The light tag has no wiki summary.
5
votes
2answers
687 views
Dimmer to bulb control
I need to control a bulb of 220V, with different intensity light levels.
I've an Arduino Uno Board, which receives a variable voltage from a Light-to-voltage converter (TSL12S) (Like a ...
2
votes
2answers
845 views
What parts do I need in order to connect a light to my netduino?
I'm software engineer trying to get a little electronics project working. I have a netduino plus. I want to hook up a huge light like this and make it turn on and off. Where do I start? What would it ...
34
votes
6answers
5k views
Does turning a lighbulb on and off repeatedly use more energy than just leaving it on for hours?
Let's say I have a 60W bulb in a lamp in my bedroom. If I kept the lamp on for 2 hours straight but the next day, I switched it on and off 10 times in intervals of 5 minutes. Which scenario would use ...
5
votes
11answers
4k views
What is the best Magnifier to use for general electronics duties
I am looking for a magnifier tool for an electronics workbench and was wondering what sort of product would be best.
The device must be an all-rounder capable of doing some SMT as well as through ...
7
votes
6answers
10k views
Arduino Home Light Dimming
The drywall is just starting to go up in my family’s basement project. I’ve been looking into residential light control systems. Some of the ones I’ve seen have been an upwards of $2,000. I’m thinking ...
3
votes
2answers
929 views
Powering 10watt light bulb for 24 hours using solar power
I am a total noobi to solar power and even electricity so I appologies if I am asking a silly question.
Imagine I have a 10watt light bulb which I want to leave on for 24 hours a day. Will I just ...
8
votes
1answer
186 views
LED current while off
I have a vague recollection that while off, a LED can actually receive light and generate a small current (in uA).
Is that correct? How does that work? What is the best way to prevent this?
4
votes
1answer
608 views
How to find Emitter and Collector of an LDR
How can we find the emitter and collector of an LDR. I am using it in the following circuit but I don't know how to identify which terminal of the LDR is emitter or collector.
Here it is mentioned ...
4
votes
5answers
422 views
Need comments and ideas for LED flashlight project
I'm thinking about making a simple LED flashlight.
After doing some research, I think I'm going to use some 5 mm 12 Cd white LEDs with 3.6 V drop which can pass 20 mA. I'm not yet sure how much ...
5
votes
3answers
781 views
How do you dim a streetlight bulb?
I'm getting a streetlight, most likely with a HPS bulb (high-pressure sodium).
I'll probably hook up some sort of sensor to turn it on only when someone is actually parking lot.
Why do some ...
-6
votes
1answer
48 views
Ceiling light holder [closed]
I touched the wires of a ceiling light holder with plyers, it made a spark and all of the power in my room was gone. WHAT DO I DO?
