I’ve always been intrigued by those “control panels” with lots and lots of numbers on them. It seems so much like old science-fiction movies with unmarked buttons all over the place.
That and the terror of the linear scale felt like a good reason to try out something new:
Ok, so here’s the idea:
- you’re looking at four copies of the display next to each other, with different readings
- the vertical scale is power production (top half) and power consumption (bottom half)
- green is production (+), red is consumption (-), and blue is the difference (+ or -)
- it’s logarithmic, top and bottom are 5000 W produced and consumed, respectively
- the green and red dots are also log-proportional, the blue circe has a fixed diameter
- the center has a ± 50 W dead zone, i.e. everything in that range is collapsed to a line
Now the examples, from left to right:
- end of the afternoon, no solar power, about 260 W consumption
- induction cooking, consuming about 2500 W
- night-time, house consumption is 80 W
- daytime, 1500 W production, 200 W consumption
Those last two readouts were simulated since I didn’t want to wait for a sunny winter day :)
The data is shown LIVE, and I’m going to keep it around to see whether this is an intuitive way of presenting this sort of information. It’s all implemented using the HTML5 canvas.
PS – I’ve since switched to “sqrt” i.s.o. of “log” for scaling. Looks nicer with large values.