sensors & modules
Adafruit’s 128×64 RGB LED Matrix With Eye-Catching 2mm Pitch
A 128x64 RGB LED matrix with 2mm pitch and 8,192 pixels - great for video walls, dashboards, and dazzling builds with the right driver…
microcontrollers
CircuitPython 10.2.1 Released: Bugfixes and MagTag 2025 Display Boost
CircuitPython 10.2.1 lands with crucial display crash fixes, improved MagTag 2025 support, and refreshed frozen modules across the stable ports.
uncategorized
Renter-Safe DIY Smart Curtains with ESP32, AS5600 & Home Assistant
An ESP32, an AS5600 angle sensor, and clever 3D-printed gears turn ordinary curtains into a removable, renter-safe smart-home upgrade.
3d printing
SUNLU Filament Now at Circuit.Rocks: PLA, PETG & PLA+ 2.0 Spools
SUNLU filament is now stocked at Circuit.Rocks. Grab PLA, PLA+ 2.0, or PETG 1kg spools at maker-friendly prices, ready for your next FDM print.
microcontrollers
RP2350 Roundup: 6 Standout Pico-Style Boards Worth a Look in 2026
From AMOLED touchscreens to Ethernet jacks, six standout RP2350 boards push the Raspberry Pi Pico 2 chip into wearables, robotics, and IoT builds.
arduino
DIY Camera Slider from a Dead 3D Printer and an Arduino UNO R3
Maker TheHyperFix turned a retired 3D printer into a motorized three-axis camera slider — powered by an Arduino UNO R3 and a CNC shield.…
3d printing
Energy Core Lamp: 3D Printed Sci-Fi Reactor Light with COB LEDs
Build a glowing sci-fi reactor for your desk: a fully 3D-printed enclosure paired with a COB LED strip creates an even, dotless ambient glow.
arduino
ROBO CORE+ Brings a Built-In Lab to Arduino-Compatible Prototyping
Meet ROBO CORE+, an Arduino UNO-compatible board packing onboard Wi-Fi, a 12-bit DAC, and a browser-based oscilloscope you can run right from your laptop.
3d printing
Build a 3D-Printed Tetris LED Matrix with Feather RP2040 PropMaker
Play Tetris on a 3D-printed 9x13 NeoPixel matrix powered by an Adafruit Feather RP2040 PropMaker and a STEMMA QT gamepad. Portable retro fun.
arduino
Arduino UNO R4 WiFi Slot Machine That Pays Cats in Treats
Pull the lever, line up three reels, and a treat drops out. CircuitCindy's Arduino UNO R4 WiFi slot machine turns kitty dinner into a…
3d printing
Cassagotchi: A 3D-Printed Arduino Nano Tamagotchi Pocket Pet
Maker Cass turned an Arduino Nano, a tiny OLED, three buttons, and a 3D-printed egg into a fully working Tamagotchi clone you can build…
3d printers
FlexiHook: A Print-in-Place Foldable Coat Hook You Can 3D Print
Sometimes the cleverest maker projects don’t need a single wire — just a good design and a well-tuned 3D printer. That’s the spirit behind…