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i decided to use an actuator. the car mechanic ive been going to for a while wrote a note to himself. the next time he changes the actuators on a door lock/central lock system, he's going to give me the actuators/solenoids for nothing. that way i won't have to buy anything. yay.
im trying to find a couple of decent 12volt DC push/pull solenoids. i don't have a ton of money to spend, so im asking for suggestions where i should look. i have a 12 volt motorcycle battery charger for the DC power source, and a 4 channel 12volt DC remote control which I plan on using for...
i am trying to build an electromagnetic lock with 1/2" x 1/8" Neodymium N45 magnets. here is a simple diagram for what i'm trying to do. i need any suggestions, input, or ideas related to this problem.
i want to build a magnetic gyroscope. this video is really interesting, but i don't understand the components involved.
YouTube - one magnet no-bearing "magnetic gyroscope"
it seems the primary gyroscope is in some type of perpetual motion due to the 'magnetic motor??' next to it. it...
i wasn't sure which category to post this in, so i chose this one.
I am a woodworker, and building a 20" x 20" x 20" walnut lockbox. I would like to have a LED light system in the interior, but I don't know where to go, or where to start. I'm looking for any suggestions, advice, hints, etc...
funny thing is, i also wanted to install some type of ipod or cd player inside the box, so music/sound effects actually play when you unlock certain locks or open certain drawers.
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here was an idea i had about using...
well, it doesn't have to be fast. i just thought that would be a neat effect. i do need to incorporate a speed snap motion for a different project still in the works called a scare box. but anyway, back to this project. so the cd/dvd open/close tray...even if it runs off of AC, does the...
i want to 'build' my own solenoid to control a drawer in my woodworking project. it is a walnut box with hidden drawers that contain homemade neodymium magnetic locks. one or more of the drawers i would like a homemade solenoid to control the drawer opening and closing. i have a 4 channel 12volt...
i am a woodworker that enjoys electronics and magnetivity. i make custom woodworking lock boxes with hidden magnetic locks. what i'm trying to conceive is some type of heart rate monitor locking/unlocking device, or a blood pressure band.
two things:
1. if i got my hands on an electronic blood...
I tried making a homemade solenoid. It's not working. I'm using 12V battery (2x 6V), a plastic pen tube with a nail for the core, and thick steel wire tightly wrapped around the pen tube. I think perhaps the wire is too thick or needs to be insulated?. ..and should i try and find a metal...
Re: Scare Box
I think making a solenoid is the answer....but! I tried making a homemade solenoid. It's not working. I'm using 12V battery (2x 6V), a plastic pen tube with a nail for the core, and thick steel wire tightly wrapped around the pen tube. I think perhaps the wire is too thick. ...
Scare Box
This project is a scare prank box. I have a long rectangle box with a wire-cage door at the front. Inside is a homemade scary as crap stuffed animal attached to a dowel. There are extension springs pulling on the cage door so when a switch (problem) is activated, the cage door gets...
I purchased an infrared emitter and detector (radio shack model # 276-0142), and trying to build a remote control button/switch that powers a 3V DC motor (range 1.5-3V). the problem is that the emitter to collector is 5V. Do i need a transistor for the detector? I also want the motor to be...
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