2
votes
3answers
126 views

Is there a standard for the positioning of the elevator control buttons?

I've always wondered why elevator control buttons are found where they are. For example, the following image shows the elevator control buttons positioned on the right side. The way I see it, ...
2
votes
3answers
197 views

UI for dimming light

What is the best / natural UI (User Interface) for dimming multiple lighting zones (LEDs) using a microcontroller? Here is what I have thought so far Use rotary encoder to up/dn the brightness Use ...
71
votes
9answers
6k views

Why is the “Record” icon always round and usually red?

I've been wondering why the symbol for 'record' is universally (AFAIK - has anyone seen exceptions?) a circle and usually red. Cameras, VCRs, voice recorders, smartphones, web apps... I've seen cases ...
3
votes
2answers
151 views

Is it better to mirror a real-world system for specialized users?

I'm designing a web interface for a control-center kind of thing that's extremely information-dense because it controls a fairly complex system. To an outsider, it's kind of been like trying to make ...
113
votes
14answers
8k views

Who needs an external on/off Wi-Fi button?

It puzzles me that there are Laptops which are shipped with external physical Wi-Fi buttons. I see no real use of it, but it might have a historical explanation?! The only time one notice the external ...
4
votes
4answers
269 views

Controls on moving controls?

It hit me today when driving home from work turning right in a highly busy crossing. I wanted to lower the music volume but couldn’t find the control without looking. On previous cars I’ve owned, the ...
8
votes
4answers
261 views

Is the middle power option 50% or 60%?

A friend of mine has a blender with 6 control selections: One off position, and five power settings in order of less to more power. Example below: A discussion has erupted over whether or not the ...
12
votes
5answers
2k views

Why do light switches find themselves OUTSIDE the room they light up in some European countries?

Okay, to be fair my experience is mostly with Poland, though I have observed this electrical interior design decision in a few neighboring countries while travelling, but can't generalize there. ...
5
votes
4answers
1k views

Should a light switch be small or big, or does this depend on other factors?

Small and big light switch compared: It's strange that this usually differs by country. The big ones are easier to hit, but the small ones provide better feedback (if you don't immediately see the ...