diy projects
Hidden Lockbox Opens Only to a Secret Magnet Gesture
No keyhole, no keypad: a Teensy 4.1 and an 8x8 Hall-sensor grid unlock this wooden box only when you trace the right magnetic gesture.
diy projects
This LED Staff Turns a Teensy 4.1 Into a Handheld PoV Display
A Teensy 4.1, a strip of addressable LEDs and an IMU turn a hand-spun staff into a persistence-of-vision display. Here is how to build…
diy projects
Raspberry Pi Cyberdeck Turns a Teensy Into a Pocket Music Studio
A Raspberry Pi 4 and Teensy 4.1 team up as a pocket M8-tracker music workstation you can build in a single weekend, screen and…
diy projects
AR4 Mark 5: This Open-Source 6-Axis Robot Arm Is Finally Done
Chris Annin's open-source AR4 6-axis robot arm just got its final Mark 5 revision, swapping in Hall effect sensors and shipping a fresh build…