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…
arduino
How These DIY Robot Legs Walk on an Arduino Mega 2560
Maker Oliver Paff built a working pair of walking humanoid robot legs using an Arduino Mega 2560, a PCA9685 driver, and eight hobby servos.…
raspberry pi
QuadBoat: Raspberry Pi Spider Robot That Rescues Swimmers
QuadBoat is a spider-inspired rescue robot that pulls drowning swimmers from the water, run by a Raspberry Pi 4 and a cluster of Arduino…
esp32 & esp8266
Get Full-HD Video From a Raspberry Pi Pico or ESP32 Over USB
A new library pushes full-HD 1920x1080 video at 60Hz from a Raspberry Pi Pico or ESP32 using a $20 USB display adapter and just…
microcontrollers
SensWear Puts an Open Source Wearable Stack on the nRF54L15
SensWear bundles an nRF54L15 board, swappable PPG, temperature and touch sensor modules, Zephyr firmware and open SDKs to fast-track wearable prototypes.
diy projects
Open Sauce 2026: Maker Builds You Can Recreate This Weekend
Seven takeaways from Open Sauce 2026, plus how to recreate the show floor's cleverest ESP32 and Raspberry Pi builds on your own desk this…
microcontrollers
ChronoWatch X2040: An RP2040 Smartwatch That Just Tells Time
An RP2040 and a Waveshare round touchscreen become a distraction-free smartwatch, coded in C on the Pico SDK with custom touch handling and swappable…
esp32 & esp8266
Build a Buzzing Hazard-Alert Wearable With an ESP32 and Gas Sensor
NC State's solar-powered patch buzzes when it senses toxic gas. Here's how to build a simpler ESP32 hazard-alert wearable this weekend.
news & releases
A NIR Wearable Patch That Watches the Brain Clean Itself
Georgia Tech's sub-centimeter forehead patch uses near-infrared light and a 110 mAh battery to track the brain's nightly glymphatic cleanup at home.
esp32 & esp8266
Open RC Spotter: An ESP32 Data Logger for RC Car Racing
Open RC Spotter is an open-source ESP32 data logger that records GPS, IMU, throttle, and temperature from your RC car for pro-level lap analysis.
diy projects
Building a Handheld Commodore 64 on a Raspberry Pi 3 and Pico
Retro Dad packed a full Commodore 64 into a Raspberry Pi 3 handheld, with real joystick ports, a Pico signal bridge, and no soldering…
esp32 & esp8266
M5Stack PowerHub: An ESP32 Dev Kit That Smartly Manages Power
M5Stack's PowerHub pairs an ESP32 with an STM32 coprocessor and INA226 sensors to measure and switch power per channel, all from a Sony NP-F550…
diy projects
Build a Spinning Mechanical TV with a Raspberry Pi Pico
A Raspberry Pi Pico, an A4988 stepper driver, and five LEDs turn a spinning pin-holed disk into a real 20-row video display. Here is…