DDigiCirq·2d agoHow Does an Arduino Actually Work? From Your Sketch to One Pin Going HIGHWhat happens between digitalWrite(13, HIGH) and 5 V on a pin: the compiler, the upload, the bootloader, the ATmega328P, and the one bit in one register that does it.6 min read·digicirq.hashnode.dev
AAvaq Semiconductor·Sep 10How to Choose a Microcontroller: A Practical Guide for Embedded System DesignHow to Choose a Microcontroller? The practical answer is to start with the system requirements, not with the MCU catalog.13 min read·seminews.hashnode.dev
Ccircuitrocks·Aug 11Challenger+ RP2350 NB-IoT: Cellular IoT on a BreadboardChallenger RP2350 NB-IoT Cellular: iLabs' Challenger+ RP2350 NB-IoT puts a Raspberry Pi RP2350, cellular NB-IoT, and GNSS on one Feather board that fits a…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 3Build a Touchless ESP32 Theremin With Capacitive Touch SensingTouchless ESP32 Theremin Capacitive: An ESP32 turns hand distance into music with its capacitive touch pins and built-in DAC, no tuned oscillators or…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Jul 18Meet Pinch: A 32-Bit Arduino Board Smaller Than a FingernailMeet Pinch 32-Bit Arduino: The Moddo Pinch is a 32-bit Arduino-compatible dev board just 10.5 x 10.9 mm, packing a SAM D11, 15 GPIO pins, and an RGB LED…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Jul 16Moonshine Micro Puts Voice AI on a Sub-$1 RP2350 ChipMoonshine Micro Puts Voice: A new open-source toolkit squeezes voice detection, speech-to-text, and text-to-speech onto the sub-$1 RP2350, no cloud…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Jul 13Build a Rotating UV Flame Scanner With the UVTRON R2868Rotating UV Flame Scanner: A solar-blind UVTRON R2868 phototube on a spinning platform spots flames through dense brush from 15 meters.3 min read·circuitrocks.hashnode.dev
KKomal Pawar·Jul 12Day 1: Starting My Embedded Journey (2026 Roadmap)"I'm not writing because I'm an expert. I'm writing because documenting what I learn helps me learn better—and maybe it helps someone else too." Why I'm Starting This Series Instead of keeping notes2 min read·komalpawar.hashnode.dev1
Ccircuitrocks·Jul 8This DIY STM32L4 Smartwatch Puts Every Sensor in Your ControlDIY STM32L4 Smartwatch Puts: A maker built an open-source STM32L4 smartwatch with a six-axis IMU, BLE, and USB-C mass storage, then released every line of…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Jun 2RTShield HAT Brings Real-Time RP2350 Control to Raspberry PiThe RTShield HAT adds an RP2350 microcontroller to your Raspberry Pi, giving Linux projects deterministic, real-time hardware control over a UART link.2 min read·circuitrocks.hashnode.dev
