The Raspberry Pi does not have any analog inputs, but that does not mean that you can’t use some types of analog sensors. Using a couple of resistors and a capacitor, you can use a “step response” method to measure resistance. Which is just great if you are using a pot, photoresistor or thermistor. The […]
Analog Sensors without Analog Inputs on the Raspberry Pi Read More »
TimeMachine is the way to backup your data on Mac systems. The backup and restore procedure work nicely out of the box with very little hassle involved. I used to backup my data on a local USB disk for some years. However, backups to a USB disk require you to connect the disk, otherwise no
Create a TimeMachine Backup Storage on the Raspberry Pi Read More »
To keep the price of the raspberry pi down the developers left out some of the essentials one of those is the real time clock. At the moment the raspberry pi gets it time over the Ethernet from updating the time automatically from the global ntp (nework time protocol) server, but this means that when the Ethernet is unplugged
Step by step guide on how to setup Raspbian, and communicate with a SPI device using bcm2835 SPI library (NOT bit banged!) This is still very preliminary… I need to add better pictures of physical hookup, and work through some of the awkward code. Step 1: Starting with a blank SD card, download Raspbian
Howdy folks! I had the idea of turning my Raspberry Pi into something like the Beats By Dre portable audio system found here: http://www.beatsbydre.com/speakers/beatbox-portable-usb/beatbox-portable-usb,default,pd.htmlIt’s a cool product, don’t get me wrong, but I’m not really down to pay $400+ tax for some fancy looking speakers (which don’t even give you rechargeable batteries, by the way).
Turn your Raspberry Pi into a Wireless Portable Bluetooth Audio System A2DP Read More »
This instructable is all about monitoring the state of relays using a Raspberry Pi. In the particular case we will have a look at a sophisticated Telegärtner DoorLine Pro intercom which holds two voltage-free relays. Normally, those are used to trigger an electric door strike or a doorbell but together with a Raspberry Pi can
The Tweeting Intercom: (Door Strike) Relay Monitoring w/ Raspberry Pi Read More »
Introduction Remote controlling the media center is a major application of Linux Infrared Remote Control (LIRC). There are quite a number of tutorial on how to implement infrared remote control with XMBC/KODI. After following the excellent tutorial published by adafruit.com, my DVD remote control unit can do the basic stuff well. However, as you can
Reuse Unwanted Infrared Remote Control to Use With XBMC/KODI on Raspberry Pi Read More »
There are a lot of Instructables that show how to make a thermostat. But what if you already have a thermostat, and you want to log or monitor when it turns off and on? This Instructable shows how to use an optocoupler to obtain logic-level DC voltages from a common household programmable thermostat that connects
Log and Graph 24V Thermostat Events (Optocoupler + Raspberry Pi) using raspberry Read More »
Originally published in this blog. The goal of this tutorial is to demonstrate how you can read and write from a Bluetooth Low Energy (BLE) device. For example, if you want to read the ‘number of steps’ data from your fitbit and make interesting apps with it, In this tutorial, I am using a RedBearLab
Bluetooth Low Energy: Read-Write to Sensor Network from Raspberry Pi using Raspberry Pi Read More »
Prototype Step 1: Set up the supply rails Components: – 1 × Breadboard and jumpers. – 1 × M/F jumper cables. Link the rails together as before using the jumpers and connect the M/F jumper cables to the rails (red to 3.3V, black to GND). You may choose to use jumpers of other lengths instead
Raspberry Pi Turing Machines Read More »
