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Electronic components that can pull a string around 5cm and then suddenly release it?

I have very basic electronics knowledge. I'm looking to build a very simple circuit that pulls on a string which will start a pendulum swing. I was initially thinking using of a using linear solenoid ...
ML learner's user avatar
1 vote
0 answers
209 views

Control a solenoid position "in / out" with power only (no spring)

I'm going to use a < 5$ solenoid (vertically oriented) that has to press something. If I understand well, a linear solenoid like this one: moves to one precise position when powered, but when you ...
Basj's user avatar
  • 2,178
0 votes
1 answer
174 views

Solution for solenoid valve with can give flow without power? or any other alternative way of it?

I want to use a Solenoid valve for my project, the valve will be used for water in which is facing one problem if there is no power, how can we get water from the valve, I don't want to add any kind ...
Awais khan's user avatar
0 votes
2 answers
2k views

Increase Force of a Solenoid

I tried to build a circuit that would allow me to push a washing machine's start button remotely using a solenoid as an actuator. The solenoid is wired to a 9v battery which also powers an ESP8266 ...
Artium's user avatar
  • 287
0 votes
2 answers
989 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 ...
ItsAmy's user avatar
  • 527