins and I had no idea what they were for, so I Googled it and found this parts list, and this data sheet. So this LED has […]
Raspberry Pi – BI-COLOR RIGHT ANGLE LED – 2xGPIO Read More »
This tutorial, based on the latest Raspberry Pi B+/model 2, will show you to interface a PIR motion sensor with the Raspberry Pi. And also guides you to use the GPIO pins on it. The GPIO pins on the raspberry pi are critical when it comes to making a hardware project. May it be a
Raspberry Pi GPIO with PIR motion sensor: Best tutorial Read More »
In part 1 of this series, we looked at the basic commands for using software pulse-width modulation (PWM) in RPi.GPIO 0.5.2a and higher. In this article we’ll get a bit more hands-on and into some practical applications for it. It’s all very well being able to make nice square-wave pulses on an oscilloscope, but what’s
How to use soft PWM in RPi.GPIO 0.5.2a pt 2 – led dimming and motor speed control Read More »
The I2C Bus The I2C bus is a two wire bus developed by Phillips/NXP (4-wire if you want to include power and ground), that is used to connect a single master device to up to 120+ slave peripheral devices. The master device is typically a microcontroller, and the slave device(s) is/are typically peripheral chips that
Interfacing an I2C GPIO expander (MCP23017) to the Raspberry Pi using C++ (i2cdev) Read More »
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 »
To measure the indoor or outdoor temperature with the Raspberry Pi, there are several possibilities. This article describes the version with the minimal amount of external components. This is based on the DS18S20 temperature sensor and the software emulation of the 1-wire protocol. The DS18S20 and related DS18B20 and DS1822 are integrated circuits in a
1-wire temperature sensor DS1820 at Raspberry Pi (GPIO directly) Read More »
I have experimented with GPIO on the Raspberry Pi, just turning an LED on and off here. But since then Ben Croston has improved the RPi GPIO Python library to do most of the work in C and I can confirm that it is a lot faster. Driving servo motors requires precise timing, so I
Raspberry Pi GPIO driving Servo Read More »
So you got your Raspberry Pi, installed an OS and using it just like your computer. Great! Now what? You didn’t buy a Raspberry Pi just to replace your computer, did you? Well, Raspberry Pi can do a lot more… much more than your computer can do! Did you notice that there are lots of
Using the Raspberry Pi GPIO with Python Read More »
First steps Like many projects, this one began with Lego. To stop the breadboard sliding all over the place, I created a Lego housing for it and the Raspberry Pi that would keep them conveniently together. My Raspberry Pi is in a PiBow case, which has the pin numbers on it. That was extremely helpful
Make a torch and burglar alarm in Scratch with the CamJam EduKit and ScratchGPIO Read More »
