Hadoop is all about processing large amounts of data (so-called Big Data) across a cluster of nodes. In this case, the nodes are Raspberry Pis and Nigel Pond has written a PDF tutorial on how to do it. Read it…
Category: Tutorials
Bitcoin mining on the Raspberry Pi made easy with Minera
Kurt Roesener has written a tutorial which gets you up-and-running doing Bitcoin mining on the Raspberry Pi. He uses a Linux distribution called Minera and takes you through downloading, installing and then using the image. Well worth a look if…
Write your own Scratch game on the Raspberry Pi
It seems like ages since I featured anything using Scratch. Thanks to Pi Weekly for spotting this one. Here’s a nice tutorial from Stuart Andrews in which he creates a nautical-themed game using Scratch. If you want to get started with Scratch,…
Control a Raspberry Pi-powered RGB LED from your Android phone
PubNub are fast becoming a company to keep an eye on in the Pi world. They’ve produced a few articles so far that use their online service and it’s time for another one. Kevin Gleason has written a tutorial for wiring up an…
Troubleshooting Raspberry Pi HDMI/VGA adapters
Using VGA monitors with the Raspberry Pi requires you to plug an adapter into the HDMI port. Sometimes, there are issues with screen resolution. Sometimes, there are issues with absolutely nothing appearing on the screen. To help with some of these…
Create a 3x3x3 LED cube with the Raspberry Pi
Jacob from Coventry Makerspace has taken 27 LEDs and soldered them together as a cube. He’s then hooked up each of the 9 columns of LEDs to GPIO pins and also to ground, via transistors. The transistors are also hooked up to…
Basic temperature reading and logging with the Raspberry Pi
Matt over at Raspberry Pi Spy has written a great tutorial on using the BMP180 to take temperature readings over I2C and then logging them online via thingspeak.com. He’s provided all the code online for you to download and full wiring…
Create a Raspberry Pi wi-fi hotspot with the Edimax EW-7811Un dongle
Many people have these lovely little dongles from Edimax. They’re cheap, tiny and work very well with the Raspberry Pi. Dave Conroy has written up a method to turn your Pi into a wi-fi hotspot using one of these dongles…
Raspberry Pi dog monitor – with lasers!
Dave Young wanted to stop his dog from jumping up and taking food off the kitchen work surfaces (I can sympathise!) when he wasn’t in the room. So, he hooked up a laser detector circuit to a Raspberry Pi and programmed…
Raspberry Pi motion sensor with realtime alerts
Eric Grossman over at PubNub has written an interesting tutorial which uses an ultrasonic distance sensor. The sensor detects motion by taking constant readings and then uses the PubNub service to ‘subscribe’ to any alerts generated. Read more here.