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Paul Stoffregen

@paulstoffregen

Electronics, Teensy, Arduino, Making, DIY Tech he/him

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03.07.2023
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Latest posts by Paul Stoffregen @paulstoffregen

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Researchers from Prof. Joohyung Kim's KIMLAB at the University of Illinois Urbana-Champaign (UIUC) used #Teensy to develop a low-cost, easy-to-reproduce "pneumatic skin" that gives robots a sense of touch

www.pjrc.com/pneumatic-ro...

05.03.2026 16:36 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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VoiceBotX has created VoiceBot, a second language fluency-builder in the form of a #Teensy powered robot

www.pjrc.com/voicebot-lan...

04.03.2026 15:47 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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OH! is a Teensy-based sculpture created by brendanmatkin and the Tangible team, to control lights on the Telus World of Science's geodesic dome via a 1:60 scale model of the building, covered with 240 sensors, and connected to its full-scale counterpart by an LTE router

www.pjrc.com/science-worl...

02.03.2026 17:10 πŸ‘ 9 πŸ” 0 πŸ’¬ 5 πŸ“Œ 0
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After several years of experimentation, JonathanZ has released a #Teensy based drone synth pedal using S. Christian Collins’ GeneralUser GS SoundFont bank

www.pjrc.com/drone-synth-...

26.02.2026 16:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

systemd quickly restarts a flawed daemon I wrote ~15 years ago... so well that I've never needed to bother with fixing my old buggy code. So I say good riddance to whatever initd & pile of shell scripts that regularly fell down dealing with my crappy program.

26.02.2026 00:32 πŸ‘ 9 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Yeah, sadly this appears at the bottom of their website.

24.02.2026 21:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Looks like they discontinued due to a thread of patent infringement.

I've slightly edited this and updated to include the blog link. Will likely show up this post deleted and the edited copy as a new post

24.02.2026 21:33 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Cam Chaney’s #Teensy powered Compass handheld #CNC router combines the fidelity of CNC with the flexibility of a hand tool that traverses the workpiece under human guidance

www.pjrc.com/diy-handheld...

24.02.2026 21:31 πŸ‘ 5 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Black circuit board with Teensy 4.1, four chips, 4 BNC connectors (3 with coax cables attached)

Black circuit board with Teensy 4.1, four chips, 4 BNC connectors (3 with coax cables attached)

dukeblue219 has shared a retrospective of NASA’s use of #Teensy over the years, from testing planar NAND flash at the Lawrence Berkeley National Lab, to facilitating research with an 8 Tb, 96-layer 3D NAND flash

www.pjrc.com/nasa-loves-t...

23.02.2026 14:11 πŸ‘ 14 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Open Source DIY Thermocam V3 Teensy-based thermal imaging platform brings thermal analysis to the masses

www.pjrc.com/diy-thermocam/

19.02.2026 21:13 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Yup, 32MB

18.02.2026 14:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Partial screenshot of Arduino IDE with Teensy software 1.60 visible in Boards Manager

Partial screenshot of Arduino IDE with Teensy software 1.60 visible in Boards Manager

Teensy software 1.60 released, larger PSRAM, Lockable Teensy Plugin, I2C, SoftwareSerial, NKRO Keyboard, and many fixes & improvements

www.pjrc.com/teensyduino-...

18.02.2026 13:54 πŸ‘ 18 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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JarkkoL has ported their tiled software rasterizer to #Teensy and ILI9341 using just 27kb of RAM, with 4,000 triangles stored in flash, and featuring asynchronous DMA transfer, cluster visibility culling, and texture support.

www.pjrc.com/3d-rendering/

17.02.2026 15:41 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Many Teensy enthusiasts are so passionate about audio synthesis, you might say they could write a book on it. In the case of Ken Wessen, this is literally the case!

pjrc.com/constructive...

thewessens.net/synthbook/

16.02.2026 20:23 πŸ‘ 17 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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coelacant1 has brought real-time rendering and animation to Teensy with the ProtoTracer engine for LED matrixes

pjrc.com/prototracer-...

12.02.2026 21:40 πŸ‘ 49 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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DJ Harrigan, aka Mr. Volt, has created a #Teensy powered dice box with a twist.

pjrc.com/magic-dice-b...

www.youtube.com/watch?v=2MN4...

11.02.2026 15:46 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Andrei Kudryavtsev of DeftAudio created a 8x14 MIDI and audio interface using Teensy 4.1. It's available as a kit at Tindie and source code on Github.

www.pjrc.com/8x14-1u-midi...

www.tindie.com/products/def...

27.01.2026 22:07 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Ordered my ticket, just now!

24.01.2026 00:31 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I always love it when an OSH Park purple PCB package arrives!

15.01.2026 05:41 πŸ‘ 11 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Evan Rust used SparkFun MicroMod Teensy with Edge Impulse software to achieve 92.7% keyword recognition accuracy.

www.pjrc.com/audio-keywor...

www.hackster.io/gatoninja236...

30.12.2025 20:07 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Wow, that's so seriously "in the zone" play!

06.12.2025 17:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Do both have same color gradient?

Kinda wonder how differing 2D variation of the gradients would look.

02.12.2025 15:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

As a general rule of thumb, area where same-direction loops don't overlap will radiate RF energy. So if you get into optimizing the current loops, don't focus on minimizing total size. As long as they're in the same direction, focus your effort on keep non-overlap as small as you can.

21.11.2025 20:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Usually 3 goals. In order of importance:

1: Both loops go in same direction. Good counterclockwise, good.

2: Loops similar size. If you can route U2 pin 5 underneath, consider swapping placement of C3 and U2.

3: Feedback resistors outside of the loops. Maybe move them below C11.

21.11.2025 20:44 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Sure, here my best guess as the 2 paths current ought to flow. Assuming there is a ground plane or trace not shown for current flow between C3 and C11.

21.11.2025 20:36 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
A metal tube with a bunch of electronics cramed inside

A metal tube with a bunch of electronics cramed inside

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.

19.10.2025 01:04 πŸ‘ 28 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0

Put my old 2015 MacBook Air (13-inch screen) on a scale.

It weighs 1.32kg.

23.09.2025 07:32 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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...

19.08.2025 19:15 πŸ‘ 8 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Maybe KVMs are such a small niche market that nobody designing silicon really puts any love into them?

Also maybe we got lucky from the larger market of security camera monitoring, a 4K60 multiview chip made its way to a KVM?

I'm just happy to finally get a good KVM.

19.08.2025 03:10 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

No idea about how it does with special mice & keyboards.

I can tell you my trashcan Mac's HDMI turned out to be only HDMI 1.4 with 1080p max. It automatically upscales that to 4K60, but the result isn't beautiful. I have a Thunderbolt2/DP to HMDI 4K60 converter coming tomorrow.

19.08.2025 00:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0