All Questions
19
questions
2
votes
1
answer
5k
views
What is the difference between push and pull solenoid? [duplicate]
I want a solenoid that stays retracted and propels forward when current is passed through it. Is there a solenoid that does this? What is the difference between push and pull solenoid?
- 729
1
vote
3
answers
727
views
Switching between +9V and -9V (using 5V logic)
I got some linear actuators today and found out that when I give them +9V they extend and -9V makes them contract. This is easy enough to test by hand, simply by wiring the actuator up to the battery ...
- 121
1
vote
1
answer
1k
views
Are electric linear solenoids the best option to push a capacitive screen button on a smartphone? [closed]
I'm trying to figure out if electric linear solenoids are the best option to activate an interface element on the touch screen of my smart phone.
I have also heard of linear actuators and pneumatics ...
- 23
1
vote
2
answers
813
views
Solenoid Fail - No Force
I have designed and built a small solenoid and... it doesn't exert any force on the steel bolt I am using as a plunger. I could freely move the plunger back and forth without any resistance.
I am ...
- 321
1
vote
1
answer
216
views
NO/NC AC Actuator
I'm looking to build some projector cases for a school gymnasium which is a high dust environment. I'm looking to create an enclosure with a solenoid/servo/actuator that will open the enclosure at the ...
- 111
1
vote
1
answer
140
views
Fast, long linear motion (about 60 cm/ 23 inches) [closed]
I'm currently researching a way to build a punch imitation (for boxing training) and for this i need a simple, fast (if it can be configurable great) and long linear motion which can handle a ...
1
vote
0
answers
45
views
Small lock actuator controlled by single lipo
I am working on a project, in which I have a small box, in which I need it to be locked from the inside. It will have a panel on the front to enter in a code to open it. It needs to be very small, ...
- 736
0
votes
2
answers
3k
views
Robotic button pusher [closed]
I purchased a Gigapan Epic Pro a while back (www.gigapan.com).
I love this device but I would like to be able to access the buttons on it, from a distance. (I want to mount the unit on top of a ...
- 17
0
votes
4
answers
5k
views
Should I use a permanent magnet inside a solenoid for an electromagnet shuttle?
I'd like to make some kind of actuator/vibrator but much stronger. I thought of using a static, tubular solenoid, driven with AC current. Inside it would be a mobile permanent magnet cylinder (...
- 249
0
votes
1
answer
5k
views
Looking for linear solenoid actuators less than 2 cm in length [closed]
Do such parts exist? Are they cheap?
I want to take a sheet of plastic and cover both sides with solenoids, some aligned in the X direction and some aligned in the Y direction. With at least a ...
- 211
0
votes
2
answers
168
views
Actuating Pencil To Draw Waveforms
I am looking to make a pencil whose tip moves to create a waveform as you move it across the paper.In essence, I want to be able to record a sound and then play the sound through the pencil whilst I ...
0
votes
1
answer
222
views
Long Stroke Solenoid Actuator
I'm wondering if it's possible to create a solenoid actuator that would be very powerful, and fast enough to keep up with a human's movements, and also relatively long (roughly 7 inches).
I found ...
- 1
0
votes
2
answers
935
views
Using a solenoid to open a door
I'm trying to rig up my door to be unlockable using RFID and an Arduino. The problem is the actual mechanics of unlocking the door. There's a few limitations:
I can't actually unlock the door. It's ...
- 525
0
votes
1
answer
32
views
Linear Solenoid Pulsed
I have this part from RS: https://docs.rs-online.com/4238/0900766b81679254.pdf.
I understand quite well about why the solenoid can output more force (given same distance) or have higher power input (W)...
- 401
0
votes
0
answers
55
views
How does this motor work?
I have been on a bit of a quest to find some sort of linear motion device to compress a spring with 15kg of force 80mm at 1600mm/s, with continuous duty cycle, ideally under $40. So I was digging for ...
- 43