PowerLight: Difference between revisions
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To be implemented, this will probably run on my web page stofradar.nl. | To be implemented, this will probably run on my web page stofradar.nl. | ||
A REST-like resource like http://stofradar.nl:9001/energy/latest | |||
Returns a JSON-structure like: | Returns a JSON-structure like: | ||
<pre> | <pre> | ||
{ | { | ||
"time": | "time": 1657057500, | ||
"total": | "total": 9122, | ||
" | "mix": [ | ||
{ "id": "solar", "percent": | { "id": "solar", "percent": 0, "color": "#FFFF00"}, | ||
{ "id": "wind", "percent": | { "id": "wind", "percent": 4, "color": "#0000FF"}, | ||
{ "id": "fossil", "percent": | { "id": "fossil", "percent": 86, "color": "#FF0000"}, | ||
{ "id": " | { "id": "nuclear", "percent": 5, "color": "#FF00FF"}, | ||
{ "id": " | { "id": "other", "percent": 4, "color": "#444444"}, | ||
{ "id": "waste", "percent": 1, "color": "#444444"} | |||
] | ] | ||
} | } |
Revision as of 22:40, 5 July 2022
Project PowerLight | |
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Show energy mix of dutch power generation as a pie chart on a LED ring | |
Status | In progress |
Contact | bertrik |
Last Update | 2022-07-05 |
The concept
Draw the current power generation-mix as a kind of pie chart on a LED ring light, with colors representing a fraction of a specific power generation source.
For example:
- blue: wind power
yellow: solar powersee belowgreen: power from biomasssee below- purple: power from nuclear
- red: fossil
- grey: other
Power generation data
This is a bit of a problem. There is no open data available with reasonably complete power generation fractions!
The solar power problem
In particular the solar power fraction is incomplete, but also the biomass figures are missing. See:
- https://berthub.eu/articles/posts/dutch-electrical-power-figures-2/ (text)
- https://energy-charts.info/charts/energy_pie/chart.htm?l=en&c=NL note how the solar part is tiny
There is a model to estimate this fraction at https://api.netanders.io/, however you cannot use this API without a key (and you can't just get a key).
Hardware
Parts:
- LED ring light https://nl.aliexpress.com/item/1005003798658173.html
- Wemos D1 mini with an ESP8266
Software
The software consists of two parts:
- backend part that collects the power generation data
- light part that visualizes the power generation as fractions on a LED ring
Backend
Source code: https://github.com/bertrik/energymix-server
To be implemented, this will probably run on my web page stofradar.nl. A REST-like resource like http://stofradar.nl:9001/energy/latest
Returns a JSON-structure like:
{ "time": 1657057500, "total": 9122, "mix": [ { "id": "solar", "percent": 0, "color": "#FFFF00"}, { "id": "wind", "percent": 4, "color": "#0000FF"}, { "id": "fossil", "percent": 86, "color": "#FF0000"}, { "id": "nuclear", "percent": 5, "color": "#FF00FF"}, { "id": "other", "percent": 4, "color": "#444444"}, { "id": "waste", "percent": 1, "color": "#444444"} ] }
- time is a unix time stamp in seconds, representing the end of the period that the power figures refer to
- total is the total current electrical power usage, suitable for display (inside the ring for example), units is MW (megawatt)
- energymix is an array of percentages along with their colors, to be displayed clockwise on the led ring, mandatory fields
- percent
- color
Light
Source code: https://github.com/bertrik/PowerLight