Recent content by T.O.E Dream

Is there a way to change visible light like the light coming out of the screen you're reading into infrared or any other invisible light and then take that and change it back somewhere else? What I'm what I'm trying to do is make a computer screen or maybe a T.V screen visible to only those who...

Cool, i checked out the link and it's sort of what I had in mind. But I don't know if I can build it. Any ideas of how I can do it?

I need to make a basic robot (two wheels, two motors, etc.) follow me or a sensor, that will be attached to me. How would I do this? For example, I can have an IR Emitter on me and like two IR sensors on the robot; one that controls the left motor and one controls the right motor. I don't have...

I need to build a hand cranked generator that can create enough electricity to maybe charge a cell phone. How would I do this?

In the summer most of us turn on our air conditioning and we use lots of electricity in the process. But by cooling our home we're just taking heat out our homes. Heat is a form of energy. If we are taking heat away why are we also using electricity in the process? Can't we turn heat into...

Can I use an IR sensor?

So can i get help or not. The device doesn't need to be perfect aslong as I can demonstrate it can detect flames.

I'm in grade 9. But I know basic circuits.

Well, I don't really have a budget, just don't want to spend a lot of money (100-150 dollars). The project isn't that big, just want to do a good job.

If you need anymore details just ask.

Well the project doesn't describe what I'm doing, it just tells me that I have to create something that solves a problem. What I'm trying to do is have something that monitors a pot or anything else on top of a stove that would signal an alarm when a fire occurs. How most cooking fires happen...

Yeah, I'm going to place the sensor really close. Is there a way I can use an IR sensor to detect flames? If I place it outside of a pot how can I make sure it doesn't trigger because of hot food?

Maybe I can use something similar to this It's relatively small and can detect flames. How does it work?

Yes, sorta. I'm trying to create something for a project which requires a flame detector for cooking fires. It's one part of it. I need something really small that will detect flames.

mgb_phys you've provided a truly funny story. Sorry to inturupt it. Let me be more specific once again. I want to detect when a fire starts in a cooking fire, more specifically, a grease fire like one that happens in a pot over the stove. I'm thinking (but not sure) maybe I can use a...