Turning on & off a motor using PWM from a remote control.
Turning on & off a motor using PWM from a remote control.
(OP)
Hi, I am trying to get my 24V(70W) motor turn on and off using my remote controller.
This remote controller puts out PWM from its receiver so I want to be able to control on & off action of my motor using a remote control.
Is there a simple tutorial or circuit to follow?
Thank you.
This remote controller puts out PWM from its receiver so I want to be able to control on & off action of my motor using a remote control.
Is there a simple tutorial or circuit to follow?
Thank you.
RE: Turning on & off a motor using PWM from a remote control.
Be specific. Manufacturer, model number, link to specifications, etc. "24 volts" ... AC? DC?
As an aside, PWM usually isn't used to turn things completely on or off, it's normally for varying the supplied power in order to vary speed/brightness/heat output etc. But it has to be the right type of device being controlled to avoid having the magic smoke come out. An AC motor isn't going to be happy about being fed PWM.
RE: Turning on & off a motor using PWM from a remote control.
I'm sorry. I forgot to post the link of my remote controllers.
I have two remote controls.
DS600 (Single Hand Control)
https://www.youtube.com/watch?v=92nhXXWZ1RM
HT-8A (Both Hands Control)
https://www.youtube.com/watch?v=DCF2XxW18Ck&t=...
Since my motor is operated on 24VDC, I should supply 24VDC but how should I arrange a circuit to on and off my motor using PWM from the rc receiver?
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
TTFN (ta ta for now)
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RE: Turning on & off a motor using PWM from a remote control.
Remote controller alone can not power the motor so I came up with a circuit using TIP102 transistor and 1N4001 diode.
Could you review my circuit and tell me whether it is workable?
RE: Turning on & off a motor using PWM from a remote control.
Explanation:
Since the PWM will never be 0% or 100% as long as the transmitter is on** and is multiplexed with the PWM of other channels it won't ever be fully on or fully off. Better put a huge heatsink on that transistor if it ever sees motor current - which looks like it might let the smoke out of the receiver, though with that large resistor not enough current will flow through the motor to make any difference.
R/C Motor controllers are cheap and take care of all these problems, though the 24V might be a problem. Most will allow the motor battery to power the receiver, eliminating the extra battery. As mentioned above a relay can turn the motor on and off.
The better home-built circuit is a 555 chip wired in a bistable configuration with the trigger set at some duration of the PWM pulse. The output of the chip can be set to run for longer than the refresh rate so it will effectively latch as long as a pulse of sufficient length comes along to refresh the state. As flexible as the 555 is a timing solution is possible. The output from the chip can then pull down an NPN transistor that in turn operates a relay to handle the 24V motor. See https://dronebotworkshop.com/555-timer/ for how to use the 555. There is a circuit shown in https://books.google.com/books?id=-sE7JVywygQC&... by Forrest Mims, page 158. (Mims Circuit Scrapbook V.II)
**I don't know what the spread spectrum channel hopping digital systems do - in the old analog ones the pulses out of the receiver were initiated on a one-for-one basis in the transmitter. When the transmitter was off there would be no pulse train for the receiver and the servos would have no pulse to match an error feedback against. Maybe the receivers now just maintain the pulse train they were last commanded to do? The main thing is that the time between pulses can vary - but servos only care and can measure where they are during the duration of each pulse.
RE: Turning on & off a motor using PWM from a remote control.
Thank you very much for your insight.
I will try to test my motor using the battleswitch as you mentioned.
I think this thing is just what I need to trigger the on and off function of my motor.
My 24VDC motor is a linear motor like this.
I need to be able to control the clock & counter clockwise motion of this motor so that I can have open and close function of my door.
Could you tell me how to set up this mechanism using battleswitch?
RE: Turning on & off a motor using PWM from a remote control.
Normally there will be a forward relay and a reverse relay, and limit switches to break the forward control circuit before it hits the forward mechanical limit and break the reverse control circuit before it hits the reverse mechanical limit, and careful thought put into preventing something bad from happening if you try to energise forward and reverse at the same time.
RE: Turning on & off a motor using PWM from a remote control.
Good luck with the door.
RE: Turning on & off a motor using PWM from a remote control.
Yes, my linear actuator has built in end stop switches to limit its stroke.
The double pole and double throw mechanism is for remote control or for battleswitch?
I'm sorry for my lack of intelligence in electronics.
Could you please teach me in detail how to control the clock & counter clockwise motion of this motor so that I can have open and close function of my door?
RE: Turning on & off a motor using PWM from a remote control.
Well noted.
I appreciate it.
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
Thank you so much.
Could you advise me how to use that relay module with battleswitch?
I tried to draw some diagram of connect them by myself but I am really confused on how to connect these two modules together.
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
"NC" stands for "no connection" - it doesn't do anything and isn't to be connected to anything (why is it there, is another question that I don't have the answer to)
"SC" stands for "switch common". On the diagram on the right, see how the switch shown in the illustration has 3 terminals, the one on the bottom (on the drawing) being a terminal that is "common", i.e. it could be connected to either the terminal on the right for "rev" or the terminal on the left for "fwd"? That's the "common" terminal.
"S1" stands for "switch 1". Left terminal "fwd", or right terminal "rev" (as the case may be), on the diagram on the right.
"S2" stands for "switch 2". Right terminal "rev", or left terminal "fwd" (as the case may be), on the diagram on the right.
I am making a fair number of ASSumptions in writing this post. A multimeter, with your "battleswitch" in hand, will tell the tale whether my ASSumptions are right, or out to lunch.
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
RE: Turning on & off a motor using PWM from a remote control.
Thank you so much.
ok, I will test it by making connections like this.
RE: Turning on & off a motor using PWM from a remote control.
I have a bad feeling that the "battleswitch" does not have a neutral position, though. Make sure you are prepared for that.
RE: Turning on & off a motor using PWM from a remote control.
It will take a couple of weeks to get them since all the parts are not available in my country.
Thank you for helping me.
I appreciate it.