Miles Log

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Wed Dec 26, 2018

Simplified buck/boost converter design and made bill of materials

Sun Dec 16, 2018

Learning about 555 Timers and PWM

Mon Nov 19, 2018

Learning about PWM and astable multivibrators

Sun Nov 11, 2018

Added control wiring to buck-boost converter draft design

Studying voltage follower circuits to increase input impedance of ADC

Sun Nov 4, 2018

Working on buck-boost converter draft design

Fri Oct 26, 2018

component selection for buck-boost converter

Mon Oct 1, 2018

Started draft design of 1.5kW buck-boost converter

Sun Sep 30, 2018

Found KiCad symbol generator and made symbol for PWM controller

Learning how to implement PWM controller IC

Brainstorming ways to increase PWM frequency

Doing calculations for buck-boost converter

Wed Sep 26, 2018

Researched buck-boost topologies

Tue Sep 25, 2018

Researched Isolation in Digital Power Supplies

Mon Sep 24, 2018

Circuit diagram and cost estimate for current meeting

Added possible parts to forward configuration

Sun Sep 23, 2018

Reassessed flyback configuration and organized research section

Sat Sep 22, 2018

learning about active flyback controller IC and component selection

Wed Sep 19, 2018

learning how to use active clamp flyback controller IC

Mon Sep 17, 2018

learning about gate drivers and estimated cost of power supply components to be around $70 for the flyback configuration, not including the microcontroller and display

Fri Sep 14, 2018

Learning about active snubbers, found an IC to control them

Wed Sep 12, 2018

Learning about lossless snubber circuits

Tue Sep 11, 2018

selected some parts for flyback configuration of power supply

found possible toroid powder core for flyback transformer

Sun Sep 9, 2018

selected a possible core for flyback transformer

Sat Sep 8, 2018

Learning about Flyback Transformer Design

Selected some possible parts for prototype

Wed Sep 5, 2018

learning about buck-boost converters, flyback transformer design, and component selection

Tue Sep 4, 2018

How to install Qucs-S

Sun Sep 2, 2018

Learned about buck-boost converters and new possibilities for flyback transformers enabled by advancements in MOSFET technology

Wed Aug 29, 2018

Learned about buck-boost power stages

Made to do/in progress list

Tue Aug 28, 2018

Talked with Jesse to brainstorm and plan next steps

Created Git repository for microcontroller code

Mon Aug 27, 2018

Learning about RecycleBot and PID controllers

Sat Aug 25, 2018

Made wiki page for Qucs

Quc-S Simulation: default.jpg

Thu Aug 23, 2018

Adjustable Power Supply

Transformer, Rectifier

Tue Aug 21, 2018

Started BoM for Isolated Arduino Power Supply

Prototyped Non-isolated Arduino Power Supply, successfully produced 10V @ 380mA from 120Vac

Mon Aug 20, 2018

^edit^

Arduino Power Supply Simulation

Sat Aug 18, 2018

Calculations for Arduino Power Supply

Fri Aug 17, 2018

Arduino Power Supply

Thu Aug 16, 2018

BoM for Arduino power supply and voltage reference circuit

Wed Aug 15, 2018

Simulated non-isolated power supply for Arduino Mega

Tue Aug 14, 2018

Creating simulation of non-isolated power supply for Arduino Mega

R&D for power supply to Arduino: Universal_Power_Supply/Bill_of_Materials#BoM_for_20W_Power_Supply_.2Fw_12_DC_Output

Sun 12, 2018

Learning about OpenMP with Ngspice for multi-core circuit simulation

Updated Power Supply Simulation.

Learning how to enable multi-core processing to speed up simulation time.

Sat Aug 11, 2018

Installed Qucs-s (Qucs with Spice) to do transient analysis of circuits

Fri Aug 10, 2018

Learning Qucs to Simulate Power Supply

Wed Aug 8, 2018

Initial Design of 800W Power Supply

Tue Aug 7, 2018

Bill of Materials for 800W Power Supply

Fri Aug 3, 2018

Possible Parts for UPS

Wed Aug 1, 2018

Power Supply R&D

Tue Jul 31, 2018

Universal Power Supply (UPS) Block Diagram

Notes at Miles Work Meeting

Fri Jul 27, 2018

FreeCAD Test File

default.jpg OSE Developer Test Video

How many hours each part of the test took to complete:

1) Installing Linux: ~3h. Tried to do a full install onto USB stick but display wouldn't work.

2) Learning FreeCAD: 4h

3) Documenting your work: 2h

Learning FreeCAD was the most difficult task.

Other feedback: A sample FreeCAD file with a competed cube would be helpful as a reference.

Score: 100% of test points completed.

Wed Jul 18, 2018

Video cover letter for OSE Development Team

Mon Jul 16, 2018

Video Cover Letter Prep

Installed OSE Linux on USB stick.

Sun Jul 15, 2018

Requested account but didn't receive confirmation email, communicated with Marcin to get it working. [1]