Recent Blog Posts
Video Control Surface
YouTuber Zack Freedman wanted to improve his video-editing workflow without spending $100s on new hardware, so he grabbed a Teensy and committed to a one-weekend time limit over which to build his own control surface.
Essentially three normal and one giant knob plus a weird mechanical keyboard, the project is mostly […]
Knife Throwing Machine
Quint BUILDs is known for impressive, entertaining YouTube videos. Having previously relied on Arduino boards for microcontroller projects, his Knife Throwing Machine presented a new challenge due to the real-time calculations required to launch a knife at exactly the right trajectory for it to nail its target tip-first.
This […]
Breadboard Drum Machine
Sebastian Tomczak, aka little-scale, has built a homemade drum machine around the Teensy 3.6, entirely on a solderless breadboard!
Sixteen button/LED pairs for step sequencing, two 74HC595 shift registers, five further buttons/LEDs for drum/pattern selection and pattern length, and a potentiometer for tempo control are all intricately wired to a […]
Tektronix DPO USB Interface
1973’s Tektronix Digital Processing Oscilloscope (or “DPO” for short) was comprised of a 7704A ‘scope and a P7001 digitizer, processor, and memory unit. The processing unit could in turn be connected to an external computer, such as the PDP–11 16-bit minicomputer from Digital Equipment Corporation.
This would have been a […]
Original Xbox Controller to USB
There may not be many fans of the original Xbox controller (aka “The Duke”), but Tom Mason, aka wheybags on GitHub, is a big enough fan to take on the task of dragging the infamous behemoth into another generation of gaming with this USB adapter.
Based on the Teensy 4.1, […]
Neutrik etherCON Adapter for Teensy 4.1
Tom Magnier created this alternate Ethernet adaptor using using Neutrik etherCON adapter.
While the standard Teensy 4.1 board provides Ethernet via Ti’s DP83825I PHY, we didn’t want to increase the footprint and BOM with a big ol’ RJ45 MagJack, which is why we sell a separate Ethernet kit for […]
OpenGalvo
DanielO initially posted with a request for help generating a 10MHz clock signal. What emerged 25 posts later was the release of OpenGalvo, the self-described “minimalistic firmware for processing GCode commands (into the) XY2-100 protocol.”
The reason for doing this? Turning a mirror-based digital galvo into a (potentially unsafe, highly […]
Generative Sequencer
Nick Monk (Snowsh) created a monster PCB known simply as “The Machine.” The Teensy 4.1-based behemoth is a generative synth with additional capabilities via expansion modules.
A combination of WS2812 RGB LEDs and OLED displays form the UI, with copious potentiometers and buttons providing the interface. While not much […]
Zoom Phone
Interaction designer Dice Yukita to explore new — or rather old — paradigms for drudgingly routinized daily work from home meetings with his Zoom Phone.
By hacking a commodity USB headset into a traditional telephone handset, plus incorporating the HID capabilities of the Teensy 4.0 and some Swiftbar scripting, Dice was […]
JawsFX – Guitar Pedal With Shark Proximity Looping
What do you get for the Jaws fan who has everything? Pio’s (HexeguitarDIY) custom Jaws-themed guitar effects pedal with “shark proximity” looping feature! Like the classic movie, result is terrifyingly impressive!
A custom PCB houses an NXP SGTL5000 audio codec and filters, plus a TI CD4053 MUX/DEMUX for […]
Toslink Delayer To Sync Audio
Andy Haus ran into an annoying issue with his Amazon Echo Link music streaming devices: despite being connected to their respective host speaker systems via TOSLINK optical cables, one was lagging behind the other, meaning music played over both was out of sync.
Since the ~200ms delay was being caused […]
Modernized FX-300 Jackal TV/Radio
Tom Granger picked up a couple of FX-300s in a state where they weren’t actually doing as much as turning on, which was the starting point for an incredible modernization.
Sony’s 1978 FX-300 Jackal was somewhat of a technological marvel: AM/FM radio, cassette player/recorder, and mini CRT TV, all […]
Giant Darth Vader Minifig
Last time we saw The Sketchy Maker on the PJRC blog, it was in the form of a giant 3d-printed LEGO Luke Skywalker, in celebration of Star Wars day. Now they’re back, but have taken a turn to the dark side, with a giant Darth Vader minifigure.
The more […]
Vimana – Multi-track MIDI Step Sequencer
After four years in development, Guilherme Martins has released Vimana, a multi-track MIDI step sequencer. Vimana is designed to be open and flexible in terms of software and UI.
Vimana features 16 tracks, with a main clock and division/multiplication per track. Step parameters […]
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