Notices tagged with electronics

The absolute chaotic energy you see at radio club and electronics clubs.
From top to bottom on the left:
- MMIC's and other GHz
- Miniature valves
-NAILS

#hamradio #electronics

My friend Graham, #electronics guru, #hamradio enthusiast, #maker, avid fixer of stuff and all round good guy found an old photo of himself as a kid in the #70s and decided to try and recreate the same scene 50 years later.

The result is a delight...

1/2)
A fellow #hamradio operator and electronics enthusiast brought me a vintage X-Band power sensor, thanks OZ1ETE 🙂

It has a super sensitive NTC Thermistor, a tiny spherical bead, encapsulated inside a small glass tube. It’s by far the most sensitive Thermistor I’ve ever seen, just holding your hand in front of the waveguide flange, not actually covering it, will make it change slightly.
#rfengineer #rfengineering #electronics #testandmeasurement #sensorsunday

Just got several of these toy calorimeters, meant to teach 7th graders about specific heat and Joule's law. My plan is replacing the heater coils with 50 Ω coax loads, adding motorized stirrers, instrumentation with PT1000 probes, and running two of them in a differential bridge configuration, actively balanced by opamps for RMS to DC conversion, upgrading them from 7th grade physics to college physics. #electronics

I've written a little checklist for my PCB projects. A list of things commonly forgotten or overlooked, that I can check over before submitting a board for manufacturing. I figured it would be useful to share. https://dominionofawesome.com/vca/electrical-design-checklist/

Comments, additions, thoughts? #electronics

built a Colpitts oscillator, common collector version
the inductor is handmade, designed using Coil32
#electronics

Fun fact: You can use a pulse generator to find the transfer function of camera lens just like how you do it for circuits. #electronics

One of the things I'm happy to be using up on these 8051 boards are these stupid 11MHz crystals that I pulled out of a bunch of devices.. Like seriously, 11.000MHz??? WHO DOES THAT!?

#electronics #recycling

I have a weird #electronics / #maker question. All comments, suggestions, boosts welcome.

About a decade ago, I bought these HP QDSP-6064 bubble displays. Can't remember what I originally wanted to do with them, but now I'm idly thinking some kind of low-brightness bedside clock.

Thing is - I know these are pretty rare now. Would they be better off in the hands of a restorer or other collector? Is there a more worthy project out there actively looking for some? Am I over-thinking this?

New blog post!

This time I am exploring ESPhome, a tool to simplify using ESP based microcontrollers with Home Assistant.

I show how to install, configure it, and make two simple projects for starters.

https://stfn.pl/blog/51-introduction-to-esphome-with-projects/

#blog #esphome #esp32 #HomeAssistant #smarthome #diy #electronics

Fun* fact in this video: the 'disposable' vapes thrown away in Britain alone contain enough lithium batteries to make 1.2 Million e-bikes.
I've been independently powering things with vape batteries that I've rescued before seeing this video. Pull out the cell, add a cheap usb charging module and you have a fully rechargeable 3.7v power source. If you need higher voltage you can put them in series and you can even get multi-cell balancing modules for next to nothing if you want to have a few in parallel for more current.
I don't trust them for anything critical, but they're great for low-budget projects as the cells are completely free. My bike lights are all powered by them (one can run a flashing bike light for a couple of weeks' use), as well as various other things that had their batteries die, or that didn't come with rechargeable batteries.
I also only charge them somewhere flameproof, though I haven't had any issues so far.
#making #electronics #reuse
https://www.youtube.com/watch?v=ehp23hrrEHY

There’s a reason why this TI-92 was $10 on eBay. Take the batteries out of your unused electronics people. Now I have spare parts for the functional TI-92 that arrives tomorrow at least.

#electronics #texasinstruments #retrocomputing

"Over 3 billion kilograms of valuable electronics inside children’s toys are thrown away each year, and very few people are aware of this hidden e-waste"

#EWaste #technology #Electronics

https://www.newscientist.com/article/2397075-toys-produce-far-more-electronic-waste-than-vapes/

My VHF APRS beacon has now officially went live again after 2 years! You can track its packets and location here:

https://aprs.fi/info/a/WI2ARD-1

#EE #RF #Radio #HamRadio #AmateurRadio #Electronics

New instance means I copy-paste my #introduction from my previous instance lol. So here’s my #intro!

I’m Bryn, (she/her, 25) and I live in the greater Pittsburgh area! I’m a #bisexual, #polyamorous #trans girl with a passion for #electronics, #music (especially #indie), and human interaction, i.e. #communication. I’m happiest when I’m among friends, lovers, or just other people in general!

I was a team lead in customer facing tech support for a home security company, but I gave that up after facing major #burnout. Now, I’m taking a few months to recuperate while my partners keep me alive, and I’m looking to start a #freelance #branding and #WebDesign co-op with one of said partners!

This account is not professional; I post #nsfw content on occasion. I spent too much of my life without confidence to let my newfound beauty go to waste! :blobcat_coy: This content will always be hidden behind a content warning, of course!

Definitely follow me if you like cute girls, relationship anarchy, free open-source software, or any combination thereof! Boosts are also very much appreciated, but please give higher priority to mutual aid requests and the like.

My personal website can be found here!

Selfie includes EC but is safe for work. :blobcat_derp:

So I've been building a 100% analog polyphonic synthesizer with an unique twist. To use only vacuum tube era technology from the 1930s.

Over 300 neon gas diodes create the sound you hear. Pretty awesome for technology from 100 years ago.

Still a work-in-progress, but I wanted to post a video of it with the innards spread out across the workbench. : }

I call it the "Neon String Machine"

#synthesizers #music #electronics #audio #synthwave