S21: exFAT - Revision history

Proj user9: /* Team Members & Responsibilities */

2021-06-01T21:12:57Z

‎Team Members & Responsibilities

Proj user9: /* Team Members & Responsibilities */

2021-06-01T21:12:15Z

‎Team Members & Responsibilities

Proj user9: /* Team Members & Responsibilities */

2021-06-01T21:11:30Z

‎Team Members & Responsibilities

Proj user9: /* Team Members & Responsibilities */

2021-06-01T21:11:12Z

‎Team Members & Responsibilities

Proj user11 at 05:44, 29 May 2021

2021-05-29T05:44:52Z

Proj user11 at 05:43, 29 May 2021

2021-05-29T05:43:23Z

Proj user9: /* Hardware Design */

2021-05-29T05:25:22Z

‎Hardware Design

Proj user9: /* Hardware Design */

2021-05-29T05:23:24Z

‎Hardware Design

Proj user9: /* Hardware Design */

2021-05-29T05:23:12Z

‎Hardware Design

Proj user9: /* Hardware Design */

2021-05-29T05:22:34Z

‎Hardware Design

@@ Line 47: / Line 47: @@
 ** LCD: [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/Geo_Controller Suryanto Phienanda]
-* Communication Bridge Controller
+* Communication Bridge Controller & Web Application
 ** [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/bridge Tyler Tran]
 <BR/>

@@ Line 50: / Line 50: @@
 ** [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/bridge Tyler Tran]
 ** [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/bridge David Tang]
 * Web Application

@@ Line 44: / Line 44: @@
 * Driver/Master Controller & LCD
-** Driver: All of us, LCD: [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/Geo_Controller Suryanto Phienanda]
+** Driver: All of us
 * Communication Bridge Controller

@@ Line 44: / Line 44: @@
 * Driver/Master Controller & LCD
-** All of us
+** Driver: All of us, LCD: [https://gitlab.com/exfat-cmpe243/sjtwo-c/-/tree/Geo_Controller Suryanto Phienanda]
 * Communication Bridge Controller

@@ Line 1: / Line 1: @@
-[[File:exFCatlogo.png|400 px]]
+[[File:exFCatlogo.png|right|400 px]]
 == Abstract ==
 As the capstone project for this class, we designed, prototyped, implemented, and tested an autonomous RC car. Our RC car platform of choice was built by Traxxas as it has a great reputation for building durable RC chassis. On this chassis, we mounted ultrasonic sensors to detect objects surrounding the car and allow it to steer clear of them, a GPS and compass unit that can output important GPS coordinates and heading, a bluetooth module that communicated these location and orientation data to the SJ2 boards, a pair of optical encoders that can detect the car's speed and direction of acceleration, and an LCD screen that provides some important real-time metrics for our debugging purposes. In addition to this debugging method, we also used the provided PCAN dongle to observe CANBus readings and confirm that we were seeing expected values transmitted. Finally, our development of the project was test-driven, using unit tests to confirm the functionality of some code prior to its usage on the car. The rest of this report will detail more specifics about the methodology behind the development of each module.

← Older revision		Revision as of 05:43, 29 May 2021
Line 1:		Line 1:
		+	[[File:exFCatlogo.png\|400 px]]
	== Abstract ==		== Abstract ==
	As the capstone project for this class, we designed, prototyped, implemented, and tested an autonomous RC car. Our RC car platform of choice was built by Traxxas as it has a great reputation for building durable RC chassis. On this chassis, we mounted ultrasonic sensors to detect objects surrounding the car and allow it to steer clear of them, a GPS and compass unit that can output important GPS coordinates and heading, a bluetooth module that communicated these location and orientation data to the SJ2 boards, a pair of optical encoders that can detect the car's speed and direction of acceleration, and an LCD screen that provides some important real-time metrics for our debugging purposes. In addition to this debugging method, we also used the provided PCAN dongle to observe CANBus readings and confirm that we were seeing expected values transmitted. Finally, our development of the project was test-driven, using unit tests to confirm the functionality of some code prior to its usage on the car. The rest of this report will detail more specifics about the methodology behind the development of each module.		As the capstone project for this class, we designed, prototyped, implemented, and tested an autonomous RC car. Our RC car platform of choice was built by Traxxas as it has a great reputation for building durable RC chassis. On this chassis, we mounted ultrasonic sensors to detect objects surrounding the car and allow it to steer clear of them, a GPS and compass unit that can output important GPS coordinates and heading, a bluetooth module that communicated these location and orientation data to the SJ2 boards, a pair of optical encoders that can detect the car's speed and direction of acceleration, and an LCD screen that provides some important real-time metrics for our debugging purposes. In addition to this debugging method, we also used the provided PCAN dongle to observe CANBus readings and confirm that we were seeing expected values transmitted. Finally, our development of the project was test-driven, using unit tests to confirm the functionality of some code prior to its usage on the car. The rest of this report will detail more specifics about the methodology behind the development of each module.

@@ Line 1,329: / Line 1,329: @@
 In order to write one pixel on the LCD, 3 bytes are required to be sent at each rising "write" edge clock. Each byte represents a color as shown in the figure below.<br>
-[[File:ExFAT WR Proto.png|600px|thumb|center|8-bit interface write protocol (source: https://www.waveshare.com/w/upload/7/78/ILI9486_Datasheet.pdf)]]<br><br>
+[[File:ExFAT WR Proto.png|525px|thumb|center|8-bit interface write protocol (source: https://www.waveshare.com/w/upload/7/78/ILI9486_Datasheet.pdf)]]<br><br>
 To better visualize the hardware design, a simple diagram of the connection between SJ2 board and the TFT LCD is provided below.<br>
-[[File:ExFAT_LCD_connection.png|600px|thumb|center|SJ2 - TFT LCD connection]]<br>
+[[File:ExFAT_LCD_connection.png|550px|thumb|center|SJ2 - TFT LCD connection]]<br>
 To make the TFT LCD work, an 8-bit parallel driver needs to be written.<br>

@@ Line 606: / Line 606: @@
 {|
 |[[File:Wheel_encoder_exfat.jpg|thumb|left|275px|A picture of the wheel encoder]]
-|[[File:Hall_effect.jpg|thumb|center|350px|The Traxxas Hall Effect sensor]]
+|[[File:Hall_effect.jpg|thumb|right|350px|The Traxxas Hall Effect sensor]]
 |}

@@ Line 605: / Line 605: @@
 To rectify this minor roadblock, we decided to switch to a set of optical wheel encoders. These would allow the same RPM detection as done by the Hall Effect sensor, but without the issue of the car detecting its own movement whilst at a standstill. Additionally, we were able to use a second wheel encoder in conjunction with the first so that we could also detect reverse motion.
 {|
-|[[File:Wheel_encoder_exfat.jpg|thumb|left|300px|A picture of the wheel encoder]]
+|[[File:Wheel_encoder_exfat.jpg|thumb|left|275px|A picture of the wheel encoder]]
 |[[File:Hall_effect.jpg|thumb|center|350px|The Traxxas Hall Effect sensor]]
 |}
@@ Line 612: / Line 612: @@
 With wheel RPM detection complete, we moved onto integrating wheel speed into the PWM duty cycle applied to the ESC. Our car came equipped with the XL-5 ESC from Traxxas, and it has a very narrow range of PWM values dictating forwards, backwards, and neutral movement.
-[[File:Xl5_esc.jpg|thumb|center|300 px|The XL-5 ESC]]
+[[File:Xl5_esc.jpg|thumb|center|275 px|The XL-5 ESC]]
 Since the XL-5 is intended to be controlled by a wireless transmitter, it doesn't have any documentation that helped us integrate with it using our SJ2 boards. So, through some experimentation, we were able to discern a few things about its behavior: