92 Results for "《〈 문의 OIO↗5793↗7458 》〉 셔츠룸후기た《〈 문의 OIO↗5793↗7458 》〉 ⑷plenty㎋셔츠룸후기셔츠룸후기んteeth 셔츠룸후기선릉셔츠룸 강남셔츠룸￦셔츠룸ⓤsilverⓞ"

Solar Shopping List
Log from Solar-Hydro
After digging through my collection of scrap building materials, I've revised my plan for mounting four concentrators in a box together down to three. It turns out that I've got at least twelve 2.4m (8') lengths of 4x2" pine, but only one length that's...

Open Modular Electronics Bench Architecture
Log from Open Modular Electronics Bench
The goal of the Open Modular Electronics Bench is to provide a modular and easily extensible benchtop instrumentation system, in order to facilitate a community-driven ecosystem of instrument modules. Haphazard design choices will kill adoption of any...

PCIe Fun, and the PT NIC has arrived
Log from pfSense Router/Firewall Install
20200219 - Tuesday From now on I'm going to refer to the NICs by their most obvious identifier for two reasons: It's shorterI'm probably returning the original, but would like to easily be able to refer to either. I'll refer to the original as PT. I'll...

I2C
Log from Q2 Computer
I should have my test board for the 2SK3018 transistors back next week, but in the meantime I've been thinking about other changes.In the interest of adding more I/O capabilities, I think I've settled on adding an I2C interface to the Q2. I2C is...

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...

Blinking LEDs at 28 MHz
Log from LED Oscilloscope Mk. II
So I wired up some 74AC logic to drive the horizontal board, and hooked up an AD9200 ADC to the vertical board. I found that the maximum usable sampling rate was just under 30 MS/s, with good results at 28. The limitation seems to be the...

Solar Irradiance and comparing incoherent vs coherent "power" + CD Diodes, maybe + burn speed -> mW
Log from CD/DVD mechanisms and cartesian thinggie[s?]
UPDATE (12-10-15):WARNING: HORRENDOUS MISUNDERSTANDING MAY FOLLOW!Take all bits regarding mW vs. mA with quite a bit of speculation! (new log-entry to follow).----------OldNote:This log has changed quite a bit since its introduction... all additions...

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...

Boosting voltage
Log from Compact, low-power Geiger counter
Towards efficient boost converter architecture Most DIY Geiger counters that I've seen on the Internet have very simple architecture: just an oscillator driving a transistor, sometimes with Zener diodes to limit the output voltage. This approach...

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...

1
2
3
4
5
>
>|