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…
esp32 & esp8266
ESPHome Firmware Cuts the Litter-Robot 4 Free From the Cloud
A PIC runs the motors, an ESP32 just bridges Wi-Fi to UART. Reflash that ESP32 with ESPHome and the litter box answers to Home…
diy projects
Build Your Own Cyberdeck: A Raspberry Pi 5 Power Budget Guide
Raspberry Pi's cyberdeck guide breaks the build into brains, peripherals, power and case, with the 28W power maths most first decks get wrong.
microcontrollers
RFGEN44: An Open 4.4GHz RF Signal Generator on a PIC16
CircuitValley's RFGEN44 pairs a PIC16 with an ADF4351 to sweep 35MHz to 4.4GHz from a 65g box. Here's how to breadboard the same idea…
diy projects
A Homebrew Motorola 68000 Gets Two Working PCI Slots at 10 MHz
A 1979 CPU and a 1990s bus, wired together by hand: 10 MHz 68000, an FPGA host bridge, and PCI graphics and Ethernet cards…
robotics
Ice Dart: The Drone That Spikes Itself Onto a Drifting Iceberg
Canadian roboticists built a quadcopter that lands on slippery icebergs, drives retractable spines into the ice, and hangs on at a 60-degree tilt.
diy projects
Three Corroded WiiMotes, One Working Controller and an ESP32-S3
Three bug-infested, battery-acid-ruined WiiMotes went into the teardown. One working controller came out. Here is the cleanup chemistry and the I2C bus behind it.
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…
news & releases
NVIDIA Retires Jetson Xavier: What ECE Students Should Buy Now
NVIDIA set a July 2027 end of life for every Jetson Xavier module. Here is what that means for your capstone build, and which…
diy projects
Clough42’s GPS Clock Spins Its Numbers with a Pico and TMC2208
A GPS module, a Raspberry Pi Pico, and two TMC2208 drivers spin machined wheels to show time that never needs setting. Here is how…
diy projects
PSU-EXT Makes Any Bench Power Supply Programmable via ESP32-S3
An open source ESP32-S3 box adds SCPI control, live current charts and protection limits to any 0-25 V bench supply, no teardown required.
raspberry pi
HIRO Gen 2: A Raspberry Pi Pico 2 Spider Robot Kit You Wire Yourself
Takamori Robot's HIRO Gen 2 moves to the RP2350 Pico 2, with four SG-90 servos, an MPU-6050 IMU and wiring you do yourself in…
news & releases
Adafruit GP8403 I2C DAC Pushes Analog Output All the Way to 10V
Most DACs cap out at 5V. The GP8403 breakout boosts to a real 0-10V analog output over I2C, which unblocks fan drivers, bias rails…