alt Hacker NewsGyroscopes Got So Small [video]
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The gap is so small that a bacteria could easily fit between them. My garage is so small that a bacteria could easily fit inside.
I recently purchased the S3 Stick from M5Stack.
It's an ESP32 with:
- microphone and speaker
- wifi
- bluetooth
- screen
- two buttons
- IMU with six dimensions
all for under $35.
You can see a video of me using it to control a web based mini plane simulator https://x.com/alexpotato/status/2109782226841870352?s=20
Wild how cheap this kind of stuff has gotten.
A few things about MEMS devices I have not been able to figure out is: 1. Is the sensing/moving structure actually disconnected from the rest of the device? 2. If so, how does it not get stuck to a side? 3. If it isn't disconnected, doesn't the friction from the connection cause an offset in the reading? 4. How do they etch the structure so that it is disconnected from the layer below?
I was going to share this with my kid, but then the video turned into an advertisement for "war thunder" a free videogame.. no thanks
this is wild i literally did not realize we had them so small at this point
It's cool'cause there's a commercial baked into the middle of it.
"How" Gyroscopes Got So Small.
God, I so hate the auto-title "fixing" feature on HN.
I don't have time to watch the video but I was curious why MEMS gyros were shaped thus. Apparently it is to maximize sensitivity through the Coriolis force.
https://en.wikipedia.org/wiki/Vibrating_structure_gyroscope
Their peculiar geometry reminds me of computer-designed antenna.
and we get to use their outputs in any app we develop!
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Thanks! I didn't watch the video yet but their YT channel rocks. Subscribed. :D
"Your phone knows its position in space"
Mistakes happen, but in a video about gyroscopes it's hard to forgive mistaking position and orientation. That's the kind of thing that warrants a delete and re-upload.