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MORE RADII!!
Log from Hubsan X4 Replacement Frame
I haven't putzed about with the v0.1 base at all, but I think I've got a motor mount design that I like. It's got the split bolt setup for securing the motor (including a cutout for holding a 2-56 nut), and the legs are cool lofted dealies. Lots of radii...

Laser Cut Inserts
Log from Star Trek: The Mirror Universe Pinball
1/2013: Mid week last week; I activated my Techshop.ws membership and schedule myself for the Laser cutter SBU on Saturday. No; I didn't feel like I needed the SBU; but given my issues with my personal laser cutter - I still needed to make some progress....

Control Hardware Starting to Take Shape
Log from Goliath - A Gas Powered Quadcopter
Up till now the work on Goliath has concentrated the drive train and the structure. The controls were put on the back burner until the other design problems were addressed. The other items aren't done, but the project has progressed to the point that...

How it works (part one)
Log from repurposed luminiferous aether detector
The hardware that will be integrated together and their purpose is:HP5528A Laser interferometer measuring system.The laser interferometer is the primary measuring instrument for this overall project.It is capable of resolving the motion of a movable...

slight change of plans
Log from repurposed luminiferous aether detector
here is how the construction of the interferometer has gone so far. I cut the 4"x4" tubing from a 10 foot section of spare tubing that I've had in storage for about ten years. It was cut off using a router and straight edge. I drilled...

First sedate the patient.
Log from Adding a light touch to a "classic" microscope.
Since the microscope in question was actually a pile of broken microscopes (dumpster find), with just about enough parts to make two working 'scopes, the majority of the work in this project was spent cleaning repairing and re-assembling the optics and...

The Hull
Log from Project C.A.T.P.O.O.P.
I decided to use a trimaran design for stability. Since this is a prototype, low price and speed of construction is the most important factor. I looked around my shop for 'stuff that would float'. I saw an old pair of PVC outriggers from my homemade...

Electronics Design (Redux)
Log from Squirco Smart Home System - Sensor Network
Two project logs ago I posted pictures of what I called "final" hardware. That was a total lie.I'm going to make up for it by detailing the evolution of the hardware through some of the major revisions, as well as the decisions that drove the design...

Standards of a sort
Log from Twin Cities Maker
While the eclectic nature of our shop has a certain charm, several areas beg for a bit of standardization. So from now on all new cordless tools will be DeWalt 20v lithium, and all new shop vacs will be Ridgid 14gallons. Obviously interchangeability...

Initial Thoughts
Log from Hubsan X4 Replacement Frame
As I mentioned in the description, I'm mostly looking to improve the motor mount system--I'm not a fan of two friction interfaces working against each other, especially when one can potentially cause damage to the motor leads. Last time I tried to pop...

A quick'n'dirty CAD drawing...
Log from Hubsan X4 Replacement Frame
I'm planning to 3D print the white bits, so I'll spend some time improving their shape (and generally improving the awesomeness factor of this design). This shows the basic concept; everything is sized roughly right (although the span is a bit wide compared...

Inspirations
Log from Hubsan X4 Replacement Frame
This list is far from comprehensive, but these are a few existing projects:3D printed frame by xm_holgerAll-CFRP frame by rz_alexH-frame by RCaDDiCT!CFRP design by ridemtb473D printed frame by stu121Got another? Toss a link in the comments and I'll append...

Trust in Cyanoacrylate
Log from Hubsan X4 Replacement Frame
Note to self: design-for-manufacture is NOT the same as design-for-assembly. Especially when DFM translates into "who cares, we're 3D printing it anyway, I'll just watch wall thickness and drain holes and be good to go". Mocking up the X4 frame proved...

Extension Wires, First Flights, and Learning from Failure
Log from Hubsan X4 Replacement Frame
Nothing like a positive title, right? Spoiler: the first flight didn't go exactly as planned, but with any luck I learned a few lessons.My 28 AWG wire assortment and liquid electrical tape (yup, this is a thing!) arrived earlier this week. I reinstalled...

Software, and hand-soldered prototype
Log from Improve the Haber process
New board, 9000 lines of software, resistive load, drill-press frame.I managed to pick up a bug which slowed me down a little this week. Just wrote software and did a few minor tasks.Someone at my space works for Linear Technologies (!), and knows LTSpice...

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