Recent Blog Posts
Universal Data Acquisition and Logging
PJRC forum member MarkusGruen has developed RTMC (Real Time Measure and Control), a universal data acquisition, logging and I/O system. The Teensy 4.1-based platform enables data capture from any I2C, SPI, RS-232, or analog sensor.
Data can be sampled from eight sensors simultaneously at up to 4.4KHz, then transmitted […]
Hamamatsu CCD Controller
PJRC forum member DrM is back with another CCD (charge-coupled device) project, this time a controller for the Hamamatsu S11639-01 linear CCD sensor, with the aim of making high-end scientific instruments more affordable and accessible.
A GitHub repo provides KiCad files and firmware for the sensor/controller set. Some […]
Ball-Seeking Hoop
YouTuber Stuff Made Here has shared the latest evolution of his intelligent basketball hoops, this time in the form of the ball-seeking hoop.
Powered by a Teensy 3.6, this robotic backboard moves through three-dimensional space to ensure every shot ends with a satisfying swish.
A specially modified basketball’s position is […]
Beatmaker’s Sketchbook Sampler/Sequencer
After more than a year of development, sucofunk has released the Beatmaker’s Sketchbook, a Teensy 4.1-based sampler and sequencer. Designed as an open-source alternative to OP-1s and MPCs, it follows a “Sample, Sketch, Arrange, Play” workflow to help take your ideas from simple noodling to live performances.
In […]
OLIA – Open-Source Digital Lock-In Amplifier
Andrew J. Harvie and John C. de Mello have created OLIA, an open-source digital lock-in amplifier. Digital lock-in is a method for isolating weak signals to facilitate measurement amongst background noise, which is processed away via digital signal processing (DSP).
The Open Lock-In Amplifier (OLIA) is a Teensy 4.0-based […]
Ottopot MIDI Controller
Gero Takke has created the Ottopot, a MIDI controller with “nothing but 8 dials.” But what dials they are! 14-bit MIDI CCs (changes) with a 1:1 mapping to physical movement provides an experience more akin to analog pots, but with continuous rotation.
Gero’s controller exceeds the typical resolution of […]
LED Lines Algorithm
The technology we experience as children can have a lasting impression. An algorithm that Mate Steinforth saw at a relative’s house had such an impression that three decades later it drove the creation of a Teensy-based realization in LED form.
Using the SmartLED Shield for Teensy 4 and […]
Polyphonic Digital/Analog Synth
Back in 2017, Paul designed a board for the Cirrus Logic CS42448 chip, which provides gobs of high-quality audio I/O, and shared it on OSH Park. PJRC forum member tubelab.com picked up a few of them, and created a 6-voice polyphonic hybrid digital/analog synth.
The eventual goal […]
Dynamic Crankshaft Balancer
Ash Powers long dreamed of creating a crankshaft balancing rig, and through a combination of mechanical, electrical, electronic, and software expertise, his dream is now a reality.
The system is built around a Teensy 4.0, connected via gain amplifiers to a pair of load cells harvested from cheap digital […]
Pneumatic Robotic Skin
Researchers from Prof. Joohyung Kim’s KIMLAB (Kinetic Intelligent Machine LAB) at the University of Illinois Urbana-Champaign (UIUC) have developed a low-cost, easy-to-reproduce “pneumatic skin” that gives robots a sense of touch.
The solution consists of a 3d-printed TPU structure, attached to the robot arm with magnets. Eleven of these […]
VoiceBot Language Helper
PJRC forum member VoiceBotX has created VoiceBot, a second language fluency-builder in the form of a Teensy 4.1-powered robot.
Contained in the 3d-printed shell is a Teensy 4.1 and Audio Adaptor Board, as well as haptic motors and drivers, some extra RAM, and an 8×8 RGB LED matrix. […]
Science World Building Model Lighting
OH! is a sculpture created by PJRC forum member brendanmatkin and the Tangible team, which controls the lights on the Telus World of Science’s geodesic dome.
Based on the Teensy 3.5, OH! is a 1:60 scale model of the building, covered with 240 sensors, and connected to its […]
Drone Synth with Soundfonts
After several years of experimentation, PJRC forum user JonathanZ has released a Teensy 4.1-based drone synth pedal using S. Christian Collins’ GeneralUser GS SoundFont bank.
Built around the Teensy Audio Adaptor Board and a 2.8″ ILI9341 touchscreen, the project leverages Kris Kasprzak’s Slider Controls for Touchscreen Displays library […]
DIY Handheld CNC Router
When most people think of CNC machines, they think of big, loud, messy, somewhat dangerous tools that take up a large amount of space. Traditional woodworking tools are often far smaller and more maneuverable, but lack the precision of Computer Numerical Control.
Cam Chaney’s open-source Compass handheld CNC router […]
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