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[Country]

Country	RUS
Note	Repair of stage lighting equipment. It's a job, car electronics is a hobby.

@optikon
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overdrive pulse might help a little bit but wouldn't improve the speed that much. The return spring shall be changed to provide faster return to initial position.
It will be a complete redesign to the solenoid if it doesn't reach 30Hz naturally...

@ur63
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I am planning to use it for laser galvanometer. this shall be a bang-bang control system for deflecting mirrors.

@PM3295
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I am not sure about what you exactly mean by dither. can you please provide some references?

You may use dither to help making solenoids switch faster.
By applying a dither signal, you help improve things like static friction, response time, positional accuracy and hysteresis effects.

Typical Ranges:

Hydraulic proportional valves: 50–400 Hz
Small fast-response solenoids: 200–1,000 Hz
Larger industrial solenoids: 20–200 Hz

The frequency and amplitude of the dither signal should be carefully chosen.

1/ The dither frequency should be high enough that it does not interfere with the solenoid’s main switching operation but low enough to effectively reduce static friction.
2/ If the amplitude is too high, the solenoid may oscillate excessively, leading to noise, heat, and wear.
3/ Often 5–15% of the full control signal voltage or current. These may need to be adjusted experimentally for best results.

Tuning:

1/ Start with a low amplitude (~5% of control signal) and a moderate frequency (~100–200 Hz).
2/ Gradually increase frequency until friction reduction is noticeable, but avoid excessive vibration.
3/ Adjust amplitude to find the minimum level that still provides effective dithering without unwanted oscillations.
4/ Monitor performance (response time, heat, noise) and fine-tune accordingly.

OpenPnp will solve the software part, on the hardware part, you will need to add a vacuum pump, one vacuum valve (for each head), one air/vent valve for each head, and a controller capable of receiving gcode and driving the motors for X,Y, Z and rotation axis A (for one head/nozzle). The rest is to decide on the head nozzles to use and the feeders to use depending on your needs and production volume.   See also: https://github.com/openpnp/openpnp-openbuilds/wiki/Build-Instructions

30Hz, no requirements on stroke length - what's the intended application?
I have a hard time to envision that such cheap solenoid might be capable of fulfilling 30H-50z mechanically, and delivering "some" mechanical travel.

Considering the very low cost of such devices, like you show pictured, if it were me, I would buy one and see how fast I can get it to work by trying it out.
Improving its speed, may be as easy as a brief overdrive pulse... you could just try one. These are crazy cheap.

[Country]

Country	Russia
Note	A`m frilancer

Hi Folks,

I am look for fast Push-Pull Solenoids ( turns on-off) for my project. My requirements is to be able to reach 30-50 Hz (ON-OFF rate).

I don't have any requirements on stroke length. stroke length of 1cm shall be Ok for me.

The internet is full of Chinese solenoids as picture below :



I didn't find any datasheet for their maximum frequency. I only found one video that claims fast switching but this doesn't even come close to my 30Hz requirements.

I kept searching for other options and I found this product : https://www.youtube.com/watch?v=TB17BLS7cMM
The actuator seems very promising but price is not affordable for my small project.


My question, did anyone had good switch-rate with the Chinese solenoids? what max frequency could you achieve ?

any cheap alternatives ?

Lora is not designed for video. it is for long range IOT.
Halow wifi can be a solution


try to follow this topic : https://discuss.ardupilot.org/t/802-11ah-halow-iot-wifi-920mhz/92988

[Country]

Country	italy
Note	pic12f629 specialist hobby