Electronic Basics #25: Servos and how to use them

maybe a dumb question but i would like to use a servo to rotate a spring/coil to basically create a tiny vending machine
(so upon button press rotate for x amount at y speed to dispense 1 unit)
how would I do this ? and would it require me to use an arduino or can it be done without ?

Thanks bro, i wouald also love it if you made a raspberry pi version of the microcontroller part.

Hi mate, are you still around?

Back around 2004 I 'hacked' a servo to rotate 360° continuously. At the time I could not readily purchase one, or the cost was outside my budget. {Also at that time I had a couple spare servos I could hack.}

I learned two things from this endeavor:
(1) Unless you ABSOLUTELY HAVE TO hack a servo for this purpose, just PURCHASE a commercially made servo that rotates 360°.
(2) Being at the age of 43 at the time {in 2004}, I was starting to need eyeglasses...😊

name of the pen?

Why not just remove the control completely and just feed raw power to the motor if you want it to just keep turning 360+ all the time?

subsribed Scott, thank you for this information.

Anyone else just feel really dumb and not absorb much of any of that? Lol

Kinda interesting… I used a 1 kHz signal with a duty cycle between 20 and 100% and it worked great.

Excelent presentation!

Hey Scott, I love your videos, I need more info about the servo, I'm thinking about making a project, it's called throttle by wire, the goal of the project is to control throttle engine intake with servo , but it seems servo has 'delay' to reach the final state if you twist the controller fast , so, any solution for this ?

excellent!

i got a question that how can we control 5 normal blue servo and 2 black mg ones with one arduino uno pls tell

I love your voice - it perfectly suits the content :)

I wonder if someone can help me,

I need a basic servo that can move at least a quarter inch or a little less, it really doesn’t matter the exact measurement, the moment I push on my remote control. I already know how to connect a remote control but I just need to know if I’m doing this correctly, what I do is I connect one of the three wires to one side of a 9 V battery in the moment the other wires touched the other side of the naval battery, the server gets a little surge of electricity and it moves exactly the way I like it to move but I wonder if I’m doing this correctly, if I may damage the unit and if there is a better way, thank you in advance.

servos can be used to almost annything for example you can make a robot or thomas model

Thks

I love your handwritten explanations. And everything else in your videos. They are always very well explained and thorough - nothing is taken for granted and they are funny as well. And you keep covering new areas. Being an old electronics engineer myself, I still learn a lot from you. Keep it up!

You Packed so much information in the just five minutes thank you 🙏🏾

I'm sure your videos are excellent they do look pretty good. But they assume that the person interested has substantial electronics skills. What I was curious about when I was a kid in the early to mid 70s RC planes and cars existed with servos. What did not exist was computers, breadboards and all the additional components that you add to make modern servos work. How did it get more complicated from what they had in the 70s? The planes flew very well with very sharp turns, steep climbs, dives and leveling out, etc. What happened to the simplicity? It's probably because we have computers which can artificially complicate a project involving more work and money.

'
i use very good HiTec / Traxxas servos are good on my any R/C tamiyas / traxxases...
few futabas servos

Thanks

Thanks for the video mate. Really helped me with an assignement.

That's very convenient I have exactly the same server as you accept my mind says it's towardpro instead of proster

ok so how tf do i fit all of these into a suit

I literally do not understand this entire video

this guy should teach everything, so easy to follow thanks.

I really like your videos
I'm working with servo motor and I observed it's not turning up to 180⁰ but your video helped me alot
I don't even know what to say because this comment session is not enough to tell how explanatory your video had always been.
Love you men 😘 😁

it's a grate video to learn basics of servo motor working.
can make video on industrial ac/dc servo motor and how to control them with servo driver using microcontroller insted of plc it will helpful for me and any other also

Good project
Question:
how can we solve the noise on servo turning?

"Datasheet"

And that is why I need to stop buying the cheapest components possible :(

i have a problem
i want a servo motor to operate in 2 different speeds with 2 diffrent clicks on button
for example normal 120 degree rotation speed at single click and fast 120 degree rotation at double click using on off tactile switch using a cr123a battery.all these using a pcb or arduino in the most smallest space is it possible?

I want to learn

Make a tutorial for IR controlled circuits

Hii

Servo technology hasn't progressed much in the past 20 years. I had hoped a better feedback device might be employed to replace pots which wear out quickly because they rum back and forth repeatedly in the same spot. Maybe a Hall sensor???

Sir, how to reverse the servo motor by using potentiometer in inverted mode.

Please don't ask the tiresome like and subscri... uh, too late.

Of course, potentiometer!
That's what makes servos work!

I don't understand...
Servo doesn't have any "special" cirquitry to receive PWM signal. It's just an analog cirquit which compares voltages. So... PWM has not to be a only a way to generate target voltage for a servo...
If my suggestions are correct, then we can manipulate voltage on a different manner. For example we can use a simple voltage divider assembled from potentiometer.
There is only one problem. What voltages are actualy needed for servo?
If 1ms of 20ms (50Hz) signal is 5% of reference voltage and 2ms is 10% then... I assume that we have a range of 5 - 10% of a reference voltage to turn servo almost left, or almost right...
So.. If our VCC voltage for servo is 5 volts, then we have a voltage range 0,25 - 0,5 volts.

So I took a multi-turn precise potentiometer... Made a voltage divider... Applied control voltage to servo control input...
But didn't' get any satisfactory results. Servo doesn't act as I expected.

May be my suggestions are completely wrong or may be there is only a small mistake which didn't allow me to get a result? What do you think?

Perfect! Thanks a lot for explaining this material.

Great video! I love that you included the 555 IC option.

i was wondering why my servo was freaking out and now im thinking how it didnt burn out cause i was using it on 9 volts so it was just continuously spinning ty for the vid

🇳🇱🤪🤪🤪👍👍👍

You could have just token all of the electronics except the motor, and solder wires to the positive and negative.

Ah yes... those intros back in the day 👌🏻

Fabulous content, thank you very much. My only concern now is that I can see an awful lot of my time disappearing into watching your videos :)

When you want to learn something, let's open it :D