@screwlisp @AmenZwa @dougmerritt You can test the high frequency response of your microphone by smashing a fork and a tablespoon together. Or two forks. Or two tablespoons. I don't remember. The more annoying, eardrum-piercing the sound is, the better. It basically has a flat spectrum into ultrasonic.
Then view the Sox spectrogram of the recording and you see if it's rolling off somewhere or going all the way to the end.
#microphone #sox #ultrasound #ultrasonic #fork #spoon #tablespoon #collision #sound #test #hifi #treble #response #pulseaudio #linux
Portable Ultrasonic Cleaner LB-10PUC - HighFrequencyCleaner
https://www.labotronics.com/portable-ultrasonic-cleaner/lb-10puc
Labotronics Portable Ultrasonic Cleaner delivers deep and efficient cleaning using high-frequency ultrasonic waves for jewellery, glasses, dental tools, and precision instruments. It features a compact design, digital display, and transparent lid for easy cleaning cycle monitoring.
#LabEquipment
#Ultrasonic Cleaner
#Labotronics
Portable Spectrophotometer LB-10PRS - PortableColorAnalyzer
https://www.labotronics.com/portable-spectrophotometer/lb-10prs
Labotronics Portable Spectrophotometer delivers accurate color and light measurement for laboratory and industrial applications. Its compact structure supports spectral analysis, color evaluation, and sample testing with fast data processing and easy operation.
Stressed Plants Emit Ultrasonic Sounds Detectable by Technology
📰 Original title: Scientists Discover Plants “Scream” – We Just Couldn’t Hear Them Until Now
🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️
View full AI summary: https://killbait.com/en/stressed-plants-emit-ultrasonic-sounds-detectable-by-technology/?redirpost=a83d2e06-567a-46a2-aedc-06a50aba33f2
Stressed Plants Emit Ultrasonic Sounds Detectable by Technology
📰 Original title: Scientists Discover Plants “Scream” – We Just Couldn’t Hear Them Until Now
🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️
View full AI summary: https://killbait.com/en/stressed-plants-emit-ultrasonic-sounds-detectable-by-technology/?redirpost=a83d2e06-567a-46a2-aedc-06a50aba33f2
A Different Kind of Ultrasonic Levitation
https://fed.brid.gy/r/https://hackaday.com/2026/04/27/a-different-kind-of-ultrasonic-levitation/
Some #Homelab success today:
Finally finished a rough de-duping of my old music files, enough to justify setting up #Navidrome for streaming from my home server.
So I did! Even got it up and running on my phone and my wife's phone. Trying out #Amperfy on my wife's iOS and #Ultrasonic on my GrapheneOS.
So far so smooth!
I wish there was a way for my wife to build her own library out of our super large library (that is mostly my files)... but we can probably find a work around for that later.
Tesla engineers warned against removing radar, and he did it anyway
Struggling with sensor selection for your industrial automation project? 🤔
Our new infographic simplifies the choice between #Ultrasonic and #Photoelectric sensors! Learn the core principles, key differences (speed vs. stability), and when to use each for optimal performance.
No more guesswork! Get expert insights.
Full guide here: https://issrsensor.com/ultrasonic-vs-photoelectric-sensors/
#Sensors #Automation #Engineering #Tech #Industry40 #Manufacturing #IoT #SensorSelection
Karel 'Clock' K.
Labotronics Scientific
KillBait News
KillBait
Hackaday [Unofficial]
Trevor Burrows
Gravitas
ISSRSensor