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arduino in this video we will learn how to
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work with a nemo 17 stepper motor in
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my case the oven model with 8401 such
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motors are mainly used on
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different chupa machines such as 3d printers
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laser engraver and so on and
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we work with this stepper motor We’ll go through the
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and 49 88 of course in the program and let’s
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but I think there’s
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no need to talk too much about what stepper motors are, in principle,
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everyone knows very well about it that it’s a
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motor that can rotate a
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certain number of steps and is valued
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for its accuracy positioning of the shaft and
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also on this stepper motor you can
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make the most accurate
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positioning of the shaft by
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crushing the steps into micro steps, one step
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can be divided into
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either half into one half or into 4
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parts into one quarter into eight parts one
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eighth and the maximum last
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option is one step into 16 parts 1 16 in
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this video we will also learn how to do this, the
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stepper motor itself
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has two windings and therefore in this
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case nani mo 17 the motor has 4
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connection contacts, two from one winding and two from
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the other, now the most important thing we
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need is to figure out the driver
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stepper motor a 49 88 the name of
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this driver as you can guess is
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that it is made on a 49 88 microcircuit its
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characteristics power supply to stepper
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motors from eight to thirty-five
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volts supply voltage to the logic itself
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this means the microcircuit itself from 3
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to 5 5 volts there is protection against
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maximum current without cooling the
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1 ampere with a radiator on the microcircuit da2
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amperes the size of the driver itself is very
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miniature 20 by 15 millimeters well,
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now let's look at the pinout of the driver
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the driver has 16
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connection pins at first glance it seems oh
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how complicated but in fact everything is quite
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it’s easy and now you’ll see for yourself in
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this diagram you can clearly see how and
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what is connected where, let’s start with the contacts
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they have with the 1st s2 and s3, just these three
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contacts are needed for that very splitting of the
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step, we won’t even connect them
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anywhere a little later Let's deal with them
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in general, we dropped 3 contacts, there are
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already less left, we move on to the
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4 contacts, these are 4 contacts for connecting the
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stepper motor, the diagram shows that
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one winding of the stepper motor is connected
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to contacts 2 b2 and the second
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winding is connected to contacts 1a and 1b, we
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also dropped 4 contacts
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already left much smaller further
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contact and nable the same as the input on the
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blocks n that is, this contact turns on the
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driver by default when this
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pin is 0 that is, nothing is connected
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the driver is turned on as soon as we supply
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5 volts the driver turns off
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so we don’t have this contact either we will
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also connect it anywhere for now, we
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exclude it, we have even fewer
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contacts, we go to these two
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contacts reset if only I think the name of
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these contacts is also known to you
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recess means reset slip is a sleep
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mode if the slip pin is pulled to a
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low level, that is, the
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driver will come to the ground as a sleeper mode, we
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are not going to use reset and sleep mode yet and for the
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driver to work they need to be connected to each other
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as shown in the diagram, we
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only have six connection contacts and 4 of
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them are power contacts, the upper
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contacts on the right side are
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motor power, as already said
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from eight up to thirty-five volts and also
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what you need to remember about powering
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the motor, you definitely need to install a
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smoothing capacitor of at least
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100 microfarats, the driver really doesn’t like
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voltage surges and therefore we
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definitely put a capacitor on the power supply to the motor, so
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you need to remember about this when connecting
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from below on this In the same country, we
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have contacts for connecting the
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logic, that is, we power the logic chip itself
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from 3 to 5 5 volts.
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In this case, we will take the power from the
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arduino and we have the most necessary
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which we will control the
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stepper motor via arduino, this is the
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step and contact der
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contact der we control the reverse
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rotation, that is, when on this contact
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motor rotates in one direction when on
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this contact 0 the motor rotates in the
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other direction and with the help of the step contact
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we control the steps of the motor with
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each positive pulse the
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motor takes one step, well or
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one micro step, if we broke one step
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into micro steps, in other words, with an impulse
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on the stop contact, the engine
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makes a movement, if we apply units to the step contact
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quickly, quickly, then the movement of the engine
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will already turn into rotation, I think
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with connection and control with the engine
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everything is clear and from the acquired knowledge
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let's go to the program and fal proc
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since in the fal proc program there is no block
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for the stepper motor driver a 49 88
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but we know by what principle it
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works and through the program and fal proc
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we need to control
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only two contacts this
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step contacts and der contacts, let's first
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create inputs and outputs in the fairy proc program,
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we've already prepared them in advance, which
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means we'll need one input, a button, a
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second input, analog to a resistor, a button,
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we'll make anti-bounce protection and a
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pull-up resistor, then the outputs,
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just let me sign it here to make it
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clear what is the pin on the driver the steps
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are we have step and reverse we have contact
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der as you can see we are working with the
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program version and the proc file 7.3.0
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and here the buttons are located a little
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differently now the confirmation button okay
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we don’t have at the bottom but here in the upper
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left corner Here’s a checkmark: now we
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pull out the input button on the board and
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pull out the reverse output, immediately connect them to
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each other, put them on the button, put
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pull-up resistor on the buttons, now we have
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ready the circuits for controlling the reverse, that
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is, in which direction
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our motor will spin, we feed it at using the button
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on the pin der one, the engine spins
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in one direction,
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remove the one on the contact der, we have
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zero and the motors begin to
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rotate in the other direction, now we
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pull out the step output onto the board,
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that is, the steps now we need
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to contact the step driver which we
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will have connected to on the third pin, the
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der contact, as you can see, is connected to the
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second pin, now we need to
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send pulses to the step driver contact, go to the
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block tree in the timers tab and
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pull out the generator from here, go to the
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generator and set the generator to set the
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symmetrical multivibrator
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and purity, let's say we set it to one
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click Makey on We set the generator input to
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inversion so that it works constantly and
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connect the generator through the two-step contact output.
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Now we have assembled the
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simplest circuit with which we
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can control the engine reverse and
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our engine will rotate with a
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frequency of one millisecond. Now
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we connect all the contacts
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as I showed. in the picture and the outputs of the
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step cores we connect the step to the third pin of
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the arduino dirk to the second pin of the arduino and from the arduino we
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also power the driver logic and
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check what we got and so we have everything
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ready for demonstration for now don’t pay
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attention to the variable resistor and display
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we will need them for the
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next demonstrations, we have already
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loaded arduino and here we see three
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unconnected wires,
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these are exactly the same contacts ms-1 with
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2m s3 for crushing the step,
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how to split the step, I will also
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show you now, so we supply power to the stepper
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motor and see the stepper motor
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everything is rotating as planned according to the
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check the reverse, the
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reverse also works fine, so as
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for the splitting of the step,
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now our engine is running at
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full steps and we know that for one
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revolution of the engine we need 200 steps,
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so for now I’ll turn it off, see if
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we have 200 steps for a full revolution
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then when we divide one step in half, then
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we already have a full revolution of
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the pulley, we get 400 steps, when we divide the
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step into 4 parts, it’s already 800 into eight parts,
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already 1600 and into 16 parts, 3200 steps, one
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revolution of the pulley
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with crushed steps, of course the engine
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runs much softer,
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let’s look at another we have a sign
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for splitting the step, as they said worse,
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there are three contacts and a mass of 1m s2 and s3
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now we look at the full step, all 3
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with them and are not connected 0 and in order for
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us to split the step in half we need
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ms-1 to be connected to the unit they are s2 and s3 not
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connected, let's try,
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here we have contact ms-1, I connect it,
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we see that our engine has begun
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to rotate slower since the number of
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steps per revolution has increased,
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let's further look at the sign to
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split the step into four parts, we need to
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connect only contact
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ms2, disconnect ms-1 and we connect it, we
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attract it to the unit, that is,
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we connect it to the pole to drink 5 volts and we see
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that the engine began to rotate even
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slower than when splitting the step into two, we
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look further to divide the step into 8
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parts, we need to connect
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them s1 and s2, at the moment we have ms2
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connected, we connect
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on the plus 5 volt contacts with 1 we see the
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engine began to spin even slower
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but with this movement it is smoother and we see
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the largest crushing of one
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step into 16 parts, all three contacts are
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pulled up to a high level, that is, we connect all
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to the power supply plus 5 volts
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we connect contact ms-3 and we see that
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our motor has begun to spin very
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slowly because for one revolution
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we now need three thousand two hundred steps
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guys, at the moment there is only
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one problem with the working of the stepper
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motor in the program and the purpose of the use is that the
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pulse generator is only useful for future use
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software and the more programs we have,
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the larger our sketch, the more
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different modules are connected in it
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and the more programs, the
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slower it runs guys, no matter how hard
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you try to set the highest
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frequency on the generator block with a large
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program, that is, a large sketch, the
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program will be executed slower and
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we won’t be able to spin the motor as far as it has the ability
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because the impulse will be constantly
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slowed down as the program increases.
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In general, this nema 17 stepper motor
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develops up to 8 revolutions per second, this is its
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maximum capability, but here we’ll
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remove even thoughts and turn it on at
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full speed turned off wires
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or rather contact m, as you can
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see here there are no 8 revolutions per second
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but a maximum of 2.
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Well, I think we got basic knowledge in the
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next two parts of the stepper
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motor, we will collect a couple more examples of
00:14:03
controlling a stepper motor in the
00:14:06
links to the stepper motor and the driver
00:14:09
will be found, as always, in in the description under the
00:14:11
video, only about the engine,
00:14:13
I advise you to take it from this seller
00:14:15
because this seller is verified,
00:14:18
I can definitely recommend it to you, and
00:14:21
lately others have a
00:14:24
the quality leaves much to be desired, but for me,
00:14:27
everyone who liked the video, please like and
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subscribe to the channel don't
00:14:31
forget to click on the bell bye everyone
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