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

Time to put everything togeter piece by bit
Log from Boosterado LightSquare
A decent amount of craft and prototyping,hacking went to fabricating square matrix of LEDsfirmly attached to massive passive planar square heatsink.Two hacked boost power supplies are tuned,CC power supply frame-heatsink construction under way.all savings...

The motherboard
Log from Motorola 68000 computer
Here's another picture of the board - this time with RAM modules, ATA CompactFlash card, RS232 cable and power supply plugged in.The board requires a regulated 12V input. It generates a 5V logic supply using an LM2678 (the package mounted to the large...

Some Inital Balancing Tests
Log from OSCAR: Omni Service Cooperative Assistant Robot
It has been about 2 months since I have last updated the build logs, there have been lots of development since then. Now I shall attempt to document them in the next few logs.In the previous log, we documented that we have fabricated the test base together...

Base LED fixture
Log from Blue Sky + Corrected spectrum White LED fixture
I really liked simple geometrical forms, so I got square 40W 4000K LED fixtures. They were relatively inexpensive (~40$ each), their large area ensures decent cooling and long life. I disassembled one to figure out if it's possible to stick LEDs inside...

Hacker Box Visits North Dakota
Log from Travelling Hacker Box
The Hackaday.io Traveling Hacker Box recently arrived in the mostly rectangular state of North Dakota. It was full of numerous goodies that any reader of Hackaday would be interested in having.Here are some photos of the stuff inside:First we have a...

Laser Driving
Log from CD/DVD mechanisms and cartesian thinggie[s?]
Update (9-10-15): Adding a photo of my circuit (at the end of this log)--------------One potential option is using the DVD-laser for etching, etc...Doing so requires a driver...Apparently the de-facto laser-[diode]-driver these days is called the "DDL"...

Burning [out] a laser diode ++
Log from CD/DVD mechanisms and cartesian thinggie[s?]
Intentionally overpowered the DVD (not DVD-R) laser, to see what would happen... Was hoping there'd be some obvious indicator right before it blew-out so I could watch for that with the more "valuable" (harder to come-by) DVD-R lasers. No such luck.The...

ramblings on precision and non-steppers
Log from CD/DVD mechanisms and cartesian thinggie[s?]
This was a long-winded response to a comment/question by @alpha_ninja regarding the precision attainable with sled-mechanisms driven by DC motors, rather'n steppers. It seems rather irrelevent, now that I've discovered that most DVD (vs CD) drives use...

Brushed DC Motors: controller basics
Log from Supercon talk: a pragmatic guide to motor controls
BDC's are voltage-sensitive devices. That's good for us because we understand voltage. If you apply enough voltage across a BDC, it moves. If you apply more voltage, the motor moves faster. Reverse the voltage and...you guessed it, the motor moves in...

Stepper motors: microcontrollers & drivers
Log from Supercon talk: a pragmatic guide to motor controls
Any modern MCU can generate the PWM we need to drive a stepper. As before, we just need the right H-bridge for our power demands and at least 4 GPIO. I'd always prefer to use a hardware PWM and a little bit of counter/toggling code but in a pinch you...

Audio-Amp Motor Driver GO!
Log from Random Ridiculosities and Experiments
Alright! It looks like it's a go (see previous log).Briefly-recapped, I've a Class-D Audio Amplifier chip that I wanted to try out as a DC Motor Driver. Why not, eh?Finally finished the PCB-etching and soldering process, and It Works! ish.There seems...

Audio Amp Motor Driver -- GO!
Log from Random Ridiculosities and Experiments
Alright, so the basic idea is to treat the (linear) audio-amp (TDA1510, so far..) like an op-amp, then to treat that op-amp as a comparator, then feed that comparator a PWM input. This [mis]treatment might be questionable, but it seems to work!This log...

Day 1 - mashing hardware together.
Log from Scanning EIT Imaging System (SEITIS)
The first day of this project was pretty fun, and I made some decent progress. I wanted a way of moving two sets of 8 electrodes down in small steps, rotating one set. With some scarp tubing, a plastic cricket stump, some screws out of an old printer...

Acrylic case
Log from LEDBrick Reef Aquarium Lighting
Spent some extra time on the outer acrylic enclosure design - all the intake is on top, and the exhaust vents have been extensively restyled with a nice wave motif.Laser cut from 1/8" acrylic.Also added a fan shroud to prevent internal air recirculation...

Thinking about next revision
Log from DIY programmable (SCPI) bench power supply
While firmware M2 is under heavily construction (managed by my colleague) I spent some time to summarize observations and obstacles found in the latest revision of the hardware part and see to which extent (and that is limited with lack of knowledge...

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