How Linear Actuator Circuits Work

Рет қаралды 261,384

Күн бұрын

DPDT Heavy Duty Latching Toggle Switch (605048) (Center Off):
www.servocity.com/dpdt-heavy-...
SPDT Miniature Limit Switch with Roller Lever (605634):
www.servocity.com/spdt-miniat...
8mm x 12” lead screw (634050):
www.servocity.com/lead-screws
8mm Lead Screw Nut, 0.770" Pattern (545315):
www.servocity.com/8mm-lead-sc...
8mm Linear Ball Bearings (535226):
www.servocity.com/linear-bear...
8mm x 300mm Stainless Steel Precision Shafting (634314):
www.servocity.com/stainless-s...
8mm Bore Bottom Tapped Pillow Block (535104):
www.servocity.com/8mm-bore-bo...
8mm Bore Bottom Tapped Clamping Mount (585634):
www.servocity.com/8mm-bore-bo...

Пікірлер: 107

@yanwo2359 7 жыл бұрын

Good explanation, and clever use of diodes across the limit switches. And many thanks for no silly sound effects or distracting background "music."

@ServoCity 7 жыл бұрын

Thank you, Yan. We're glad you enjoyed the video.

@graffix 5 жыл бұрын

You have no idea how thankful I am for your video! I am so thankful, I am going to buy my supplies from servocity now! Thanks

@ServoCity 5 жыл бұрын

Larry, we're glad to hear you found our video helpful! As always, let us know if you have any questions tech@servocity.com.

@g.s.3389 5 жыл бұрын

finally a great video on linear actuators!!!! 👏

@jesusllenza7893 7 жыл бұрын

Excellent job, this gave me exactly the Information I needed. I've been looking for this info three days straight on KZfaq. I purchased some of these parts separate, but making them play well together was beyond me until now. My project consist of chicken coop automatic door opener. I am adding a thermostat (too cold wouldn't open), timer when to open and close, light sensor (dawn to dust), and the DPDT with limit switch (plus the diodes) which I now know I need to purchase. Awesome next video for urban chicken owners on how to wire their chicken coop automatic door opener that is self regulated all year round. 10 thumbs up - great job! Extremely thankful for your video.

@ServoCity 7 жыл бұрын

So glad you found our video helpful! Good luck on your project and let us know if you have any additional questions tech@servocity.com.

@ColinRichardson 7 жыл бұрын

Nice video. You answered my "What's the point of the diode" question just as I was thinking it. Good Job. Might be beneficial to link to the parts you used in the build in the video.

@ServoCity 7 жыл бұрын

Thanks, Colin. Glad you found it helpful. We've added the links.

@mazatrolmultiplex1113 6 жыл бұрын

very good demo and useful . thanks

@plokijij7856 3 жыл бұрын

Exactly what I’ve been looking for! Thanks

@billydamnit 6 жыл бұрын

You are an excellent teacher. Thanks

@KulbirAhluwalia 6 жыл бұрын

This is ingenious!

@alanprettyman675 2 жыл бұрын

Well done, very clear and concise.

@PsyrenZero 2 жыл бұрын

Thanks, I recreated this circuit with a relay instead of a switch and a prox switch to drive the coils. Basically created a gate using rope on the shaft with limit switches nearly matching exactly what you have.

@kashv1793 3 жыл бұрын

Thanks for such a good video.That's really helpful.

@zasvvisss 7 жыл бұрын

So informative, many thanks.

@ServoCity 7 жыл бұрын

Glad you found it helpful!

@chrismags2328 6 жыл бұрын

thank you so much for this video :D God bless! :D

@wjf213 7 жыл бұрын

Great video. I've been looking for some thing like this for a Christmas display I'm building. I know you said send your questions to your tech dept. but since this video was posted almost a year ago, they may not know what I'm talking about. My question is, how do I do some thing like this, but with a time delay in returning to the start position, and do it all automatically, once it has been triggered to start? I was looking at a time delay relay. I really want to stay away from electronics and keep it simple with switches and relays since it is an outdoor Christmas display. Thanks and keep up the great work.

@ajamstudios1701 2 жыл бұрын

Thank you for this video... This helped me a lot.

@sangarp2001 6 жыл бұрын

very useful thanks.

@vosviddine95 5 жыл бұрын

Thank you very much. Very very helpfull. Thank you so much.😀😀😀👌👌👌👏👏👏

@favgramp Жыл бұрын

Well done video. Thank you

@user-ur9of6ne8p 6 жыл бұрын

thanks

@lawrencemccoy 3 жыл бұрын

thanks for the info...

@jeffweber8556 6 жыл бұрын

do you have a video explaining how to make the actuator in this video?

@themightymattp 7 жыл бұрын

Could you provide a parts list for this build?

@marknugent9494 7 жыл бұрын

Thanks, I have a technology project to make for my exam and you answered my question, "how do I use a DPDT switch and limit switches in the same circuit."

@ServoCity 7 жыл бұрын

Glad we could help answer your question.

@joedirttae9152 5 жыл бұрын

Great job explaining stuff without annoying music.

@ServoCity 5 жыл бұрын

Glad you liked it and found it helpful.

@Stubby0266 Жыл бұрын

Could you show on how to set up the same system but using relays for higher amperage circuits where the switches, using less amps, to trip the relays to run the motor?

@darkmuppetmaster 7 жыл бұрын

Hi great video thanks. I'm using a 3.7 v actuator running off batteries could you tell me please what diodes I'd need. Sorry my tech knowledge is very low.

@ServoCity 7 жыл бұрын

Partially that depends on how much current it needs to handle. Our diodes (part number 605126) can handle up to 5A and up to 40V. Here is an article (not from us) which has some more info on selecting a diode for your project: ourpastimes.com/choose-right-diode-7433946.html. Feel free to contact us should you have any additional questions tech@servocity.com

@vishwajeetbhagyawant4317 4 жыл бұрын

Hi!! I have some questions.. What is it's load capacity? an will it able to hold the load vertically at some position?? And how to calculate load capacity in vertical position??

@ravikumar.a5600 6 жыл бұрын

I have bye the connector which is placed in linear acututor

@zv3000 6 жыл бұрын

Hi , great explanation thanks for that ! i just finished building an actuator for a project i'm working on using this video as a tutorial although i used a couple of different parts to you. Instead of using a DPDT switch i used a SPDT switch . Well really thats the only difference . there is just one thing that i'm curious about i noticed that when the limit switch is depressed (Regardless of which one is depressed) when i flip the 3 way switch to spin the motor the other direction for a split second you can hear that the motor is taking advantage of all the available power but then once the limit switch is released and both are making contact it's fine . This only happens for a split second until the limit switch is released and makes contact again completing the circuit . Do you think i have anything to be concerned about ? could it be that the Diodes i used are too small?

@ServoCity 6 жыл бұрын

If you want to have a technician review your circuit diagram please email it to tech@servocity.com we'd be happy to help. Thank you!

@evarnado2423 7 жыл бұрын

Just to clear something up, current in a battery flows from negative to positive and current flows against the arrow in the diode symbol. Just wanted to clear that up.

@ppgg997 7 жыл бұрын

Ι have done something like that but with 2 relays...with 1 sounds more simple and clever way to do that. But the problem with both is that the relay coil will stay energized when the terminal switch is open :(

@mazatrolmultiplex1113 6 жыл бұрын

what type of diod did you use?

@wardharriman8965 5 жыл бұрын

Just a note. You don't really need diodes. You can put the limit switches between the DPDT momentary switch (direction) and the battery. The DPDT is then used to select the appropriate limit switch AND select the polarity of the battery. It's a bit more wire this approach eliminates the specification, purchasing, and wiring of the diodes all-together. Just to make it clear, this approach still uses the same DPDT momentary (for direction) switch.... just not the diodes..

@wolfy9005 11 ай бұрын

Diodes are often used to help prevent back-EMF from destroying your stuff though, they're cheap insurance

@mrz6320 5 жыл бұрын

can you provide the diagram in picture pls? I can't really see the wiring of limit switch

@MrRackinroll 6 жыл бұрын

Wow Just what I was looking for. My only question is a proper limit with 4 pole does it have a diode in it. ???

@ServoCity 6 жыл бұрын

Glad we could help. There are two diodes; one for the inboard switch and one for the outboard switch.

@peternewton7991 5 жыл бұрын

Hiya where can I get the same motor from?

@jwhornex 3 жыл бұрын

Extremely informative. Hey, what's the name of the battery you're using?

@ServoCity 3 жыл бұрын

We show this build with a 3,000mhA LiPo battery. But if we were to do it again we'd use this battery: www.servocity.com/12v-3000mah-nimh-square-pack-battery-sub-c-cells/

@omarcabrera3348 4 жыл бұрын

Great Video.... I have a question having to do with this type of actuator. My application would be for automotive. I’m interested in installing a wing on the back of my car, but I want to modify the mounting brackets to accept electric actuators..... so far it’s straight forward. However, I would like to to be wired up with the brakes/brake lights. I want the actuators to open when the brakes are pressed and brake lights come on and the when the brakes are released for the actuators to close. Just like the brake lights.... is this possible?

@ServoCity 4 жыл бұрын

Yes, that is possible. You would need electronics to tie in with the brake signal as you mentioned. Please feel free to reach out to us should you have any further questions to tech@servocity.com.

@rajkumar-lj3dm 4 жыл бұрын

Ac current use pannalama

@davidsohlstrom6977 7 жыл бұрын

good video. One point of interest. The Email I received lists in the components a DPST rather then a DPDT.

@ServoCity 7 жыл бұрын

Thanks, David. We apologize for the mix up. It should say (605048) DPDT Heavy Duty Latching Toggle Switch.

@tars5104 7 жыл бұрын

how does the limit switch gets open or closed?

@ServoCity 7 жыл бұрын

The switches are located on the acme screw inside the actuator tube. The switch will meet a stop when fully extended or fully retracted. Please feel free to contact our Tech Team should you have any additional questions! tech@servocity.com

@BuildswithBrian 3 жыл бұрын

Interesting circuit, but wondering if this works with higher current drawing motors ? I have made the same operating circuit with a latching relay that can can control much higher current. Perhaps a video on that would help some of your subscribers

@ServoCity 3 жыл бұрын

Sweet idea! Thanks for the suggestion.

@analanmanoharraja7602 6 жыл бұрын

What motor you have used in this linear actuator? Please mention how many voltage and RPM motor you have used? I hope that you will reply. Thank you.

@ServoCity 6 жыл бұрын

Hi Analan, I used a 612 RPM Premium Planetary Gear Motor (pn 638284) running at 12V. www.servocity.com/612-rpm-hd-premium-planetary-gear-motor

@analanmanoharraja7602 6 жыл бұрын

ServoCity Thank you.

@kipingky 5 жыл бұрын

is it possible to add pwm dc motor speed controller into the circuit because sometimes I could not find the motor with the right speed for my need in the market here....thanks so much you help me a lot

@ServoCity 5 жыл бұрын

A linear actuator is little more than a motor that's had the rotational motion converted over to linear motion. You can run a motor controller to adjust the speed based off the PWM signal being sent or you can run a motor controller with feedback and tie in the potentiometer so have position control. Step #1 of this ( www.instructables.com/id/Controlling-the-Actobotics-Dual-Motor-Controller/ ) instructable shows how to use the Actobotics Dual Motor Controller for speed control. Step #4 shows how to use the Actobotics Dual Motor Controller for position control. Please contact us at tech@servocity.com should you have any other questions and we'd be glad to assist.

@sachinchakravarthys1807 7 жыл бұрын

Hi I have to discuss with you .

@emilyhuang2759 6 жыл бұрын

At 5:23. would the right one work if the diode switch polarity?

@ServoCity 6 жыл бұрын

Hi Emily, yes it would. Let us know if you have any other questions tech@servocity.com, thanks!

@paryzfilip 6 жыл бұрын

Hi, I've got a question, is it possible to make a motor with lead screw as strong as linear actuator? I want to make a sit-stand desk, if I'll get a high thread-per-inch lead screw and a strong motor, can it hold on as much as a linear actuator? I think it may be cheaper for me than getting two linear actuator of proper size.

@ServoCity 6 жыл бұрын

Hi Filip, you'd basically be creating your own linear actuator by driving a lead-screw with a motor. With the proper selections you can build a mechanism that would have plenty of thrust. If you have any specific questions feel free to contact our Tech Team directly at tech@servocity.com.

@vanrex100 Жыл бұрын

Sir, what diodes you use for that one

@kashv1793 3 жыл бұрын

Can you please suggest a way on making it a three or more position actuator, that will be really helpful.

@ServoCity 3 жыл бұрын

Hello, In many applications, the most flexible way to do this would be using a microcontroller like an Ardunio, combined with a motor controller.

@kashv1793 3 жыл бұрын

Thanks for the suggestion sir, but I'm a noob. I'm just getting started with the arduino stuff. Can you please explain it in a bit more detailed way that would be really helpful sir.

@ServoCity 3 жыл бұрын

@@kashv1793 Please feel free to shoot us an email to tech@servocity.com! Our tech team would be happy to help you out more there.

@user-nu6cg9cb2e 2 жыл бұрын

How / where in the circuit would a led signal light go to indicate extended (red) & retracted (green)?? Thanks.

@razidaufaa9626 3 жыл бұрын

Nice video sirr:). I am sorry, i want knowing your part name ??

@koniako1982 3 жыл бұрын

Great video!!!! I am struggling to find this kind of motor! Any idea here?? Thanks in advance!!!

@ServoCity 3 жыл бұрын

In this video, we used an HD Premium Planetary gearmotor. You can find it on the motors page of our website! www.servocity.com/motors/

@koniako1982 3 жыл бұрын

@@ServoCity thanks a lot for your reply and the link! I found my solution then!

@bravogolf5905 2 жыл бұрын

@@ServoCity You don't state which RPM you selected?

@MrBANDITmc 5 жыл бұрын

Hello, im interested in robotics and would like to build this for a short film im making, with your permission could i purchase the plans off you? I need to re-create this machine

@tedbastwock3810 3 ай бұрын

Is it ok to reverse the diodes so the cathodes face one another instead of the anodes?

@Zxenmusic 7 жыл бұрын

Servocity has no cranks. How do I build a piston with a motor? Worm drives are too slow.

@MrBANDITmc 5 жыл бұрын

Also, how did you connect the lead screw to the motor, and how many rpm is that motor as ive noticed a few variations on your website. Cheers

@ServoCity 5 жыл бұрын

Hello Nate. Feel free to use that design. It has been a while, but I believe (and I think I can see at 1:02) that it was a 612RPM motor (sku 638284). The lead screw is connected with a coupler. I would recommend 625091. Here are most of the other parts used: 555176 (motor mount) 1612-0815-0045 ( linear bearing) 585640 (clamping mount for linear bearing) 585004 (pattern plate for base) 634314 (shaft) 3501-0804-0300 (lead screw) 545315 (lead screw nut) 545404 (pattern mount for lead screw nut) 585634 (clamping mount for shaft) 585720 (pattern plate for gantry) 535104 (pillow block) 605126 (diode) 605634 (limit switch) 605626 (limit switch mount) 585399 (mini channel under base) 585404 (beam as a trigger for limit switches) 605048 (toggle switch) don't remember for sure but I think I used a 585403 and maybe a washer to mount the 5-hole beam. Feel free to send an email to tech@servocity.com should you have any other questions!

@MrBANDITmc 5 жыл бұрын

@@ServoCity thanks guys!! I really appreciate you responding so quick

@MrBANDITmc 5 жыл бұрын

I forgot to ask what power source you used?

@user-ce1pj9ei9d 6 жыл бұрын

Hi. give me a schematic?

@edwinj.negron9584 7 жыл бұрын

Hi. Which motor are you using? How much RPM?

@greengeckodesign 7 жыл бұрын

612 RPM, Part# 638284 www.servocity.com/612-rpm-hd-premium-planetary-gear-motor

@BigFatRoundCuddlyTed 2 жыл бұрын

Can you please help? Every tutorial I have seen, including yours, describes a circuit with just 2 diodes. I have 3 actuators, all faulty, and all 3 have circuits with 4 diodes, 3 orientated in one direction, with the 4th the opposite way around. The board has 16 nodes, 8 along the centre with 8 wires coming from it, and 4 above and 4 below this row of 8, to which the 4 diodes are soldered in place. Each of the limit switches has 3 wires connected to it, coming from the circuit board. The actuators operate from a 12v DC supply, so these circuits are NOT rectifiers, but instead seem to be a more unnecessarily complicated way of achieving the same purpose. They all seem to have issues with their circuits, but I am at my wits end trying to figure out how the current flows. Do you have any experience with these circuits, and if so, any chance of help please? Thank you, Alan.

@eleazarmina7239 6 жыл бұрын

how to create this?

@ServoCity 6 жыл бұрын

Hi Eleazar, you can contact our Tech Team directly at tech@servocity.com or 620.221.0123 with any particular questions about this particular build. At this time, we do not have this particular demo posted as a build online, but our team would be glad to help answer any questions you have about it.