Build10
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School
University of Florida *
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Course
3003
Subject
Electrical Engineering
Date
Apr 3, 2024
Type
Pages
2
Uploaded by KidArt5006
EEL 3003 Arduino Build 10 Name: Aleksandr Mnatsakanyan UF-ID Number: 28902886 Build circuit 10 (100%)
1.
Read pages 102-112 in the Arduino Projects Book. 2.
Build the circuit and watch lecture video "Arduino Build 10
”
. Important Note for ELEGOO Kit: Please be aware that a battery snap, as shown in the video, is not included in this kit. You have two options: obtain a 9v battery snap separately or utilize the Breadboard Power Supply provided in this kit. Detailed instructions on how to use the Breadboard Power Supply can be found on pages 136-138 in the ELEGOO Manual. 3.
(30%) Record a video of the working circuit that demonstrates of all of its functions. As you demonstrate the circuit, refer to the flowchart that you create in part 4 and explain how it works. As you demonstrate each function, show the part of the flowchart that the code is currently executing. Make sure your UF ID is in the video. 4.
(20%) Create a flowchart of the code using a software platform. I recommend Lucidchart
. Handwritten flowcharts will not be accepted. 5.
Please provide a short two or three sentence for each question. You may have to do some research on your own. This build introduces a potentiometer, a DC motor, and the integrated circuit. a.
(5%) Describe a potentiometer (what are the pins and how it will be used in this build) The pins are ground, 5V pin and the analog input to control the speed of the motor b.
(5%) What is the purpose of the switches in this circuit? First switch is to turn the motor on and off, the second one is to switch the direction of the motor c.
(5%) How are the 10k
Ω
resistors called in this circuit and what is their role? A pull-down resistor pulls the voltage down to the "low" logical level (0V or close to it) when the is no signal driving the input.
d.
(5%) How does a DC motor work? When electricity passes through the coil that is located inside a permanent magnet ring, a magnetic field is created. That magnetic field creates a torque which turns the DC motor. e.
(10%) Sketch an H-bridge showing the path of the current for both the CW and CCW direction of the motor. (The schematic showing the inside was shown in the pre-recorded lecture video. You MUST use that schematic.) f.
(5%) What is an integrated circuit (IC)? Integrated circuits are components that have large and complex circuits inside them, they come in a small size and have the needed outputs to control those circuits within. g.
(5%) Describe how the motor’s speed is controlled.
Include the roles of the potentiometer, the Arduino, and the motor controller (IC). As soon as the loop function starts Arduino reads the Analog value output from the potentiometer and sends a PWM signal to the motor controller with a corresponding pulse length. 6.
(10%) Describe your observations (challenges, thought process, anything interesting that occurred, etc.) during your building and testing of Circuit 10. When building this circuit, I noticed that with low potentiometer values the circuit start functioning abrupt and unstable. Also while testing the system, I noticed a slight buzzing sound from inside the motor, I don’t
know what causes this sound but it does not seem to affect the system.
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