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
Pinch: A Fingertip-Sized 32-Bit Arduino-Compatible Dev Board
The pinch crams a 32-bit Arduino-compatible board onto something the size of a USB-C plug: 15 GPIO pins, native USB, and a $16 pre-order.
arduino
Weekend Build: A Self-Cleaning Solar Tracker on Arduino UNO Q
An Arduino UNO Q panel that tracks the sun, vibrates off its own dust, and hides from storms. Fully open source, and a solid…
diy projects
Porting Apache NuttX to the Adafruit Fruit Jam to Run Doom
A forum maker ported Apache NuttX to the Adafruit Fruit Jam, adding USB input and a DVI framebuffer to run LVGL demos and even…
raspberry pi
Name-Your-Price Raspberry Pi Press Bundle: 16 Pico & HAT Books
Raspberry Pi Press put 16 Pico, HAT, and AI e-books on Humble Bundle at name-your-price. Here is what each title teaches and where to…
esp32 & esp8266
Solar Devboard V1: An ESP32-C6 Sensor Node That Charges Itself
Andrei Pokotylo's Solar Devboard V1 packs an ESP32-C6 and a BQ25186 charger so remote sensor nodes top up their own battery from an 18…
diy projects
Brass and a Raspberry Pi 5: A Handheld PC You Build Yourself
Maker Huy Vector bent brass tubes into a frame for a Raspberry Pi 5 handheld with a 4-inch HDMI screen and an I2C keyboard.…
esp32 & esp8266
Build a Solar-Powered IoT Node with This ESP32-C6 Board
An ESP32-C6 dev board built for solar IoT: BQ25186 charging, reverse-voltage protection, QWIIC I2C, and ten GPIO pins for cable-free sensor nodes.
esp32 & esp8266
Focus: The Open-Source UI Framework Behind an ESP32 E-Reader
Focus is an open-source C++ framework that brings app-style menus, view controllers, and safe scheduling to the ESP32 and other tiny-RAM boards.
diy projects
Build a Rotating UV Flame Scanner With the UVTRON R2868
A solar-blind UVTRON R2868 phototube on a spinning platform spots flames through dense brush from 15 meters. Here's the parts list and wiring.
raspberry pi
QuadRF Turns a Raspberry Pi 5 Into a Wi-Fi-Seeing RF Camera
QuadRF is an open source phased-array kit that turns a Raspberry Pi 5 into a real-time RF camera, mapping Wi-Fi and wireless transmitters in…
diy projects
Duality Canvas: Build a Wall-Sized ESP32 LED Display With WLED
Andy Huot's Duality Canvas tiles 16x16 addressable-LED PCB panels into a wall-sized display you can scale to any size, driven by an ESP32 and…
diy projects
A Palm-Sized Battery Bench Power Supply Built on the ATtiny3216
Ben Makes Everything built a palm-sized battery bench power supply with 0.8V to 22V output, USB-C PD charging, and an ATtiny3216 running the show.