news & releases
Circuit.Rocks Sponsors SparkFest 2026: GDG PUP Hackathon on July 9
Circuit.Rocks is an official hardware sponsor of SparkFest 2026 - the Google Developer Group PUP hackathon on July 9 at PUP Main Campus, Bulwagang…
iot & smart home
WeatherXM D2 Mesh: A Solar LoRa Weather Station With No Wi-Fi
A solar weather station that reports over a LoRa mesh instead of Wi-Fi or cellular, plus how to build a cheap ESP32 version of…
arduino
An Arduino Nano ESP32 Robot Flips All 666 Pixels of This Display
Most flip-disc displays need one solenoid per pixel. This 666-tile panel uses a single Arduino Nano ESP32 gantry robot that prods each tile instead.
arduino
Never Buy the Same L298N Twice: An Arduino UNO Q Parts Tracker
A maker got tired of owning eight identical motor drivers, so he built an Arduino UNO Q inventory tracker that answers one question: do…
diy projects
A Parody Apple Laptop Reborn: The RP2350 Mactini Actually Works
A 20-year-old Apple parody became real hardware: an RP2350 running FreeRTOS, DMA-driven graphics and an alphabet you tap out on one capacitive pad.
diy projects
Build a Digital Nose: an SGP30 Sensor That Sniffs Out Spoiled Milk
Your nose gives a yes-or-no answer. An SGP30 gas sensor gives you a number you can plot, and the whole freshness checker is a…
diy projects
A XIAO ESP32-S3 Clock Hiding Inside a Fake Linksys WRT Router
Glen Akins rebuilt the mid-2000s Linksys WRT router as an NTP desk clock, swapping a Raspberry Pi Zero 2 W for a 21 mm…
news & releases
Microduck: A $399 Open-Source Biped Robot for Physical AI Labs
A 25 cm biped with 15 degrees of freedom, an 8x8 ToF LiDAR and a $399 preorder price. Here is what Microduck offers student…
diy projects
TinyML on a Raspberry Pi 3: LesionIQ Scans Skin Lesions Offline
A PhD student in Edinburgh fit a skin-lesion classifier onto a Raspberry Pi 3 with no internet at all. Here is how that constraint…
diy projects
How ExpressLRS Squeezes Kilometers Out of a 1-Watt ESP32 Link
Four open-source ELRS receivers, an SX1280 LoRa radio, and one 50-ohm trace: the RF design tricks that keep a 1-watt link locked kilometers out.
company life
300 Hours of Growth: Celebrating our Colegio de Muntinlupa Interns’ OJT Completion
The goal of Circuitrocks Philippines has never changed, which is to inspire every maker or builder. It can be in terms of supplying components…
esp32 & esp8266
An ESP32-P4 Runs Doom While Claude Sonnet Fumbles the Controls
A 51-ray depth scan, an ASCII automap, and a WebSocket that freezes the game between moves. That is everything Claude Sonnet gets to survive…
raspberry pi
LiteRT on Raspberry Pi 5: Run Gemma and Vision Models Locally
Google's LiteRT CLI puts Gemma and EfficientNet on a Raspberry Pi 5 with three commands. Here is the setup, the file sizes, and the…