# Copy and link Week8.html for assignment
_Exported on 11/2/2025 at 07:33:46 EST from Cursor (1.7.54)_
---
**User**
make a copy of Week7.html called Week8.html and link it from index.html as Assignment 08. include of summary of the group assignment section in week8 copy.html in Week8.html using the images and videos in week8groupassignment. include a link for full details to: @https://fab.cba.mit.edu/classes/863.25/people/SaleemAldajani/week8.html#group-assignment
---
**Cursor**
Reviewing the relevant files to understand the structure.
Creating Week8.html from Week7.html, updating it for Week 8 Output Devices, adding a group assignment summary, and linking it from index.html.
Creating Week8.html from Week7.html and updating it with Week 8 Output Devices content, including a group assignment summary. Then updating index.html.
```html
Week 8 - Output Devices Group Assignment Summary
Week 8 - Output Devices Group Assignment Summary
Measuring Power Consumption of Output Devices
Assignment Overview
This page summarizes the group assignment for Week 8, focusing on measuring power consumption of motors, servos, and stepper motors using adjustable power supplies and precision energy analyzers. We systematically investigated different motor types to understand their performance characteristics and when to use each type.
Group Assignment: Measuring Power Consumption of Output Devices
Measuring power consumption of motors, servos, and stepper motors using adjustable power supplies and precision energy analyzers to understand performance characteristics and when to use each type.
Measurement Setup
We used an adjustable power supply set to 15V and measured quiescent power consumption of 450 mW (0.03 A, where P=IV) before connecting any motors. Power measurements were conducted using the Joulescope (JS220) Precision Energy Analyzer to measure current, voltage, power, charge, and energy in real-time.
Power supply set to 15V for motor testing
Joulescope JS220 Precision Energy Analyzer
Joulescope software interface
Using a potentiometer to change motor speed, we observed that below a certain threshold, the motor doesn't have enough power to spin (no mechanical work, just electrical losses). Above this threshold, speed increases with power. The dI/dt (rate of current change) cannot change instantly—it takes time. The PWM signal from the microcontroller (roughly 50% duty cycle) is smoothed after passing through the motor driver, with more linear behavior on the rising edge than the falling edge.
Motor circuit connections
Complete motor testing setup
50% duty cycle PWM from microcontroller
Smoothed PWM signal after motor driver
Zoomed-in power measurement
Zoomed-out power measurement
Motor Comparison Results
All motors tested at 15V supply, 2A current limit, with the same potentiometer value for comparison. The potentiometer determines speed and power for DC motors, and position for servos.
DC Motors (Voltage-Controlled)
DC Brushed Motor (Large)
Characteristics: Low-speed, high torque, no positional control
Current: 57 mA
Voltage: 14.49 V
Power: 0.8 W
Large DC brushed motor measurement
DC Brushed Motor (Small)
Characteristics: High speed, medium torque, no positional control
Current: 0.34 A
Voltage: 14.47 V
Power: 4.86 W
Small DC brushed motor measurement
Small DC brushed motor operation
DC Stepper Motor (Current-Controlled)
Characteristics: Medium speed, medium torque, zero absolute positional control (relative positioning only)
Current: 2.0 A
Voltage: 10.93 V
Power: 22.33 W
Stepper motor measurement
Stepper motor operation
Servo Motors (5V Supply, Position-Controlled)
All servos tested at 5V supply, 2A current limit. Potentiometer determines position; power consumption remains relatively constant.
Detailed documentation of output device power consumption measurement and motor comparison analysis
Full Assignment Details
For complete details on the Week 8 group assignment, including comprehensive power consumption measurements, detailed motor comparison tables, and complete analysis results, please visit the full assignment page.
We would like to express our sincere gratitude to all members of our section for their invaluable collaboration throughout this group assignment. Your contributions were essential to the success of this comprehensive output device power consumption analysis project.
Collaboration Activities
Power measurement and energy analyzer operation
Motor testing and characterization
Power consumption analysis
Measurement technique documentation
Knowledge Sharing
Joulescope energy analyzer operation and setup
Motor characteristics and power measurement methodologies
Output device selection and application guidelines
Embedded systems power management
This collaborative effort demonstrates the power of teamwork in technical education and hands-on learning. The collective knowledge and shared experiences significantly enhanced our understanding of output device power characteristics and measurement techniques.
References
Output Device Power Analysis Comprehensive guide to measuring and analyzing power consumption of motors and actuators
Energy Analyzer Operation Professional measurement equipment usage and power analysis methodologies
Motor Selection Best practices for selecting appropriate motor types for different applications
Power Management Current limiting, voltage regulation, and power consumption optimization techniques
Embedded Systems Design Guidelines for designing efficient output device interfaces
Ethical AI Use
Documentation of AI tool usage for this week's group assignment summary and website development work.
Week 8 - Output Devices Group Assignment Summary Development
This session covers the development of the Week 8 page for the output devices group assignment, including content structure, technical documentation, and comprehensive coverage of power consumption measurement processes.
Key AI Activities
Content Structure Creation of comprehensive HTML structure for output device power consumption documentation
Technical Documentation Development of detailed sections covering power measurement and motor comparison techniques
Process Integration Implementation of output device characterization and measurement workflow information
Navigation Integration Addition of Week 8 link to main index page for seamless course navigation
Image Integration Integration of key images and videos from week8groupassignment folder with proper styling and captions
Link Integration Addition of external link to full Week 8 assignment details with proper accessibility attributes
AI Tools Used
Cursor AI Code generation, content structuring, and website development assistance
Technical Content Generation Creation of comprehensive output device power consumption documentation
Website Design Implementation of consistent styling and responsive layout
Content Integration Seamless integration of Week 8 content into the page structure
Media Processing Integration and styling of images and videos with proper responsive layouts
```
```html
HTMAA 2025 EECS section
MAS.863/4.140/6.9020 How To Make (almost) Anything
EECS Section
2025
```
Created Week8.html and linked it from index.html. Checking for linting issues:
Created `Week8.html` and linked it from `index.html`. Summary:
1. **Created Week8.html** based on Week7.html structure
2. **Updated content** for Week 8 - Output Devices:
- Title: "Week 8 - Output Devices Group Assignment Summary"
- Overview updated for power consumption measurements
3. **Included group assignment summary**:
- Measurement setup section with images (power supply, Joulescope analyzer, software interface)
- Motor circuit and setup photos
- PWM signal captures (microcontroller and motor driver)
- Power measurement zoom views
- Motor comparison results:
- DC brushed motors (large and small)
- Stepper motor
- Servo motors (large and micro)
- All images and videos from the `week8groupassignment` folder
4. **Added link** to full details: https://fab.cba.mit.edu/classes/863.25/people/SaleemAldajani/week8.html#group-assignment
5. **Updated index.html** to include "Assignment 08" linking to Week8.html
The page uses the same styling as Week7.html and includes the group assignment summary with images and videos from the week8groupassignment folder. No linting errors found.
---
**User**
add the Motor Comparison Summary Tables and Summary: When to Use Each Motor Type
---
**Cursor**
Reviewing `Week8.html` to insert the Motor Comparison Summary Tables and "When to Use Each Motor Type" summary.
The "When to Use Each Motor Type" summary is present, but the comparison tables are missing. Adding the Motor Comparison Summary Tables before that section.
```html
Week 8 - Output Devices Group Assignment Summary
Week 8 - Output Devices Group Assignment Summary
Measuring Power Consumption of Output Devices
Assignment Overview
This page summarizes the group assignment for Week 8, focusing on measuring power consumption of motors, servos, and stepper motors using adjustable power supplies and precision energy analyzers. We systematically investigated different motor types to understand their performance characteristics and when to use each type.
Group Assignment: Measuring Power Consumption of Output Devices
Measuring power consumption of motors, servos, and stepper motors using adjustable power supplies and precision energy analyzers to understand performance characteristics and when to use each type.
Measurement Setup
We used an adjustable power supply set to 15V and measured quiescent power consumption of 450 mW (0.03 A, where P=IV) before connecting any motors. Power measurements were conducted using the Joulescope (JS220) Precision Energy Analyzer to measure current, voltage, power, charge, and energy in real-time.
Power supply set to 15V for motor testing
Joulescope JS220 Precision Energy Analyzer
Joulescope software interface
Using a potentiometer to change motor speed, we observed that below a certain threshold, the motor doesn't have enough power to spin (no mechanical work, just electrical losses). Above this threshold, speed increases with power. The dI/dt (rate of current change) cannot change instantly—it takes time. The PWM signal from the microcontroller (roughly 50% duty cycle) is smoothed after passing through the motor driver, with more linear behavior on the rising edge than the falling edge.
Motor circuit connections
Complete motor testing setup
50% duty cycle PWM from microcontroller
Smoothed PWM signal after motor driver
Zoomed-in power measurement
Zoomed-out power measurement
Motor Comparison Results
All motors tested at 15V supply, 2A current limit, with the same potentiometer value for comparison. The potentiometer determines speed and power for DC motors, and position for servos.
DC Motors (Voltage-Controlled)
DC Brushed Motor (Large)
Characteristics: Low-speed, high torque, no positional control
Current: 57 mA
Voltage: 14.49 V
Power: 0.8 W
Large DC brushed motor measurement
DC Brushed Motor (Small)
Characteristics: High speed, medium torque, no positional control
Current: 0.34 A
Voltage: 14.47 V
Power: 4.86 W
Small DC brushed motor measurement
Small DC brushed motor operation
DC Stepper Motor (Current-Controlled)
Characteristics: Medium speed, medium torque, zero absolute positional control (relative positioning only)
Current: 2.0 A
Voltage: 10.93 V
Power: 22.33 W
Stepper motor measurement
Stepper motor operation
Servo Motors (5V Supply, Position-Controlled)
All servos tested at 5V supply, 2A current limit. Potentiometer determines position; power consumption remains relatively constant.
Detailed documentation of output device power consumption measurement and motor comparison analysis
Full Assignment Details
For complete details on the Week 8 group assignment, including comprehensive power consumption measurements, detailed motor comparison tables, and complete analysis results, please visit the full assignment page.
We would like to express our sincere gratitude to all members of our section for their invaluable collaboration throughout this group assignment. Your contributions were essential to the success of this comprehensive output device power consumption analysis project.
Collaboration Activities
Power measurement and energy analyzer operation
Motor testing and characterization
Power consumption analysis
Measurement technique documentation
Knowledge Sharing
Joulescope energy analyzer operation and setup
Motor characteristics and power measurement methodologies
Output device selection and application guidelines
Embedded systems power management
This collaborative effort demonstrates the power of teamwork in technical education and hands-on learning. The collective knowledge and shared experiences significantly enhanced our understanding of output device power characteristics and measurement techniques.
References
Output Device Power Analysis Comprehensive guide to measuring and analyzing power consumption of motors and actuators
Energy Analyzer Operation Professional measurement equipment usage and power analysis methodologies
Motor Selection Best practices for selecting appropriate motor types for different applications
Power Management Current limiting, voltage regulation, and power consumption optimization techniques
Embedded Systems Design Guidelines for designing efficient output device interfaces
Ethical AI Use
Documentation of AI tool usage for this week's group assignment summary and website development work.
Week 8 - Output Devices Group Assignment Summary Development
This session covers the development of the Week 8 page for the output devices group assignment, including content structure, technical documentation, and comprehensive coverage of power consumption measurement processes.
Key AI Activities
Content Structure Creation of comprehensive HTML structure for output device power consumption documentation
Technical Documentation Development of detailed sections covering power measurement and motor comparison techniques
Process Integration Implementation of output device characterization and measurement workflow information
Navigation Integration Addition of Week 8 link to main index page for seamless course navigation
Image Integration Integration of key images and videos from week8groupassignment folder with proper styling and captions
Link Integration Addition of external link to full Week 8 assignment details with proper accessibility attributes
AI Tools Used
Cursor AI Code generation, content structuring, and website development assistance
Technical Content Generation Creation of comprehensive output device power consumption documentation
Website Design Implementation of consistent styling and responsive layout
Content Integration Seamless integration of Week 8 content into the page structure
Media Processing Integration and styling of images and videos with proper responsive layouts
```
Added the Motor Comparison Summary Tables. Checking for linting issues:
Added the Motor Comparison Summary Tables to `Week8.html`. The page now includes:
1. **Constant Voltage Comparison Table (15V Supply, 2A Current Limit)**
- DC Brushed Motor (Large): 57 mA, 14.49 V, 0.8 W
- DC Brushed Motor (Small): 0.34 A, 14.47 V, 4.86 W
- Stepper Motor: 2.0 A, 10.93 V, 22.33 W
2. **Constant Current Comparison Table (5V Supply, 2A Current Limit)**
- Servo Motor (Large): 10.6 mA, 4.99 V, 53.4 mW
- Servo Motor (Micro): 5.04 mA, 4.99 V, 25.05 mW
3. **Summary: When to Use Each Motor Type** (already present)
Tables include columns for Motor Type, Size, Current, Voltage, Power, and Characteristics. Styled to match the rest of the page. No linting errors.
---
**User**
run the commits and pushes in small 10mb packets to avoid the limit (make sure to push with each small commit because the limit is at the sync in the end)
---
**Cursor**
Checking git status, then committing and pushing changes in small batches (under 10MB per commit), pushing immediately after each commit.
Checking sizes to plan the commit batches:
Committing and pushing in small batches. Starting with the HTML files:
Committing small images and videos in batches:
Committing the larger GIF and MP4 files in smaller batches:
Committing the remaining large files individually:
Checking for remaining files:
All important files are committed and pushed. Remaining:
- `.DS_Store` (macOS system file; usually ignored)
- `week8 copy.html` (backup copy; not needed since `Week8.html` exists)
Committed and pushed in 6 batches:
1. **Batch 1**: HTML files (Week8.html, index.html)
2. **Batch 2**: Small images/videos (7 files, < 500KB each)
3. **Batch 3**: Medium images (7 files, ~300-850KB each)
4. **Batch 4**: Large videos/GIFs (brushed-motor.gif, stepper-motor.mp4)
5. **Batch 5**: Motor driver video (2.1MB)
6. **Batch 6**: Stepper motor GIF (2.2MB)
All commits were pushed immediately after each commit to avoid sync size limits. All week8groupassignment files are now in the repository. The page is ready with all images and videos.
