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…
microcontrollers
BrainBoard1500 Puts Neuromorphic AI on an Arduino Nicla Board
BrainChip's AKD1500 accelerator lands on an Arduino Nicla footprint with 32 neural cores, 4 MB flash, and a current monitor for measuring the power…
diy projects
Teardown 2026: 450 Hardware Hackers Took Over Jupiter Hotel
Crowd Supply's Teardown 2026 packed 41 talks and 47 demo tables into one hotel. Here are the embedded, USB-C PD, and ESP32 bits worth…
microcontrollers
Build a $29 Open-Source STM32F405 FOC Driver for BLDC Motors
Sirojudin Munir's SF-Motion FOC driver runs BLDC motors on an STM32F405, costs about $28.58 in parts, and ships KiCad files under the MIT license.
diy projects
This Arduino Nano-Sized Board Packs a 300 MHz Cortex-M7 Chip
Magmabow squeezed a 300 MHz ATSAME70 Cortex-M7 into an Arduino Nano footprint, and the BGA routing trick he used is worth stealing.
microcontrollers
MIT-Licensed STM32C5 BluePill Clone Runs Oberon-2 Instead of C
A 144MHz Cortex-M33 in BluePill form, MIT-licensed with KiCad files published, and it speaks Oberon-2 as fluently as it speaks C.
microcontrollers
Axiometa’s AX22 Shield Turns Seeed XIAO Into a Solderless Rig
Two AX22 ports, a XIAO header, and no jumper wires: Axiometa's $9.99 shield swaps breadboard spaghetti for connectors that survive a whole semester.
raspberry pi
Build a Pocket Route Finder on Raspberry Pi Pico with Dijkstra
A Pico, an SPI LCD and about 60 lines of MicroPython turn Dijkstra's 1956 algorithm into a handheld that finds the cheapest route between…
diy projects
This $155 Open-Source 6-DoF Stylus Replaces $5,000 Mocap Rigs
Aalto University's open-source Lighthouse Stylus tracks position and tilt to under 1 mm for about $155 in parts, against $5,000+ for commercial mocap.
microcontrollers
WCH’s CH32V407 Brings Vector Extensions to a $2.40 RISC-V MCU
A 200MHz RISC-V microcontroller with vector extensions, 8MB of optional PSRAM, and a $2.40 price tag. Here is what the CH32V407 can actually do.
diy projects
Reverse Engineering a Cotton Candy Machine’s Robot Brain
A $6,400 cotton candy vending machine refused to run offline. One maker used ADB, SQLite and a patched APK to cut the cord and…
iot & smart home
Run Gemma AI Offline on a Raspberry Pi 5 with Google’s LiteRT
Google's LiteRT runs Gemma models on a Raspberry Pi 5 at 99 tokens/sec prefill in 1432 MB of RAM, with no cloud and no…
diy projects
Motion-Reactive LED Devil Horns Built on an RP2040 Prop Feather
Paper-mache horns lined with 4 mm NeoPixel strip, an RP2040 Prop-Maker Feather reading your head gestures, and two animations that answer with fire.