Paul Stoffregen
@paulstoffregen.bsky.social
Electronics, Teensy, Arduino, Making, DIY Tech
he/him
he/him
Reposted by Paul Stoffregen
From the NTSB investigation into the Titan submersible, thats the internals of some super expensive commercial deep sea camera they used and it contains some redacted @adafruit.com Qwiic/Stemma board and a Teensy 3.2
Very funny that they requested to redact the markings.
Very funny that they requested to redact the markings.
October 19, 2025 at 1:04 AM
From the NTSB investigation into the Titan submersible, thats the internals of some super expensive commercial deep sea camera they used and it contains some redacted @adafruit.com Qwiic/Stemma board and a Teensy 3.2
Very funny that they requested to redact the markings.
Very funny that they requested to redact the markings.
minichord by Benjamin Poilve is a pocket size instrument used to build chord progressions, internally using Teensy 4.0.
www.pjrc.com/minichord-el...
forum.pjrc.com/index.php?th...
www.pjrc.com/minichord-el...
forum.pjrc.com/index.php?th...
August 19, 2025 at 7:15 PM
minichord by Benjamin Poilve is a pocket size instrument used to build chord progressions, internally using Teensy 4.0.
www.pjrc.com/minichord-el...
forum.pjrc.com/index.php?th...
www.pjrc.com/minichord-el...
forum.pjrc.com/index.php?th...
Just want to share my excitement at finally finding a KVM switch that doesn't suck. No more attention-breaking 5-10 seconds of black screen when switching between my Mac and Linux machine.
This isn't sponsored or an ad, only me enjoying what has seemed impossible for so long.
This isn't sponsored or an ad, only me enjoying what has seemed impossible for so long.
August 18, 2025 at 12:06 AM
Just want to share my excitement at finally finding a KVM switch that doesn't suck. No more attention-breaking 5-10 seconds of black screen when switching between my Mac and Linux machine.
This isn't sponsored or an ad, only me enjoying what has seemed impossible for so long.
This isn't sponsored or an ad, only me enjoying what has seemed impossible for so long.
Nick Rehm's dRehmFlight VTOL project using Teensy and MPU6050 motion sensor is intended for teaching flight control and stabilization concepts.
www.pjrc.com/drehmflight-...
www.pjrc.com/drehmflight-...
August 6, 2025 at 1:38 AM
Nick Rehm's dRehmFlight VTOL project using Teensy and MPU6050 motion sensor is intended for teaching flight control and stabilization concepts.
www.pjrc.com/drehmflight-...
www.pjrc.com/drehmflight-...
Yang Zhang, Wolf Kienzle, Yanjun Ma, Shiu S. Ng, Hrvoje Benko, Chris Harrison used Teensy to help develop ActiTouch, robust touch detection for on-skin AR/VR.
www.pjrc.com/actitouch-vr...
www.pjrc.com/actitouch-vr...
July 31, 2025 at 5:46 PM
Yang Zhang, Wolf Kienzle, Yanjun Ma, Shiu S. Ng, Hrvoje Benko, Chris Harrison used Teensy to help develop ActiTouch, robust touch detection for on-skin AR/VR.
www.pjrc.com/actitouch-vr...
www.pjrc.com/actitouch-vr...
Adrian created this 2-key keyboard for a rhythm game. Two mechanical keys fit nicely above Teensy.
www.pjrc.com/two-key-keyb...
www.pjrc.com/two-key-keyb...
July 28, 2025 at 4:21 PM
Adrian created this 2-key keyboard for a rhythm game. Two mechanical keys fit nicely above Teensy.
www.pjrc.com/two-key-keyb...
www.pjrc.com/two-key-keyb...
Aaron Todd of One Hacker Band uses Teensy to make musical instruments play themselves!
www.pjrc.com/one-hacker-b...
www.youtube.com/watch?v=PQKq...
www.pjrc.com/one-hacker-b...
www.youtube.com/watch?v=PQKq...
July 23, 2025 at 11:12 PM
Aaron Todd of One Hacker Band uses Teensy to make musical instruments play themselves!
www.pjrc.com/one-hacker-b...
www.youtube.com/watch?v=PQKq...
www.pjrc.com/one-hacker-b...
www.youtube.com/watch?v=PQKq...
YouTuber James Bruton created a prosthetic arm which uses machine learning mimic his real arm based on the position and posture of other parts of his body.
www.pjrc.com/machine-lear...
www.youtube.com/watch?v=Ip83...
www.pjrc.com/machine-lear...
www.youtube.com/watch?v=Ip83...
July 10, 2025 at 7:44 PM
YouTuber James Bruton created a prosthetic arm which uses machine learning mimic his real arm based on the position and posture of other parts of his body.
www.pjrc.com/machine-lear...
www.youtube.com/watch?v=Ip83...
www.pjrc.com/machine-lear...
www.youtube.com/watch?v=Ip83...
Ben Glover’s MIDIHEX, an isomorphic MIDI controller, is powered by Teensy 4.1. It supports not only velocity sensing, but MIDI Polyphonic Expression and microtonal scales.
www.pjrc.com/midihex-harm...
www.pjrc.com/midihex-harm...
July 2, 2025 at 4:26 PM
Ben Glover’s MIDIHEX, an isomorphic MIDI controller, is powered by Teensy 4.1. It supports not only velocity sensing, but MIDI Polyphonic Expression and microtonal scales.
www.pjrc.com/midihex-harm...
www.pjrc.com/midihex-harm...
Wow, "ChatGPT Psychosis" wasn't on my 2025 bingo card! Really hope it's extremely rare, but sharing because anyone may have friends or relatives falling for AI-backed delusion and really in need of help.
futurism.com/commitment-j...
futurism.com/commitment-j...
People Are Being Involuntarily Committed, Jailed After Spiraling Into "ChatGPT Psychosis"
People experiencing "ChatGPT psychosis" are being involuntarily committed to mental hospitals and jailed following AI mental health crises.
futurism.com
June 29, 2025 at 9:23 AM
Wow, "ChatGPT Psychosis" wasn't on my 2025 bingo card! Really hope it's extremely rare, but sharing because anyone may have friends or relatives falling for AI-backed delusion and really in need of help.
futurism.com/commitment-j...
futurism.com/commitment-j...
Robert Xiao, Gierad Laput, Yang Zhang and Chris Harrison have used a Teensy to prototype on-touch contextual functionality for smart IoT appliances
www.pjrc.com/electromagne...
www.pjrc.com/electromagne...
June 24, 2025 at 3:00 PM
Robert Xiao, Gierad Laput, Yang Zhang and Chris Harrison have used a Teensy to prototype on-touch contextual functionality for smart IoT appliances
www.pjrc.com/electromagne...
www.pjrc.com/electromagne...
Getting excited for Teardown 2025 this weekend.
June 19, 2025 at 9:22 AM
Getting excited for Teardown 2025 this weekend.
Now that SparkFun is manufacturing Teensy (a good thing which will let me focus more on software), we're having a Leftover Teensy Stuff sale.
www.pjrc.com/store/leftov...
Half price Teensy with minor flaw + grab bag of random leftover stuff...
USA only shipping
www.pjrc.com/store/leftov...
Half price Teensy with minor flaw + grab bag of random leftover stuff...
USA only shipping
April 14, 2025 at 12:13 PM
Now that SparkFun is manufacturing Teensy (a good thing which will let me focus more on software), we're having a Leftover Teensy Stuff sale.
www.pjrc.com/store/leftov...
Half price Teensy with minor flaw + grab bag of random leftover stuff...
USA only shipping
www.pjrc.com/store/leftov...
Half price Teensy with minor flaw + grab bag of random leftover stuff...
USA only shipping
Next week PJRC will have a Leftover Teensy Stuff sale (now that SparkFun is manufacturing all Teensy boards).
Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff.
USA only shipping on this sale.
Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff.
USA only shipping on this sale.
April 9, 2025 at 8:55 PM
Next week PJRC will have a Leftover Teensy Stuff sale (now that SparkFun is manufacturing all Teensy boards).
Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff.
USA only shipping on this sale.
Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff.
USA only shipping on this sale.
PJRC is partnering with @sparkfun.bsky.social for manufacturing of all Teensy products.
We’re taking step with 2 main goals.
1: SparkFun has the manufacturing needed for Teensy's growth.
2: PJRC can renew focus on software & community.
pjrc.com/sparkfun-to-...
news.sparkfun.com/13308
We’re taking step with 2 main goals.
1: SparkFun has the manufacturing needed for Teensy's growth.
2: PJRC can renew focus on software & community.
pjrc.com/sparkfun-to-...
news.sparkfun.com/13308
SparkFun To Manufacture Teensy
pjrc.com
March 13, 2025 at 6:26 PM
PJRC is partnering with @sparkfun.bsky.social for manufacturing of all Teensy products.
We’re taking step with 2 main goals.
1: SparkFun has the manufacturing needed for Teensy's growth.
2: PJRC can renew focus on software & community.
pjrc.com/sparkfun-to-...
news.sparkfun.com/13308
We’re taking step with 2 main goals.
1: SparkFun has the manufacturing needed for Teensy's growth.
2: PJRC can renew focus on software & community.
pjrc.com/sparkfun-to-...
news.sparkfun.com/13308
If the stock markets crash Monday, will DEI be at fault?
February 3, 2025 at 2:26 AM
If the stock markets crash Monday, will DEI be at fault?
Reposted by Paul Stoffregen
New Years resolution... At the Teardown conference @aliegg.bsky.social suggested I ought to buy an iFixit battery. It arrived in July, but has sat on my shelf since, 'cause the phone still works. Going to actually install it "sometime soon", or at least before Teardown 2025.
January 2, 2025 at 3:13 AM
New Years resolution... At the Teardown conference @aliegg.bsky.social suggested I ought to buy an iFixit battery. It arrived in July, but has sat on my shelf since, 'cause the phone still works. Going to actually install it "sometime soon", or at least before Teardown 2025.
FastLED adds Massive Parallel LED Output on Teensy 4.0 & 4.1 thanks to Kurt Funderburg's ObjectFLED driver. The driver uses non-blocking DMA, so you can can prepare the next frame while the current frame draws. More detail on reddit.
www.reddit.com/r/FastLED/co...
www.reddit.com/r/FastLED/co...
December 29, 2024 at 5:32 PM
FastLED adds Massive Parallel LED Output on Teensy 4.0 & 4.1 thanks to Kurt Funderburg's ObjectFLED driver. The driver uses non-blocking DMA, so you can can prepare the next frame while the current frame draws. More detail on reddit.
www.reddit.com/r/FastLED/co...
www.reddit.com/r/FastLED/co...
Reposted by Paul Stoffregen
It's official! @crowdsupply.bsky.social's Teardown will be returning to the mall in June 2025 and they are still letting me run it.
Keynotes will be Cory Doctorow (author, journalist, activist), Kate Stewart (VP of Embedded at Linux, Zephyr, RTOS) and bunnie Huang (hardware hacker, author).
Keynotes will be Cory Doctorow (author, journalist, activist), Kate Stewart (VP of Embedded at Linux, Zephyr, RTOS) and bunnie Huang (hardware hacker, author).
November 22, 2024 at 7:16 PM
It's official! @crowdsupply.bsky.social's Teardown will be returning to the mall in June 2025 and they are still letting me run it.
Keynotes will be Cory Doctorow (author, journalist, activist), Kate Stewart (VP of Embedded at Linux, Zephyr, RTOS) and bunnie Huang (hardware hacker, author).
Keynotes will be Cory Doctorow (author, journalist, activist), Kate Stewart (VP of Embedded at Linux, Zephyr, RTOS) and bunnie Huang (hardware hacker, author).
PJRC will have a Black Friday sale this year.
Sweet discount on Teensy 4.0 and Audio Shield.
Sale will run Nov 25 to Dec 2, or until inventory allocated to the sale runs out.
Sweet discount on Teensy 4.0 and Audio Shield.
Sale will run Nov 25 to Dec 2, or until inventory allocated to the sale runs out.
November 20, 2024 at 8:53 PM
PJRC will have a Black Friday sale this year.
Sweet discount on Teensy 4.0 and Audio Shield.
Sale will run Nov 25 to Dec 2, or until inventory allocated to the sale runs out.
Sweet discount on Teensy 4.0 and Audio Shield.
Sale will run Nov 25 to Dec 2, or until inventory allocated to the sale runs out.
Let me share with you a narrative of a software bug I just fixed in an all-night session (while still fresh in my mind).
You can see the problem in this video demo, starting at 1:26.
www.youtube.com/watch?v=BOQE...
A deep dive will take several messages, so buckle up...
You can see the problem in this video demo, starting at 1:26.
www.youtube.com/watch?v=BOQE...
A deep dive will take several messages, so buckle up...
MTP Media Detection Test / Demo - Nov 2024
YouTube video by PaulStoffregen
www.youtube.com
November 8, 2024 at 2:38 PM
Let me share with you a narrative of a software bug I just fixed in an all-night session (while still fresh in my mind).
You can see the problem in this video demo, starting at 1:26.
www.youtube.com/watch?v=BOQE...
A deep dive will take several messages, so buckle up...
You can see the problem in this video demo, starting at 1:26.
www.youtube.com/watch?v=BOQE...
A deep dive will take several messages, so buckle up...
Added detection of a variety of timing errors and stats for key WS2812 waveform timing to WS2812Capture.
github.com/PaulStoffreg...
github.com/PaulStoffreg...
October 20, 2024 at 8:27 PM
Added detection of a variety of timing errors and stats for key WS2812 waveform timing to WS2812Capture.
github.com/PaulStoffreg...
github.com/PaulStoffreg...
Been working on a Teensy 4.0 library which can capture and analyze timing of WS2812 LED data.
In this picture, Teensy #4 controls eight WS2812 LEDs while Teensy #6 captures high & low timing of every data bit.
Still work-in-progress, but initial code uploaded to Github.
github.com/PaulStoffreg...
In this picture, Teensy #4 controls eight WS2812 LEDs while Teensy #6 captures high & low timing of every data bit.
Still work-in-progress, but initial code uploaded to Github.
github.com/PaulStoffreg...
October 19, 2024 at 4:45 PM
Been working on a Teensy 4.0 library which can capture and analyze timing of WS2812 LED data.
In this picture, Teensy #4 controls eight WS2812 LEDs while Teensy #6 captures high & low timing of every data bit.
Still work-in-progress, but initial code uploaded to Github.
github.com/PaulStoffreg...
In this picture, Teensy #4 controls eight WS2812 LEDs while Teensy #6 captures high & low timing of every data bit.
Still work-in-progress, but initial code uploaded to Github.
github.com/PaulStoffreg...
Setting up a pair of Raspberry Pi 5s and 2.5gb networking for the ARM 32 & 64 bit builds of Teensy's software. Huge improvements in the build process and copying source from desktop to SBCs too! The old way was always painful. Looking forward to smoother sailing.
September 17, 2024 at 12:08 AM
Setting up a pair of Raspberry Pi 5s and 2.5gb networking for the ARM 32 & 64 bit builds of Teensy's software. Huge improvements in the build process and copying source from desktop to SBCs too! The old way was always painful. Looking forward to smoother sailing.