S13: Solar Panel Tracker - Revision history

Preet: /* Project Source Code */

2013-05-23T21:56:55Z

‎Project Source Code

Preet: /* Grading Criteria */

2013-05-23T21:44:39Z

‎Grading Criteria

Matt s13: /* Pulse Width Modulation */

2013-05-23T20:05:04Z

‎Pulse Width Modulation

Matt s13: /* Conclusion */

2013-05-23T19:59:22Z

‎Conclusion

Matt s13: /* Implementation */

2013-05-23T19:36:09Z

‎Implementation

Matt s13: /* Project Video */

2013-05-23T05:22:41Z

‎Project Video

Matt s13: /* Design & Implementation */

2013-05-22T06:21:20Z

‎Design & Implementation

Matt s13: /* Design & Implementation */

2013-05-22T05:57:44Z

‎Design & Implementation

Matt s13: /* Design & Implementation */

2013-05-22T05:47:45Z

‎Design & Implementation

Matt s13: /* Project Title */

2013-05-22T05:30:31Z

‎Project Title

@@ Line 314: / Line 314: @@
 === Project Source Code ===
-Send me your zipped source code and I will upload this to SourceForge and link it for you.
+*  [https://sourceforge.net/projects/sjsus13/files/ Project source code is available at SourceForge]
 == References ==

← Older revision		Revision as of 21:44, 23 May 2013
Line 1:		Line 1:
−	~~=== Grading Criteria ===~~
−	~~<font color="green">~~
−	* How well is Software & Hardware Design described?
−	* How well can this report be used to reproduce this project?
−	* Code Quality
−	* Overall Report Quality:
−	** Software Block Diagrams
−	** Hardware Block Diagrams
−	**: Schematic Quality
−	** Quality of technical challenges and solutions adopted.
−	~~</font>~~
−
	== Solar Panel Tracker ==		== Solar Panel Tracker ==

@@ Line 255: / Line 255: @@
 ==== Pulse Width Modulation ====
-PWM, or Pulse Width Modulation, was used to control the two 180 degree positional servos.  The servos required a 50 Hz (20 ms) duty cycle, and the duration of the high duty cycle (in milliseconds) would control the position to move to.  Typically, the valid high duty cycles are between 1.0 and 2.0 milliseconds, with 1.0 representing '0 degrees', 1.5 representing '90 degrees' and 2.0 representing '180 degrees.'  However, we found that the valid duty cycle range was larger, ranging from [INSERT FULL RANGE].  Knowing this, we expanded the range of the duty cycle and converted the range into a degree range with the <i>change_direction_with_Degree()</i> function.  The servos were connected to a 5V power supply and were controlled by PWM1-4(P1.23)and PWM1-5(P1.24).
+PWM, or Pulse Width Modulation, was used to control the two 180 degree positional servos.  The servos required a 50 Hz (20 ms) duty cycle, and the duration of the high duty cycle (in milliseconds) would control the position to move to.  Typically, the valid high duty cycles are between 1.0 and 2.0 milliseconds, with 1.0 representing '0 degrees', 1.5 representing '90 degrees' and 2.0 representing '180 degrees.'  However, we found that the valid duty cycle range was larger, ranging from 0.2 ms to 3.3 ms.  Knowing this, we expanded the range of the duty cycle and converted the range into a degree range with the <i>change_direction_with_Degree()</i> function.  The servos were connected to a 5V power supply and were controlled by PWM1-4(P1.23)and PWM1-5(P1.24).
 [[File:146ServoPWM.png|center|frame]]

@@ Line 319: / Line 319: @@
 == Conclusion ==
-Conclude your project here.  You can recap your testing and problems.  You should address the "so what" part here to indicate what you ultimately learnt from this project.  How has this project increased your knowledge?
 === Project Video ===

← Older revision		Revision as of 19:36, 23 May 2013
Line 275:		Line 275:

	=== Implementation ===		=== Implementation ===
−	This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.

	[[File:CmpE146_S13_SPT_SjOneIO.png\|center\|frame]]		[[File:CmpE146_S13_SPT_SjOneIO.png\|center\|frame]]

@@ Line 323: / Line 323: @@
 === Project Video ===
-Upload a video of your project and post the link here.
+[http://youtu.be/hmtO0O_00to Demonstration Video]<BR/>
 === Project Source Code ===

@@ Line 201: / Line 201: @@
 == Design & Implementation ==
 === Hardware Design ===
@@ Line 214: / Line 216: @@
 [[File:CmpE146_S13_SPT_LightSensorConnection.png|center|frame]]
-<div style="text-align: center;">'''Figure 1:''' LightSensorConnection </div>
+<div style="text-align: center;">'''Figure 2:''' LightSensorConnection </div>
@@ Line 225: / Line 227: @@
 [[File:CmpE146_S13_SPT_SJOneBoardSchematic.png|center|frame]]
-<div style="text-align: center;">'''Figure 2:''' SjOne Board Schematic </div>
+<div style="text-align: center;">'''Figure 3:''' SjOne Board Schematic </div>
 === Hardware Interface ===
 [[File:CmpE146_S13_SPT_SjOneInterface.png|center|frame]]
-<div style="text-align: center;">'''Figure 3:''' SjOneInterface </div>
+<div style="text-align: center;">'''Figure 4:''' SjOneInterface </div>
 <table class = "wikitable">
 <th> SJSU Dev Board Pin</th> <th> Destination Pin</th><th>Description</th>
@@ Line 256: / Line 258: @@
 [[File:146ServoPWM.png|center|frame]]
-<div style="text-align: center;">'''Figure 4:''' PWM duty cycle example </div>
+<div style="text-align: center;">'''Figure 5:''' PWM duty cycle example </div>
 ==== Analog-to-Digital-Converter ====
@@ Line 266: / Line 268: @@
 [[File:CmpE146_S13_SPT_FreeRTOS.png|center|frame]]
-<div style="text-align: center;">'''Figure 5:''' FreeRTOS </div>
+<div style="text-align: center;">'''Figure 6:''' FreeRTOS </div>
 [[File:CmpE146_S13_SPT_SoftwareFlowchart.png|center|frame]]
-<div style="text-align: center;">'''Figure 6:''' Flowchart of the Software Design </div>
+<div style="text-align: center;">'''Figure 7:''' Flowchart of the Software Design </div>
 === Implementation ===
@@ Line 276: / Line 278: @@
 [[File:CmpE146_S13_SPT_SjOneIO.png|center|frame]]
-<div style="text-align: center;">'''Figure 7:''' Pins used for ADC and PWM </div>
+<div style="text-align: center;">'''Figure 8:''' Pins used for ADC and PWM </div>
 [[File:CmpE146_S13_SPT_SJOneBoardPWMblockDiagram.png|center|frame]]
-<div style="text-align: center;">'''Figure 8:''' PWM Match Register block diagram </div>
+<div style="text-align: center;">'''Figure 9:''' PWM Match Register block diagram </div>
 ==== Light sensor Logic ====
@@ Line 285: / Line 287: @@
 [[File:146getDirectionBaseCodeSnippet.png|center|frame]]
-<div style="text-align: center;">'''Figure 9:''' getDirection function </div>
+<div style="text-align: center;">'''Figure 10:''' getDirection function </div>
 ==== Servo motor Logic ====
 The <i>ServoMotors.cpp</i> file contains the <i>change_direction_withDegree()</i> function, which updates the PWM Match Register for the given PWM signal and the degree. This function takes the degree value, ensures that it is within range, then converts it into milliseconds so it can be written to the respective Match Register, using the <i>PWMUpdateMR()</i> function defined in the PWM driver file. We used the definitions <i>Max_degree</i>, <i>Servo_Width</i>, <i>Servo_Start</i>, and <i>freq_ms</i>, whose values may need to be changed if a different servo motor is used.  <i>Max_degree</i> is the farthest degree available to the servo motor (180), <i>freq_ms</i> is the duty cycle (20 ms), and the <i>Servo_Width</i> and <i>Servo_Start</i> are derived from the duty cycle thresholds (in ms) mapped to the degree range (0 - 180) of the servo motor.
 [[File:146changeDirectionCodeSnippet.png‎ |center|frame]]
-<div style="text-align: center;">'''Figure 10:''' change_direction_withDegree function </div>
+<div style="text-align: center;">'''Figure 11:''' change_direction_withDegree function </div>
 ==== Light-sensing Task ====
@@ Line 299: / Line 301: @@
 [[File:CmpE146_S13_SPT_ServoTask.png‎ |center|frame]]
-<div style="text-align: center;">'''Figure 11:''' Servo Task </div>
+<div style="text-align: center;">'''Figure 12:''' Servo Task </div>
 == Testing & Technical Challenges ==

@@ Line 200: / Line 200: @@
 == Design & Implementation ==
 === Hardware Design ===
 =====Structure Design=====
-The structure of the Solar Panel Tracker consists of a 'base' servo to rotate the solar cell to a position in a 180 degree arch, and a 'top' servo which tilts the 'arm' which holds the solar cell and a photoresistor circuit.  A second photoresistor circuit, used for the base direction logic, is located on top of the structure and angled in the same direction of the base rotational range.  The base servo rotates the structure using belts and pulleys which move the structure resting on an old computer fan bearing.  This provides for a smooth rotation.
+The structure of the Solar Panel Tracker consists of a 'base' servo to rotate the solar cell to a position in a 180 degree arch, and a 'top' servo which tilts the 'arm' which holds the solar cell and a photoresistor circuit.  A second photoresistor circuit, used for the base direction logic, is located on top of the structure and angled in the same direction of the base rotational range.  The base servo rotates the structure using servo belts and pulleys which move the structure resting on an old computer fan bearing.  This provides for a smooth rotation.
 =====Light Sensor=====
@@ Line 215: / Line 215: @@
 [[File:CmpE146_S13_SPT_LightSensorConnection.png|center|frame]]
 <div style="text-align: center;">'''Figure 1:''' LightSensorConnection </div>
@@ Line 253: / Line 252: @@
 </table>
-==== PWM ====
+==== Pulse Width Modulation ====
 PWM, or Pulse Width Modulation, was used to control the two 180 degree positional servos.  The servos required a 50 Hz (20 ms) duty cycle, and the duration of the high duty cycle (in milliseconds) would control the position to move to.  Typically, the valid high duty cycles are between 1.0 and 2.0 milliseconds, with 1.0 representing '0 degrees', 1.5 representing '90 degrees' and 2.0 representing '180 degrees.'  However, we found that the valid duty cycle range was larger, ranging from [INSERT FULL RANGE].  Knowing this, we expanded the range of the duty cycle and converted the range into a degree range with the <i>change_direction_with_Degree()</i> function.  The servos were connected to a 5V power supply and were controlled by PWM1-4(P1.23)and PWM1-5(P1.24).
 [[File:146ServoPWM.png|center|frame]]
-==== ADC ====
+==== Analog-to-Digital-Converter ====
 === Software Design ===

@@ Line 11: / Line 11: @@
 </font>
-== Project Title ==
+== Solar Panel Tracker ==
 == Abstract ==