Open source monitoring for electricity, solar, storage, heat pumps and electric vehicle charging. A versatile and expandable system of sensors and integrations built on the Raspberry Pi and Arduino platforms. Expandable. Extensible. Self hosted.
Documented is an investigative watchdog and journalism project committed to holding the powerful interests that undermine our democracy accountable.
We believe that hard-hitting, investigative journalism is needed now more than ever.
Corporations and wealthy donors have far too much power and influence in our political and justice systems. Profits and shareholders are too often put ahead of everyday people. The very real and urgent dangers of climate change are being downplayed or ignored. Our democracy itself is under attack.
None of us are neutral in these fights, and we don't pretend to be. Documented works to level the playing field by pulling back the curtain on those in power to expose corruption. We publish and report on documents, audio, video and other materials that lay bare corporate interests and their network of operatives’ best laid plans to rig the system.
Documented passionately believes that investigative journalism that holds the powerful accountable, serves a critical role in society. To have as large an impact as possible, we frequently partner with other journalists and media outlets with far greater reach in both formal and informal capacities. We do this either as media partners, or as issue experts. If you are a journalist or editor, we have more details on how to contact us about partnerships here. We also occasionally provide our research to non-profits, academics, policymakers or other interested groups for use in their work.
The findings of our investigations have appeared in most (if not all) major US print, online and broadcast news outlets. This has included The Washington Post, The New York Times, The Guardian, The Intercept, NPR, MSNBC and CNN. Our research and reporting has been frequently cited by policymakers, in particular during congressional oversight hearings, and has been used repeatedly by campaign groups pushing for progressive change.
The AEMSUCA is a 15x20mm board for the AEM10941 Solar Harvesting IC from E-peas. It efficiently converts solar panel energy into SUperCApacitor charge, it even works with indoor light. It features two regulated outputs that are enabled when the supercapacitor has sufficient charge, and a low voltage warning that informs the user of impending shutdown when the supercapacitors run low. It easily integrates in other projects because of the castellated via's, and when soldered onto 0.1' pitch header it fits in a bread board.
This board is special because it integrates maximum power tracking, supercapacitor charging and two regulates outputs in a tiny and easy to integrate board. There's is no other board with so few passive components.
This LED calculator will help you design your LED array and choose the best current limiting resistors values. To get started, input the required fields and hit "Design Circuit." Does the math for you, will output either a wiring diagram or schematic. Useful because it gives you defaults to start playing around with (who knows how many mA an LED draws off the top of their head? even I don't.)
This project aims at building an ultra low power adapter (< 1uA quiescent current) that you can bring onto modern smart energy meters to read the energy usage.
The optical interface consists of an IR photodiode to read data from the smart energy meter, and an IR emitter to send data to the smart energy meter. The infrared reader has an automatic calibration to ambient light conditions to be more resilient against ambient infrared light.
4 wires: VCC, GND, RX and TX. RX is for receiving UART data from a microcontroller, TX is for sending the optical data to a microcontroller. So usually you want to connect TX to the UART input of your microcontroller to get your readings from the smart meter. RX can be left unconnected if not used. The supply voltage may be between 1.8V and 5.5V.
The project started when my mechanical Ferraris energy counter was replaced with a digital smart meter from eBZ. The DD3 model provides an IR signal which can be read once a second with a simple IR receiver. Initially I used just an Arduino with a photo transistor circuit on a breadboard to read the signal. Later I have built an IR dongle on a real PCB in a nice case for permanent mounting on top of the smart meter.
For the software side, the Smartmeter program reads the raw stream of data from the energy meter and forwards it as a JSON formatted string to a MQTT broker on the network. The data is stored in a TimescaleDB database and visualised on a Grafana dashboard.
In the AUR.
We at Bitbinders have been developing professional hardware and software solutions since 1982. Our founder had a very long love affair with Commodore computers (and a shorter fling with Atari's!) He founded BitBinders decades ago and mostly did programming to enhance his main career as an engineer and later as an manufacturing executive. There were many developments but perhaps two of the more interesting included some pretty fancy linear programming for foundries and early-90's machine vision for controlling welders. Non-main career commercial successes included "RadBench", a Visual Basic add-on licensed and published by the Crescent Division of Progress Software. His "second career" is now focused on BitBinders retro-computing products, grown from a true passion for retro-computing.
The really interesting thing is that they sell replicas of the Commodore 1581 3.5" floppy drive that are 100% compatible. They sell a couple of variants (one and two drive units) and are engineered with future upgrades and repairs in mind. They're pretty expensive but they're re-implementations using modern components. They also sell replacement power supplies for Commodore computers.
Another online electronic components store.
The online store of somebody in England who makes small, specific purpose devices for electronics hobbyists. If you need something odd, chances are he's made such a thing already.
What started as just a simple tool for managing Nvidia GPUs from command line or in text mode evolved into a project that now lives up to it's Blissful designation! I present to you "Blissful Nvidia Tool" - a lovely little tool for admining your modern (Maxwell or higher should be supported) Nvidia GPU from the command line on Linux. It only requires Python3 and pynvml/nvidia-ml-py and up to date drivers. It's capable of over and underclocking, changing power limits, controlling fans, and has a nice little curses based monitor built in capable of nearly realtime monitoring of GPU status with support for saving and loading profiles! It also supports fully offline operation meaning it can be called in scripts and the like. You accept ALL responsibility for the use of this tool. Monitoring can be done as any user but overclocking control requires root. License is MIT.
I've reverse engineered the power board from a Thinkpad 700C. The P/N is 35G4785, and the FRU number is 48G3712. A very similar or identical board is also present in the Thinkpad 700. The schematic isn't perfect. Open a bug report if you find a mistake. Not all components were identified. A number of parts did not have designators on the silkscreen, so I assigned them new ones starting at 300.
The circuit board has four layers and an aluminum core, presumably for heat dissipation.
Do not fabricate this design. The PCB layout is for reference only. There are ground plane cuts in layer User.9 that need to get transferred to the ground plane. There are minor footprint differences as well. There are still unidentified components in the bill of materials.
Among other devices, Keelog sells a line of replacement power supplies for retro computers, from the Commodores to Amigas to Ataris. They are all brand new designs engineered with longevity and safety in mind.
This is a little sun powered board with ultra low power consumption and zero maintenance. It measures temperature, humidity, pressure and sends it every 15 minutes with a RF module. The small solar panel (8 x 6 cms) harvest energy to charge two small and cheap super capacitors of 5F each. It can run alone almost forever, at least until the caps die. But supercapacitors have a much longer lifespan than batteries. It can survive without sun about 80 hours, more than 3 days! I tested it with the solar panel disconnected. This is also environmental friendly as it produces it's own energy and don't use batteries with it's 'dangerous good regulations' (DGR) for handling, disposing, etc.
It seems like this project would be a good way to learn about using supercaps to run things.
PowerOutage.us is an ongoing project created to track, record, and aggregate power outages across the United States. This site has tracked some major events, including hurricanes, grid failures, and other weather events. You can view some detailed information about them here.
Click on a state to see more detailed info.
Data is updated site wide approximately every ten minutes.
They have a REST API but there is no free tier.
It's not that other energy monitors are bad, but they are different in that they are mostly closed systems that provide limited data and require that you use their cloud and phone app platforms. IoTaWatt collects many more metrics and stores that usage history locally. With it's integrated web-server you can manage setup, view real-time status or create detailed graphs using the browser on your computer, tablet or phone. It's your data, in your own home, and subject only to your own privacy and retention policy. You don't need the cloud to get a handle on your hot-tub, EV, solar or heat-pump.
IoTaWatt can, however, easily upload usage data to any of several third party databases with associated apps and analytic tools. For instance PVoutput is a free service that connects easily with IoTaWatt and provides world-class solar energy analytics. There is full support for uploading to influxDB. There is also an API interface for those who want to query data for their own applications or to use in spreadsheets, and there are integrations available for home automation software like Home Assistant.
Can be used to monitor just about any power system on the planet. USian 120/240VAC, European, 230 VAC single-phase, 230VAC three-phase in Australia, Germany, and Norway.
IoTaWatt measures each circuit using a passive sensor that clips around one of the insulated wires. The output of each of these current-transformers is very low-voltage and plugs into any one of IoTaWatt's 14 inputs. Sensors plug into the unit with regular phono plugs.
Fully tested and in compliance with regulatory and safety standards of North America and Europe.
Github: https://github.com/boblemaire/IoTaWatt
Online store: https://stuff.iotawatt.com/
If you only want to monitor power for the whole house, you only need the base kit and two induction sensors (one for each side of the split-phase). $260us
Automatic CPU speed & power optimizer for Linux based on active monitoring of laptop's battery state, CPU usage, CPU temperature and system load. Ultimately allowing you to improve battery life without making any compromises.
One of the problems with Linux today on laptops is that CPU will run in unoptimized manner which will negatively reflect on battery life. For example, CPU will run using "performance" governor with turbo boost enabled regardless if it's plugged in to power or not.
Issue can be mitigated by using tools like indicator-cpufreq or cpufreq, but these still require manual action from your side which can be daunting and cumbersome.
Using tools like TLP can help in this situation with extending battery life but it also might come with its own set of problems, like losing turbo boost. With that said, I needed a simple tool which would automatically make "cpufreq" related changes, save battery like TLP, but let Linux kernel do most of the heavy lifting. That's how auto-cpufreq was born.
Please note: auto-cpufreq aims to replace TLP in terms of functionality and after you install auto-cpufreq it's recommended to remove TLP. If both are used for same functionality, i.e: to set CPU frequencies it'll lead to unwanted results like overheating. Hence, only use both tools in tandem if you know what you're doing.
In the AUR.
The California Independent System Operator (ISO) maintains reliability on one of the largest and most modern power grids in the world, and operates a transparent, accessible wholesale energy market. The organization works diligently around the clock to meet the electricity needs of consumers, while increasing the amount of renewable energy to usher in the clean, green grid of the future.
The California ISO provides open and non-discriminatory access to the bulk of the state’s wholesale transmission grid, supported by a competitive energy market and comprehensive infrastructure planning efforts.
Things of interest: Emergency notifications, daily briefings, API, power grid status, and electricity pricing.
http://www.caiso.com/TodaysOutlook/Pages/prices.html
I really need to figure out how to monitor this.
Open Infrastructure Map is a view of the world's infrastructure mapped in the OpenStreetMap database. This data isn't exposed on the default OSM map, so I built Open Infrastructure Map to visualise it. If you want to edit the data and you're new to OpenStreetMap, check out learnOSM.
If you already have some OSM experience and want to start tagging infrastructure things, take a look at the tagging guidelines for power and telecoms.
How to configure later-generation nVidia drivers to do their own power management now that it's supported on some models.
Applicable to Turing GPUs and Coffee Lake CPUs. Windbringer does not have the former (the GTX 1050Ti is a Pascal architecture, not a Turing architecture). Still, there are options.
This is the PSU board for all your retro modding needs like making a GameBoy Zero with any of the Raspberry Pi products and it’s Clones like Orange Pi, Banana Pi etc, it has even powered Robots. This board has all the features the modding community wants and needs for their build into a small and powerful package. Outputs up to 6A @ 5.20v. i2c enabled, so the power cells can be monitored.