Miles Log
Sat Jul 16, 2022
Researched open source inverters: https://github.com/transistorgrab/OSSI https://github.com/SDI-SoftwareDefinedInverter/TAPAS
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
Sun Sep 2, 2018
Wed Aug 29, 2018
Learned about buck-boost power stages
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
Quc-S Simulation: 
Thu Aug 23, 2018
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
Arduino Power Supply Simulation
Sat Aug 18, 2018
Calculations for Arduino Power Supply
Fri Aug 17, 2018
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
Wed Aug 1, 2018
Tue Jul 31, 2018
Universal Power Supply (UPS) Block Diagram
Notes at Miles Work Meeting
Fri Jul 27, 2018
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
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]
