Projects

PowerTOP

PowerTOP is a Linux tool that finds the software component(s) that make your laptop use more power than necessary while it is idle. As of Linux kernel version 2.6.21, the kernel no longer has a fixed 1000Hz timer tick. This will (in theory) give a huge power savings because the CPU stays in low ... [More] power mode for longer periods of time during system idle. [Less]

ACPI

Linux ACPI client is a command-line tool, similar to the "apm" command, that provides information on battery status, AC power, and thermal readings.

gnome-power-manager

GNOME Power Manager is a session daemon written in C that controls high level policy for laptop and PC machines. It uses the power management objects from upower.

PowerAPI

PowerAPI is a Scala-based library for monitoring energy at the process-level. It is based on a modular and asynchronous event-driven architecture using the Akka library. PowerAPI differs from existing energy process-level monitoring tool in its software orientation, with a fully customizable and ... [More] modular solution that let the user to precisely define what he/she wants to monitor. PowerAPI offers an API which can be used to define request about energy spent by a process, following its hardware resource utilization (in term of CPU, memory, disk, network, etc.). [Less]

Powersave

Provides battery,temperature,ac,cpufreq (SpeedStep,Powernow!) control and monitoring.Proper suspend to disk/ram and standby by shell hooks that are easy to extend.APM and ACPI machines are supported equally.For laptops as well as for workstations.

sunrisetheme

A nice sunrise theme for Google.

watchmyenergyuse

A Windows .NET application that acquires, stores, and presents power and energy consumption data for individual devices in your home. This is a C# project. It will build using Visual Studio 2008 with .NET Framework 3.5. It uses a port of Python code, xbee.py XbeePy, to extract the Zigbee data. ... [More] It uses ZedGraph for near real-time and historical charts, and a Scheduler for scheduling the sampling of the power data for live charting. The database used is SQLite. You must build one or more power monitoring devices that you plug-in to your wall outlets. This page illustrates exactly what to do: http://www.ladyada.net/make/tweetawatt/ Summarized, build the receiver: http://www.ladyada.net/make/tweetawatt/receiver.html Update the firmware and configure all the Zigbee transmitter chips: http://www.ladyada.net/make/tweetawatt/config.html Modify the "Kill A Watt" hardware and install the transmitter chip in each: http://www.ladyada.net/make/tweetawatt/solder.html Finally, monitor and chart power usage of these devices with this .NET desktop application. You can try the code available here. Perhaps you can improve and expand this code. In progress is the hardware for a whole-house monitor to add as a metering device to this project. Also feeding data to the Google App Engine to chart usage on a widget page. A lot like Google Power Meter. Also an install-as-service mode. [Less]

Power usage meter using Arduino

Record your power usage over time using simple and cheap hardware (Arduino) to capture the flashing LED on the electricity meter.