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#electronics

40 posts34 participants2 posts today
Public
ftg

Btw tried this Stannol SnCu0,7NiGe solder, as NiGe is supposed to flow almost as well as proper leaded stuff, and it did. But apparently the Kristall 600 flux used in this did not wet stuff as well as it could.
And the joints were not shiny :(

Or maybe it's because it's Stannol.

A a full, green 250gram roll of Stannol SnCu0,7NiGe solder wire. In the foreground is the PCB from one of those super cheap plug-in wifi repeaters from aliexpress and it's case. Along the ESD mat are multiple random components strewn around.
#electronics#soldering#solder
Public
JSON Alexander

Done making a few reference designs for an I2C and power over RJ45/twisted pair daisy chaining system (similar to the SparkFun QwiicBus but hopefully a little cheaper as I'm building it myself), just need to order the boards and see if it blows up, I've done work adding load switching and TVS diodes (following helpful pointers by @gsuberland ) which I've never worked with before so I'm quite scared I've messed this up a little if anyone can look over and advise

github.com/jasonalexander-ja/P

Power and I2C daisy chained over ethernet patch cables. - GitHub - jasonalexander-ja/PicoChain: Power and I2C daisy chained over ethernet patch cables.
GitHubGitHub - jasonalexander-ja/PicoChain: Power and I2C daisy chained over ethernet patch cables.Power and I2C daisy chained over ethernet patch cables. - GitHub - jasonalexander-ja/PicoChain: Power and I2C daisy chained over ethernet patch cables.
#electronics#maker#kicad
Public
JJ Celery

Now Of Course because I'm facing a mountain of laundry and the weather is shite my dehumidifier decided to throw a hissy fit.

It's been making an ungodly noise starting just this week.

So I opened it up: and oh wow do I love well made consumer electronics. Easy to open. Consistent screws within and without. Sensible arrangement of parts inside. Cable management part of the design, with routing supports integrated into inner housing. Four different safety switches.

#electronics#repair
Public
Yvan

The simple little Wacom tablet I bought for Kat circa 20 years ago finally gave up the ghost. 😢

But wait!!

All that has happened is the wire has broken at a stress-point... #WeCanFixIt!

If you ever wondered what the guts of an early 2000s Wacom tablet look like... now you know. (More photos to come...)

I don't really know how this stuff works but I assume it's something capacitive, some field-effect... inductive? I could web search that I guess.

A slivery clear cable with a stress break in it exposing the inner wires, the red one is broken.
The label on the back of a Wacom tablet with the WACOM logo top-left, showing the Model is CTE-630 (Sapphire) and other product details.
A circuit board showing where the USB wires are soldered on, red, white, blue, thin black, thicker black.. soldered onto the edge of a tab off the main circuit board which is all lines of traces.
Photo of the corner of a Wacom table circuit board showing the logic parts on one edge; little crystal oscillator mounted in a through-hole in the bottom-right... then a straight row of various ICs to the left.
#electronics#repair
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