microcontrollers
SPIDriver Quattro: A USB SPI Debugger With a Built-In Screen
Debugging SPI blind is painful. The SPIDriver Quattro adds a live display, 0.1 mA current sensing, and quad-SPI support so you can see what…
diy projects
30 ATtiny412 Chips Recreate a 1928 Bicycle-Chain Number Sieve
Maker KB Sriram rebuilt a 1928 mechanical number sieve using 30 ATtiny412 chips and an RP2040, and the century-old math still checks out perfectly.
microcontrollers
CircuitPython 11.0.0-alpha.1 Adds RP2350 Sleep Alarms
CircuitPython 11.0.0-alpha.1 adds RP2350 deep-sleep alarms, wake-on-pin support, and faster USB. Here's what changed and how to flash it this weekend.
microcontrollers
Overclocked RP2350 Pushes 1080p DVI Video With No Framebuffer
A Pico-class chip driving 1920x1080 over DVI, with 520 KB of RAM and no framebuffer. Here is the overclock, the scanline trick, and the…
diy projects
Build a Pocket Signal Generator With the AVR16EB28 and an OLED
An AVR16EB28, a 4.194304 MHz crystal and a spare pair of I/O lines make a 2 Hz to 33 MHz square-wave signal generator that…
microcontrollers
Seeed XIAO SAMD21 Plus and RP2040 Plus Double the GPIO Count
Seeed kept the postage-stamp footprint but pushed the XIAO SAMD21 to 30 GPIO and the RP2040 to 29, with onboard battery charging from $4.90.
microcontrollers
Olimex’s Neo6502kbd Hides a Real MOS 6502 Inside a 50-Euro Keyboard
Olimex put a genuine WDC W65C02 under a wedge-shaped keyboard, paired it with an RP2040 for video and USB, and priced the Apple II…
arduino
Arduino VENTUNO Q Runs a Vision Model on a Robot Arm
A $299 Arduino VENTUNO Q runs a vision-language-action model on-board, teaching an SO-101 robot arm to pick and place from just 50 demonstrations.
microcontrollers
Someone Squeezed a Generative AI Image Model Onto a $1 RP2350
Five seconds, 520 KB of RAM and about a dollar of silicon: the RP2350 inside the Raspberry Pi Pico 2 is now generating 128x128…
arduino
Arduino’s Zephyr RTOS Core Hits 1.0.0: What Changes for Makers
Arm killed MbedOS, so Arduino rebuilt on Zephyr. The 1.0.0 core adds Nicla Vision camera support, Zephyr 4.4.1, and VENTUNO Q silicon.
microcontrollers
Add a CircuitPython Watchdog So Your Build Reboots Itself
A frozen microcontroller mid-demo is fixable in ten lines. The CircuitPython watchdog module lets your board detect its own hang and reset itself.
diy projects
Tiwaz: An STM32 Split Keyboard That Is Also Two Macro Pads
Timo Strube's Tiwaz splits into two standalone macro pads with joysticks, runs QMK on an STM32F401, and ships every hardware file open source.