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

Introduction + First Look at PCB
Log from HomeKit enabled Aquarium Lighting
Recently we bought a BiOrb Flow 15L aquarium for our two fish. It looks pretty sleek (as you can see in the picture that I grabbed from the internet) and has a built-in filter and white LED light, both powered from a single AC-AC adapter (that has two...

Power Supply Design
Log from Novasaur CP/M TTL Retrocomputer
The remaining instability in the Rev. 1 board is down to power issues. The power distribution was deliberately underspecified to highlight problem areas and test different designs. There are two main areas of concern: inductance and current consumption....

Passive Water Cooling
Log from Multitool 3D Printer - Blackbox
Passive water cooling was one of the innovations I brought in with the Blackbox. There are three reasons why I prefer water cooling: I had only good experiences with water cooling before, the Kraken Hotend which I used for a while never failed...

Drive Bay N100 mini PC HP Microserver Upgrade
Details from Drive Bay N100 mini PC HP Microserver Upgrade
The Intel N100 is a really cool, low power chip. With 4 of Intels latest Alder Lake 'E' cores it performs really well for such a low power CPU. It has a single channel of DDR5 RAM, which helps keep it low power as it would not really see a benefit from...

Version 0.3 is calm, cool, and collected
Log from Plasma Toroid (sky-guided PCB edition)
Revision 0.3 of the induction driver creates a plasma toroid that's stable and controllable, and does so without overheating. I'm closing in on a finalized version of the driver. Soon, both the induction coil and driver circuit will be unified into a...

Sunrise LED
Log from easy-alarm-clock
Background A gradually brighter light can mimic the sun rise. It will allow for gentle wake-up in the morning. Experience with the Philips HF3463 showed me that you shouldn't count on it to get up on time. I sometimes find myself...

Furnace PID Upgrade
Log from MakerFoundry
Things have been a bit slow around here. Between work travel, personal events on weekends and waiting for components to arrive, not a whole lot has been happening on the MakerFoundry. My schedule should free up next month, so I'm hopeful...

555-controlled Switching Mode Power Supply
Details from 555-controlled Switching Mode Power Supply
Goal of this project was to create a 7V/10A power supply for a big 74-series logic project (which never happened...) I decided to use as much compoments manufactured in my home town by Tesla Rožnov in former Czechoslovakia prior to 1990, as possible....

PCIe x16 Auxiliary Power for Dell PowerEdge R820
Details from PCIe x16 Auxiliary Power for Dell PowerEdge R820
So, the PowerEdge R820 has a PCIe x16 slot, but there is no auxiliary power cable for graphics cards that require one, and no place to plug in such a cable either. At first glance, it also does not appear that there is any convenient place to tap +12V...

Boat Ventilator Control
Details from Boat Ventilator Control
Humidity and Temperature sensing fan controller for a small boat, with battery protector. My boat can get quite hot, suffers from condensation, and a permanent fan kept on flattening the battery. I have built a small controller...

Add Output ON/OFF control to a power supply
Details from Add Output ON/OFF control to a power supply
I have a low cost 30V 10A 300W CV/CC power supply (~$50 on ebay) that I want to add a output on/off control function. With this supply you need to either turn the entire power supply off or disconnect the banana connection and vise versa for turning...

HDMI splitter with built-in extension
Hacker page by teardownit
Opening speechPreviously, we've reviewed several options for twisted-pair network cable HDMI extenders. We've also taken a look at their various functions. This time, i would like to focus on an interesting type of device: an HDMI splitter/extender via...

Keyboard Not Found & Troubles with finding it
Hacker page by Vladimir Aubrecht
Long time ago it all started with me trying to find new keyboard. After couple of weeks browsing through every possible manufacturer I got an idea: "How hard it can be to build my own keyboard! It's just few buttons connected to microcontroller, I'll...

Tube headphone amplifier
Details from Tube headphone amplifier
So if we’re going to design and build a tube headphone amplifier that will work reasonably well with a variety of models, what should we consider?Damping factorProperly loading the tubesSufficient listening levelsFrequency ResponseSimplicityDamping FactorDamping...

music contest. -- DEADLINE APPROACHETH!
Log from Floppy-bird
Update: "DO IT NOW." Deadline in less than 2 weeks! Further info/updates at the bottom. =================================== FloppyBird is a two-parter... The first, proof-of-concept, is to use my new PWM-nibble storage technique to store audio on a floppy...

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