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
SiLabs BG2B: A Low-Power Bluetooth 6 Chip for Your Next Build
Silicon Labs' new BG2B packs Bluetooth 6, Channel Sounding, and a 1.1uA sleep current into one tiny SoC. Here's what you could prototype with…
esp32 & esp8266
The ESP32-C61-MINI Finally Ships: Budget Wi-Fi 6 for Your Builds
After nearly three years, Espressif's ESP32-C61-MINI is on sale at $10.70 for five, bringing Wi-Fi 6 and Matter to budget maker and student builds.
diy projects
This Giant 16×2 Character Display Runs on an RP2040 and 1,000 LEDs
A maker rebuilt the classic 16×2 character LCD at 7x scale using 1,000+ addressable LEDs and an RP2040 that still speaks I2C to any…
diy projects
A Retro Game Console Crammed Inside an NES Gamepad (ESP32-S2)
Logic Gate Labs squeezed a full ESP32-S2 handheld emulator (and Doom) into an empty NES gamepad shell for about $17. Here is how the…
diy projects
Add Touch ID to Any Mac With a DIY ESP32-S3 Fingerprint Module
A developer built TinyTouch, an open source ESP32-S3 USB module that brings fingerprint unlock to any Mac, no pricey Apple keyboard needed. Here's how…
esp32 & esp8266
Build an ESP32-Driven Robot That Hauls Your Beach Gear on Sand
John Boss built a skid-steer robot from an e-bike rack, two 350W motors, and an ESP32 that follows him across the sand hauling every…
robotics
Aliensense NXS Sends mikroBUS Sensors Down One Robot Cable
Aliensense's NXS hub pushes power, video, and sensor data over a single cable up to 40m, linking mikroBUS Clicks and MIPI cameras to your…
diy projects
Portable Commodore 64: A Raspberry Pi 3 Retro Handheld Build
A Raspberry Pi 3 plus a Pico turns the classic Commodore 64 into a solder-free portable handheld you can wire up and play over…
diy projects
Build a Working Apollo DSKY Replica with Raspberry Pi and Arduino
A maker rebuilt the Apollo DSKY with a Raspberry Pi, Arduinos, and open-source VirtualAGC. Every CAD file and schematic is free, so you can…
uncategorized
Build an ESP32 Water Tank Controller With an Ultrasonic Sensor
An ESP32, an ultrasonic sensor, and a relay turn a manual rooftop water pump into a hands-off system that fills the tank and stops…
diy projects
Build a Touchless ESP32 Theremin With Capacitive Touch Sensing
An ESP32 turns hand distance into music with its capacitive touch pins and built-in DAC, no tuned oscillators or analog coils needed. Here's the…
diy projects
Build a Handheld Commodore 64 on a Raspberry Pi 3 and Pico
YouTuber Retro Dad crammed a full Commodore 64 into a Raspberry Pi 3 handheld, with a Pi Pico bridging authentic 9-pin joystick ports. No…