Archive for the "raspberry pi" Category

Logging Rainforest RAVEn/EMU-2 Data to ThingSpeak (node.js on Raspberry Pi)

Last year, I bought a Rainforest EMU-2 energy monitor.  It wirelessly talks via zigbee to the smart energy meter that SCE installed at my house a couple of years ago. Unfortunately, its logging capabilities are rather primitive. All it does is give you a crude bar graph of the current and previous day’s usage. SCE […]

How to use a WiFi Dongle with Raspberry Pi

My house isn’t wired for Ethernet, so I needed to get my Raspberry Pi networked via WiFi.  USB WiFi dongles are cheap, and can easily be found for less than $10.  I just happened to have an Airlink101 AWLL6075 laying around.  By coincidence, it uses the RTL8191SU chipset, and the official Raspbian distribution is preloaded […]

How to Install Emacs on Raspberry Pi

I just got my Raspberry Pi up and running on Raspbian, and was finding nano, the pre-installed text editor a bit lacking.  I’ve been using Emacs since college, and decided to get it up and running on my Pi.  It turns out that it’s quite simple to install GNU Emacs: $ sudo apt-get install emacs If […]