Reversing Polarity at Two Different Speeds

Someone asked me if I knew how to reverse polarity on a motor but have it move slower in one direction. This is what I came up with. I think I will expand from this and try to add speed control in both directions and auto reversing.
0:00 intro
0:34 building
0:52 motor wires
0:58 negative circuit
2:22 speed controller negative
3:33 switch
4:47 positive circuit
5:44 speed controller positive
5:55 power supply connected
6:19 demo
7:07 negative wiring explained
7:58 positive wiring explained
9:09 one direction explained
10:35 other direction explained
11:55 negative diagram
12:45 positive diagram
13:46 one direction diagram
14:15 other direction diagram
DC Motor Speed Controller Universal DC 12V 24V 10A Electronic Stepless Speed Regulator Switch for Car Truck Fan Heater Control a.co/d/bCAyjbA

[@AztecWarrior69]

OK so I had to watch most of this to get to the point where it made any sense. but the whole time I knew you were taking the very long way of doing this.
YOu DON'T need three relays. Just the two. It is SO SIMPLE.
All you have to do is
Wire relay A, 87a to straight negative and
Wire relay B, 87a to speed control out negative.
THAT'S IT.
When relay A is energized speed control is in effect since Positive is fed by relay A and the speed control negative is connected through relay B.
When relay B is energized it runs at full speed. Positive is flowing through relay B and regular Negative is connected through relay A straight to Negative.
In fact if you wire a second PWM speed controller to the other negative you can control speed both ways.
In any case this is still a good video. Having things mounted and not flailing all over the place makes for a better instructional video. Tip for these using bosch style relays. Mount strip of board perpendicular to your base board. Them mount the relays on that board with the pins facing up so you can see the connections being made.

[@mikmaster63]

As it says in my bio, I’m here to learn and share what I’ve learned…

[@mikmaster63]

any idea how to do this. i have a few ideas but nothing firm yet?
@FENIA3648
@FENIA3648
3 weeks ago
I watch your videos and I am impressed by the simplicity which you explain everything. Thank you very much for the knowledge you share with us.
Pressing the start switch starts the motor. By moving the magnet to the next point I would like the motor to stop (apparently receiving another command from another 4th relay). Then from the same source (4th relay or maybe a switch) to receive a command again to continue the motor working in the same direction until it finds the third magnet which will stop the motor again. I need to do this 5 times (5 magnets). I would greatly appreciate it if you could help me.

[@AztecWarrior69]

​@@mikmaster63 The simplest thing to do is use a micro controller. BUT we love our relays don't we. The trick is us use cascading latching relays. That is easy. Is the magnet being moved by YOU or whatever the motor is controlling? The hard part is the delay before it moves on. Easy to do with a few delay timers. Will cost round $50. To do it with just 1 Is going to be the challenge.
Does it need to be Bosch Style relays or can it be DPDT relays? What is this going in? How much room do you have? Does it have to be relays? If I make you a circuit board with 5 triggers, in simulation software can you put it together? How long it the delay?
To start I need to give you a link to a diagram for you to look over. It has the beginnings to do this. But I will need you to go to one of my videos and comment. That way I can put the link in the description. UA-cam keeps deleting my comment with external links.
It has a counter that can be changed out for a timer.
What it does is that
It starts at a HOME position
Passes position 1 (a micro switch)
Moves to Position 2
Reverses
Come Back to Position 1
Reverses
Peateats till counter reaches set count.
Then returns HOME.

[@mikmaster63]

@@AztecWarrior69 it’s not for me it was a question I got from someone. that’s what I’ve found too. Haven’t had time to figure it all out yet.

[@AztecWarrior69]

@@mikmaster63 Well so far the timer relay (Dual Mode 0.01S-99H Delay Timer Relay AH3-DM if you wanna look it up.) has two modes. A and B. It has two relays. Let's call the TR1(Timer Relay 1, the one that will turn on right away) and TR2(Timer Relay 2, the one that will turn on after set time)
On B Mode one of the relays turns on right away as soon a power is applied. The other relay will wait till till the set time has lapsed.
Using that time you will control another relay. Call that relay MR. That relay will have either the positive or negative side of the motor power. PINs 30 and 87a.
You will connect the trigger to the MR 86, to the TR1 (PIN 4 Normally Open)
On the timer, jumper PINs 1 & 8 The two commons
TR2 (PIN 5) wire to negative.
Timer Pin 7 wire to positive
Wire the first 4 reed switches Commons to ground.
And the N.O. to Timer PIN 2.
Now Each time the magnet reaches a read switch it will trigger the timer.
TR1 immediately turns on, triggering MR.
MR is triggered and motor is turned off.
Once the timer reaches set time, TR2 turns on, disconnecting the power from MR
Motor moves on to the next reed switch.
From there it is whatever you need it to do. Stop, reveres .....
Now this is untested with reed switches. I can not guarantee that it won't retrigger before the magnet passes. Or gets triggered too soon.
Hope this made sense.