My Name is Ahmad Shamshiri and I am presenting this tutorial from Canada
Hi, welcome to Robojax. in this video I'm going to introduce this w1209
temperature control module. This is one of the best and easy to use
module that you can get. It doesn't need anything else like Arduino or anything
it has a temperature sensor so you can connect it here and it's about 50
centimeter so you can control a temperature and the temperature is shown
in real-time and it works with 12 volts so ground on 12 and then you can connect
your AC load whatever you have let's say a heater a fan or any other device that
you want to control with the temperature so one way to use this one is that you
are setting your temperature the desired temperature at let's say 58 degrees
Celsius and the current room temperature is 20 or 30 whatever is the liquid that
you are measuring so when the temperature reaches at 58 the relay will
turn on and will connect your fan and the fan will blow until the temperature
reaches back to lower than desired value and it will keep the fan
off again so the other way would be to put it the opposite for example you have
a heater and you want to keep something warm to 58 and not more than that
so, in that case this will keep the load on until it reaches to that
temperature that you are looking for let's say 58 we need to reach is 58
degrees it will turn this off and disconnect the load (from power) for you so this can be
said very easily we have three buttons here: that's the Negatively, Positive and Set
now I've connected it to 12 volts DC so the temperature that is currently
showing is the room temperature and if you disconnect the sensor from the device
you will get LLL so it that also helps you to know that
the sensor is disconnected if you're using longer wire. Now to set certain
temperatures Press this it's blinking now you can go up and down with
us when we press it harder so let's say you want to set it at 80 degrees so just
leave it it and returns back so that is the temperature that you're setting a simple
as that. I'm going to connect an AC (or DC) load here to turn the AC load on and off
with this one and after that I will explain some other features of this for
different purpose let me explain the AC bulb here so this is a table light that
is connected to the wall outlet and then the wire goes and will be turned on but
I have disconnected one of these two wires here
so let me show you so I've just cut this wire from here now this can be connected
to the relay. The relay's job is to just connect it so it will be ON and
disconnect it will be off I've just twisted them and then put some solder so
this can be inserted into a (relay) connector with a screw to correct your load you
will connect the two wires in here so doesn't matter which one is which so we
just connect the two wires that you're coming so in my case I'm gonna click
this here
now the AC load is connected and there is power going for the bulb
bulb so I'm just putting it aside so you can see it so I'm using the heat gun (from Canadian Tire store) to
heat this up and the sensor is here. As you saw to check the
temperature that you that you have set just press this button and that's 80
degrees okay so it just disappears now I'm heating this up and just pay
attention at 80 degrees that bulb will turn on
okay so it just went even 88 so it stays on until the temperature reaches back to
around 80 and at 80 it will turn OFF
so pay attention at what temperature it goes off it should be a 77
okay.
Now using it in reversed where the load is ON but goes OFF when it reaches your desired temperature. Will be explained.
to keep it on I reaches that temperature it will go off
so let's see it was 80 degrees and now I'm applying some temperature so you can
see that it will go off
you see at 80 it went off because we use it in the opposite way
when we set it to heat
this has another feature that you can set this up when the temperature goes
down it does not react immediately so you can set let's say two degrees or
three degrees or they call it a backlash so backlash temperature is the amount of
temperature that you set when it goes down it should go just below that
temperature then turn off so you can set the at zero or up to fifteen degrees I set
this at three degrees which I'm going to show you so let's have a look at the
specification of this one they say that the temperatures that it can control is
from -50 to 110 degrees Celsius the resolution is from
minus 9 to 99 at 0.1 degree Celsius so above this temperature it might be a
little different but will be between these two ranges 0.1 degrees which is
good. The resolution at all temperature is 1 degree so above this it will just
jump at 1 you will not see that say 105 point something so it goes from 105
to 106. The major accuracy is 0.1 this is
the same thing as a resolution the control accuracy is 0.1 so
you can set exact temperature of 0.1 degrees Celsius refresh it is zero point
five seconds (0.5) so in one second it measures twice so the input voltage
is 12 volts which is a very common voltage that's nice
measuring input: so that is the probe that they use and with zero 0.5%
accuracy and then waterproof sensor is 50 so waterproof so that you
can submerge this into the liquid or water and then one channel at 10 ampere
so this is very important that you cannot put heavy load through this and
in static (not active) it will consume 35mA and when
turned on it's less than 65mA. It has some other features
some code that will show down the screen it shows P0, P1, P2, P3.. up to 5 so I'll let's
have a look at this one this is setting P0 heat and cold so let's say you want
to set this that a normal operation you will set it such that when the
temperature reaches a certain value the fan will start working so this is one
way the relay will be disengaged the connection will not be established the
other way would be that initially this will be on like a heater and when
it reaches certain temperature the heater will shut off so this will be
disconnected so let's set that one hold this button for more than a few seconds
like 4 or 5 seconds and you will see that P on the screen so now it's P when
it goes to P then you can press this short that's cold and then you can
change it heat or cold so now pay attention when I set it to heat and exit
the light will go on now it when it exits just wait so by default as if this
is our heater and I want to keep it on and when it reaches that temperature it
will go off so let's see it was 80 degrees and now I'm applying some
temperature so you can see that it will go off
you see at 80 it went off because it's because we use it in the opposite way
when we said it to heat
so they see it
if so let me change that P back to cold so hold it and wait P0 hit and then
change it to cold and exit wait for this so it will change so now it's changed
now let's say the P1 the backlash as they call it to hold us so press now
again sorry press this plus button so P 1 now with
your P 1 go and set it so it's 3 degrees so you can set it exactly at 0 or 3 or 4
or whatever you want so you cannot say that 0 it can be set as 0.1 which is
degree so now let's set the upper limit P 2 so
hold this again when you see P go 1, 2 and then press set it so the upper limit
is 90 degrees so you can change it whatever you want P 3 so the lower limit
so now I'm going to the P 3 the lower limit so that is 30 so let's say you
don't want to go below 30 so it will be always showing 30 and now again let's
see that for the correction P4 when you are in P4 that
collection is now zero or you can say minus or plus some value and exit now
press P5 that is a delay when it when it's turned ON you can set it. here it's
all set at 0 but you can set it at that's it
that this is in minutes so six minutes after the change happen it can react but
let's make it zero so it can react immediately and then sex that's the
alarm so when you said I don't go here the alarm is now off if you set the
alarm on it will give you
the temperature for that alaram. Now it's set at 66 so when it reaches at 66
you will see the alarm so let me turn that on there will be a three dash on
the screen
So that is a trigger of alarm it will not allow that really or anything to
work if you set the alarm value and this will go back to normal when the
temperature reaches below 66 so if I hold this my body temperature will
reduce it oh it's hot yes this device is made very versatile the relay, the
contact if you look here on this side I've been soldered very well so really
you can when you connect it you know that this will not rip this connector
off so it's very nicely done also we have four screws if you are
mounted on somewhere the only worry is that there's a switch or such that if
you want to cover it you need another mechanism to make sure that you are able
to touch and make adjustments so these are not in a good position but it's very
cheap you can get this from eBay or Aliexpress and can do the job perfectly.
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