meeting prep

PVC clamp CAD

added voltage buffer and studied PWM control IC to find ways of switching between buck and boost functions

3D printer optimization

freecad python research

Studying voltage follower circuits to increase input impedance of ADC

Added control wiring to buck-boost converter draft design

Researching buck boost circuit implementation.

3D printer research, CAD, and file organization.

working on circularknitic mountain, went down a dead end for a few hours, then started back up and worked on basic form without the groove path.

Experimented with debugging of FreeCAD scripts. Wrote documentation on OSE wiki.

Kit build

D3D PVC Mini research & wiki updates

answered a few emails. prep to work tomorrow

Kit prep #2

D3D PVC Mini PVC mount design

review circular knitic files, start new to-do list
add some links to ose github page

Kit prep #1

reviewing D3D CAD for PVC Mini

Kit building; shipping research

Kit building

marketing, 3 day workshop development, kit development

Searching through scrap for proper value capacitors, de-soldering.

Working on buck-boost converter draft design

D3D Mini PVC wiki and CAD editing

Write documentation about mechanics of 3D printer.

Kit logistics with Alex; prep

Kit certification prep

repo setup & modularizing LT CAD.

phplist

Website updates; kit certification work

OSE Dev Team meeting

Website updates; 3D printer fix

PC CAD cleanup, LT file organization, & freecad research

learning how to implement PWM controller IC for buck-boost converter

including 6 hours on redesign of filament maker

lecture in Hong Kong

Reorganized tools and re-inventoried; workshop review

To get ABS to stick, spread base of ABS juice (10 acetone:1 ABS). Using foil as substrate to easily remove printed part from bed. Have PEI plastic to cover bed. Crappy prints at 200 C extruder, nicer prints at 225-235.

reflect on 1st workshop

reworked pc v18.01 assembly and narrowed it to fit LT

meeting with Jesse

learning how to connect control IC for buck-boost converter

Workshop Reflection

Workshop @ CCL, Oakland, CA

Public Workshop

Working on getting lab 3D printer up and running. It is a Rostock, with 3 axis. ABS material is difficult to get to stick the bed. Will not stick to glass, have tape down but still not sticking. Will try roughing up the tape surface and hairspray. Should have PET sheet somewhere.

Workshop prep

got free ABS filament and ordered more PLA. went to test ABS but wire to heater carriage was broken. Ordered replacement from e3d, and a volcano starter kit. kind of expensive replacement parts, will compare shipping speed to folgertech. thinking about how to shield extruder fans and motors from magnets used for mounting. really like the magnetic mounts but needs a better assembly procedure.

LT/PC design