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In the previous lecture, we went through the schematic diagram of the circuit that makes up the terrorism

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controller.

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We walk through this schematic right here in this lecture.

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I'm going to show you how you can implement this circuit or breadboard in the next lecture.

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What are going to show you how to do the same on a PC?

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I have tested this circuit in the circuit on two breadboard.

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I started with the mini breadboard here and I used a 30 pin E.S.P 32 deficit and it looks like this.

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So the important components of the circuit are implemented on this small breadboard.

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So I've got the circuit that controls the pump, which is this one here, which is the circuit that

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you see right here.

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I'm using a potential murder to simulate the moisture sensor instead of using the actual moisture.

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Since I was trying to figure out how it all works and figure out thresholds and things like that, it

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was more convenient to use Consuegra instead of having to use the actual moisture sensor.

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And this is what actually worked really well for the basics.

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I was able to connect a motor right here using a screw terminal.

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It's like sitting right there and this motor simulates the water pump.

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I was able to move that consumer up and down and then trigger the operation of the motor or the motor

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simulation, and I was also able to work with an external power supply, which is this power supply

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here just for double a batteries with a switch.

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So we do like that in here so that the motor had its own power supply.

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There you go.

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It looked like this.

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Everything fit it really nice.

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There's no circuit, though, to allow me to check for the voltage of the the motor battery and that

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needed more space.

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It was not available in the mini breadboard.

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And therefore I decided to expand and move on to the larger breadboard or something like that and that

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and have a look at the larger breadboard.

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So with a larger breadboard ahead, more space.

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So it's a lot more comfortable to work with it.

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Zoom in so we can have a look at the details here.

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So having a look at the components you can see down here, I've got the two voltage devices, which

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are these two parts of the circuit.

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This voltage divided here is for the motor battery sensor is this one here?

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It takes a signal from the battery connector, which is this is what I would connect.

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The battery takes a signal here.

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It appropriately so that it puts it in a range of zero to three point three volts.

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And then I've got this this wire here takes the signal to be 34.

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Right there again is set in within the range of zero to three point three volts instead of seven to

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actually beat this power supply.

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It was meant to be

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six foot instead of six volts, which is beyond the capability of the SB 13 to read use of voltage divider

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to break it down to zero to three point three fourths.

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And the signal to set comes directly from the motor power supply, which is that this bottom power rail

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here, I'm taking it from these banana connectors, which I can connect all four to five battery power

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supply or to my benchtop power supply right there through the wires.

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Now, another interesting detail of this implementation here is instead of going for the regular thirty

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eight point thirty two or the thirty three to this one here, I decided to go for one of these.

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This is a regular E.S.P 32, but it contains a LAPO battery holder and of course, the necessary SEGERT

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plus a convenient on off switch.

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So I thought I would give this a go and try it out.

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And it actually worked quite well as it works exactly as a normal E.S.P 32 with a difference that it's

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got its own battery that can turn it on and the circuit will start working.

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So what I did here was that I got the voltage divided on which you can see here in the circuit, which

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takes a signal from a year or two or three.

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And that is what this white wire does.

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It goes over to the other side.

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Right here, which is Gibril 30 33.

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And then the input voltage that it measures comes from ground and the positive side of the battery.

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That's what this jumper wire is for, could not find a pin on the board itself to give me access to

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the voltage from the battery directly.

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So it just stuck a jumper wire in there and that worked quite well.

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Next up on this side of the Bridport is where we've got the controlling circuit for the motor, so there's

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the tape, 122 plus it's necessary trigger resistance that put down register.

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And we've got this short key diode and a capacitor for the noise.

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So you can see all that here are used a ceramic capacitor for the noise.

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And I also plugged in a bypass capacitor directly onto the radio because I was having initially problems

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with the motor causing a voltage drop that would cause the hospitality to Brown out.

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So the capacitor here helps a little like the Castlebar is not on this diagram.

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It's just something that are added separately.

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Let's see what else.

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I've got a little LCD here for the power.

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Let's use this LCD here.

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When power is applied, the energy gets on Stavisky.

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I have not implemented the other to indicate OLED.

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Those are available on the breadboard that are designed separately and finally for the humidities.

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And so I've got this board here, which is an look board.

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It contains a little amplifier here.

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And I'm taking the signal from analog from H0, the leftmost pin and convey that.

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A schematic.

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To 35 right there by this green wire, so I can just connect the moisture sensor on to the breakout.

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Like this and then connected or inserted into the soil.

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Now I start testing again just similarly to what I did with my mini breadboard.

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I was using a.

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But then show me that this is not properly connected, of course, I need to rearrange the power and

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ground wires, but I was using a potential method to help me figure out how the circuit and my flow

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on node read behaves depending on a variety of inputs from the sensor.

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That's how I was prototyping it when I got a sense of what is going on with the sensor and how it behaves.

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Then I continued with the use of the actual sensor in the terrorism itself.

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The circuit, which is so connected would look like this and to put in my Mogra.

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Which stimulates the pump and it would look like this.

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Later on, I also decided to add the DHT 22 cents, and that's what this group is about.

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You can see it right here on the schematic.

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This sensor looks like this.

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It's a the twenty two inside, just a regular DHT 22, but it's mounted in a larger casing, which you

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can use a bit of Velcro to stick on the inside of the terrarium, and therefore you can measure our

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temperature and humidity.

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So it also comes with a much longer Y, as you can see, sort of why is cable.

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So I would use that the screw terminal to connect power and the yellow one is the signal.

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So the signal goes in the middle, which is connected to the O2 25, according to the schematic.

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And that's about it, so she can she can use Bridport and a choice of E.S.P 32 defecates to implement

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this circuit is nothing special about it.

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In the next lecture, I'm going to walk you through the features of the PSP.