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Hey, in this lecture, want to do a quick recap of what we have implemented in this section of the

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project and then talk a little bit about what we are going to be doing in the next section of the bridge,

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the next iteration of our prototyping process.

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So what we have implemented is the terrorism controller hardware or the circuit on a breadboard, which

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includes the motor, the motor control circuitry and the potential motor which simulates the soil humidity

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sensor, taking external power from the benchtop power supply for the motor specifically.

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And then there to be 30 plus.

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It's potentially powered by USB at the moment.

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On the software side, we've implemented the first iteration of the terrorism controller, ESP 32 sketch,

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which simply takes readings from the potential mirror and publishes them to a appropriate social committee.

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The topic of the and Braco right here.

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This is a topic.

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And then the sketch is subscribed to the control topic so that it can use information stored there were

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sent there from the note read flow to turn the motor on and off.

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In terms of the flow itself, we've implemented a simple user interface which looks like this.

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We can manually control the pump from the switch or via the potential motor.

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And test that that it works and the flu itself is fairly simple, as you can see, we've got one subscriber

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to the soil humidity topic using the immunity in node.

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And then we've got a simple calculation happening here, a comparison to determine whether the pump

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should be on or off.

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And then we use the R, b, e node to throw messages that are going to the hospital to and finally,

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whatever the state of the pump is calculated to be, we publishing it to this.

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Topic here on the kitty mosquito, Brooke, a very sad thought on the scene, frustrated point, what

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we are going to do in the next iteration of this project to add these two circuit components, which

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are two voltage devices which allow us to measure the voltages or for the motor and for the motor control

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unity SB 32 and will publish this information to the Broca as well so that we can see these voltages

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in our red dashboard.

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And this is something that is useful to do if you decide to use battery power for your project and therefore

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you'll be able to monitor the battery power levels and know when to change or recharge the batteries.

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It's also an interesting thing to do anyway, I think, because it allows us to see how easy it is to

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implement features like that that do require some back and forth communication between the two parts

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of our controller.

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So let's move on to the next picture and implement the voltage sensing circuits and the necessary changes

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to the script and to the new Drechsler.