David
@nondualknowing.bsky.social
engineer, volunteer, soulful spiritual handy outdoorsy person
3D printed speaker housing with no supports. I’m surprised this worked.
November 14, 2025 at 3:05 PM
3D printed speaker housing with no supports. I’m surprised this worked.
Simple DMX512 Controller using an Adafruit Feather nRF52840 using mechanical encoder. Future plans are to get the high res magnetic encoder connected and implement Bluetooth LE receive in the C/C++ firmware.
November 11, 2025 at 2:05 AM
Simple DMX512 Controller using an Adafruit Feather nRF52840 using mechanical encoder. Future plans are to get the high res magnetic encoder connected and implement Bluetooth LE receive in the C/C++ firmware.
wearing my train sweater inside the train- trainception!
November 1, 2025 at 2:35 PM
wearing my train sweater inside the train- trainception!
Asexuality or ace is a human variation describing minimal or no sexual and/or romantic attraction. Happy belated ace week!
October 26, 2025 at 12:49 PM
Asexuality or ace is a human variation describing minimal or no sexual and/or romantic attraction. Happy belated ace week!
I wanna make a DMX512 controller.
October 25, 2025 at 3:19 AM
I wanna make a DMX512 controller.
I am but a humble cook.
Presenting: “Hand Salad”
Presenting: “Hand Salad”
October 25, 2025 at 3:16 AM
I am but a humble cook.
Presenting: “Hand Salad”
Presenting: “Hand Salad”
3D printed homebrew dual passive radiator minisub. I love the immediacy of 3D printing!
October 24, 2025 at 1:43 PM
3D printed homebrew dual passive radiator minisub. I love the immediacy of 3D printing!
These 3D printed speakers are simple, but get the job done. It feels good to make stuff I can use.
October 21, 2025 at 12:05 AM
These 3D printed speakers are simple, but get the job done. It feels good to make stuff I can use.
Who robbed the Louvre? Wrong answers only.
October 20, 2025 at 3:55 AM
Who robbed the Louvre? Wrong answers only.
Photos of the box with the trees removed, the mini sub installed, and the passive radiator unstuffed.
October 17, 2025 at 4:10 AM
Photos of the box with the trees removed, the mini sub installed, and the passive radiator unstuffed.
A speaker project I am working on. This is a 3D printed mini sub.
October 17, 2025 at 4:10 AM
A speaker project I am working on. This is a 3D printed mini sub.
Got volunteer swag today!
October 16, 2025 at 11:54 PM
Got volunteer swag today!
Printing in progress…
October 14, 2025 at 10:27 AM
Printing in progress…
Thought my speaker looked spooky.
Might delete later.
Might delete later.
October 13, 2025 at 3:57 PM
Thought my speaker looked spooky.
Might delete later.
Might delete later.
Here’s a pic of the hardware:
There’s not much to it. This micro doesn’t support two stop bits on the UART, so I used a timer interrupt and some shifting to generate a clean DMX serial signal. This M5 Stack DMX plug is isolated and 3.3G and $6, which rocks!
There’s not much to it. This micro doesn’t support two stop bits on the UART, so I used a timer interrupt and some shifting to generate a clean DMX serial signal. This M5 Stack DMX plug is isolated and 3.3G and $6, which rocks!
October 13, 2025 at 3:13 AM
Here’s a pic of the hardware:
There’s not much to it. This micro doesn’t support two stop bits on the UART, so I used a timer interrupt and some shifting to generate a clean DMX serial signal. This M5 Stack DMX plug is isolated and 3.3G and $6, which rocks!
There’s not much to it. This micro doesn’t support two stop bits on the UART, so I used a timer interrupt and some shifting to generate a clean DMX serial signal. This M5 Stack DMX plug is isolated and 3.3G and $6, which rocks!
This weekend I bit-banged DMX to gradually ramp up stage lighting in brightness and across color temperature to make a light alarm clock for those overcast days. Used a Seeed nRF52840 XIAO board.
October 13, 2025 at 2:50 AM
This weekend I bit-banged DMX to gradually ramp up stage lighting in brightness and across color temperature to make a light alarm clock for those overcast days. Used a Seeed nRF52840 XIAO board.
thanks for the inspiration
October 2, 2025 at 2:15 PM
thanks for the inspiration
Audio in retrograde- the ancient interior of a Panasonic flipclock alarm radio, stamped many places with [MADE IN JAPAN]
October 1, 2025 at 10:14 PM
Audio in retrograde- the ancient interior of a Panasonic flipclock alarm radio, stamped many places with [MADE IN JAPAN]
A whole lotta shaking goin’ on (a 5.4 in Berkeley)
September 22, 2025 at 3:24 PM
A whole lotta shaking goin’ on (a 5.4 in Berkeley)