Marcel Stieber retweeted
Everything you need to know about Lithium-ion batteries 🪫🔋
As an electric car owner, laptop and smartphone user, you have choices how to prolong battery life.
Let’s go 🧵
Marcel Stieber retweeted
Happy National Dog Day!
#nationaldogday #welovedogs #youveneverhearditbefore #hamradio #amateurradio
Marcel Stieber retweeted
Awww yeah! Love it when a new design works first try! We made these Coin Cell Power boards to help make displays of our soldering kits for @SiliConSJ They can either supply a regulated 3V or 5V to the badge, and they can be daisy-chained off of one USB input.
Marcel Stieber retweeted
ESD damage happens to test gear.
It happens in weird ways, too.
Here are 7 tips you should follow to avoid damage:
Marcel Stieber retweeted
👀 Sneak a peek at the deepest & sharpest infrared image of the early universe ever taken — all in a day’s work for the Webb telescope. (Literally, capturing it took less than a day!) This is Webb’s first image released as we begin to #UnfoldTheUniverse: nasa.gov/webbfirstimages/
ALT The background of space is black. Thousands of galaxies appear all across the view. Their shapes and colors vary. Some are various shades of orange, others are white. Most stars appear blue, and are sometimes as large as more distant galaxies that appear next to them. A very bright star is just above and left of center. It has eight bright blue, long diffraction spikes. Between 4 o’clock and 6 o’clock in its spikes are several very bright galaxies. A group of three are in the middle, and two are closer to 4 o’clock. These galaxies are part of the galaxy cluster SMACS 0723, and they are warping the appearances of galaxies seen around them. Long orange arcs appear at left and right toward the center.
Marcel Stieber retweeted
TIL that a lot of heatsinks are made with a process called 'skiving', which basically means 'scraping' fins out of the base material.
I always thought they were milled or extruded!
Original video: youtube.com/watch?v=6PUk0m3b…
Marcel Stieber retweeted
Revision v2.2b. Firmware updated to support hardware changes, and fixed a few other things while I was in there.
Marcel Stieber retweeted
Ready for BayCon 2022 Radio Conference at Western Technical Control. Will I see you there?
bay-net.org/baycon.html (YouTube link is on this page)
Marcel Stieber retweeted
Version 7.0 now available for free…
EZNEC Antenna Software by W7EL eznec.com/
Marcel Stieber retweeted
ONLY 7 SLEEPS PEOPLE! BayCon 2022 is nearly here!
bay-net.org/baycon.html
0900PT/1200ET Saturday February 5
Great Presenters (except one slacker)
Great Raffle prizes
Can't beat the price!
@kj6vu @HamWorkbench @VE6EY @smittyhalibut @va3on @kyleaa0z @AI6MS
Marcel Stieber retweeted
Have you heard about BayCon 2022? The online ham radio conference with an excellent line-up of speakers? Yes, it's a fundraiser however admission is no charge. I hope to see you there :)
bay-net.org/baycon.html
@kj6vu @smittyhalibut @va3on
Marcel Stieber retweeted
Tonight's live stream of the @HamWorkbench crew (me, @kj6vu @VE6LK @va3on and Mike NoTwitter) assembling the Anderson Powerpole Distribution kits starts at 6pm Pacific, Friday November 5th. youtu.be/E4yLO1TsUTw Please RT and spread the word!
Marcel Stieber retweeted
Do you love helping those in need and have strong network security and people skills? We have a rare opening for a senior technical position on our team. Come join us! jobs.cisco.com/jobs/ProjectD…
Marcel Stieber retweeted
CRM100, a MEMS Gyroscope from Silicon Sensing. No, you're eyes aren't deceiving you; there is a ring floating above to bottom ASIC (it's on a pillar).
The datasheet has a great in-depth explanation of how it works, but it has to do with the coriolis force effect on the ring.
Marcel Stieber retweeted
Today I witnessed history. Now you can too. You’re watching video of the #MarsHelicopter’s first flight – a true “Wright brothers” moment.
Watch it all unfold:
✅ Spin-up
✅ Takeoff
✅ Hover
✅ Turn
✅ Landing
Read more: go.nasa.gov/3edNn0u