wavesplash
Joined 18 years ago
Karma
818
Submissions
260
Member since
Feb 17
"And you run and run to catch up with the sun, but it's sinking. Racing around to come up behind you again..."
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Comment · 18 days ago
No closed loop needed. Apparently the brain/nerve circuit just needs a regular input stimulus to let more of output signal get through. Someone in neurobiology may have better answers for the why.
Comment · 18 days ago
I completely agree. if you're going to produce these, do real power management, . However, if you're doing this as one off experiment, driving one tiny eccentric motor at a time for short pulses via a XIAO (ESP32) or RP2040/2350 was fine (we had over a year of use without an issue). YMMV.
Comment · 18 days ago
Right concept (vibrating stimulation) wild design choices. You don't need to stimulate the fingers for this type of treatment to be effective (wrist is enough).
Comment · 19 days ago
Having built a pulsed vibration wristband for someone with Parkinson's, just a few notes. For Parkinson's patients:
- there's a small-ish window in the disease progression where pulsed vibration is able to help a person regain some intentional motor control
- the device doesn't stop the tremors
- the pulsed vibration does let the brain's control signal come through stronger, so drawing/typing/moving the mouse is more intentional.
- this is no more effective than the results of levidopa/carbidopa treatment, and the levidopa/carbidopa typically calms the overall tremors
- as Parkinson's progresses, these devices become useless, and if the patient qualifies for deep brain stimulation, it's worth looking into (regain years of useful life if you're lucky).
You can make a very unsophisticated version of this without a lot of hardware:
- small microcontroller with 3v outputs (XIAO's are perfect)
- 3v sealed eccentric mass motors (aliexpress $1/ea)
- elastic wristband
- usb battery
- software to pulse the motors for about 200 miliseconds for an on off sequence of about 8 times, then rest for about a second and repeat.
Side note: the idea was published in 2016-2017 in a few promotional videos from Microsoft research: https://www.windowscentral.com/microsofts-emma-watch-and-pro...
Comment · 1 month ago
Watch the video the article is based on - not connecting to the internet doesn't keep you safe in many cases: https://www.youtube.com/watch?v=6IFVTcM28KA
Comment · 1 month ago
Worse, if you watch the GN video this article is based on you'll find the TV can figure out how to leverage other non obvious networks (threads, etc) to reach LG servers. Worth a watch to see how bad this is: https://www.youtube.com/watch?v=6IFVTcM28KA
Comment · 4 months ago
Fender makes a whole series of Strats at different price points. The challenge is even at the high end Fender has inconsistent QA, so the 'knockoffs' are sometimes way better quality/consistency. See this video for more info: https://www.youtube.com/watch?v=OU7RUpkXsV0
Comment · 9 months ago
Terrific writeup. Massive congrats to the whole team for all that creative thinking in flight and all that was achieved. (Add a note about updating FPGA's in space!) Looking forward to team Bedo unlocking VLEO for everyone.