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Developer tools · #arduino
Use unsigned subtraction to handle millis() rollover after 49.7 days, with a non-blocking blinker example and RTC guidance.
Learn how to use Interrupt Service Routines (ISRs) in Arduino to capture high-speed hardware events without polling, including the critical use of volatile variables and atomic access.
A technical guide for Arduino developers on choosing between I2C and SPI protocols, comparing pin usage, speed, and reliability for peripheral integration.
Learn how to connect an ESP32 to Wi‑Fi, send data to a REST API, and balance power consumption against latency using deep sleep. A step‑by‑step guide with code, trade‑offs, and practical checks.
Standard attachInterrupt() only reaches two pins on an ATmega328P. Pin change interrupts let any port pin wake the CPU, but they require direct register access and careful port-level handling.
Use Arduino’s EEPROM library to store configuration structs that survive resets. Learn how to write, read, and validate data, handle wear‑leveling, and avoid common pitfalls.
Resolve the common 'avrdude: stk500_getsync()' error on Arduino Uno boards. This guide covers port conflicts, RX/TX interference, driver issues, and hardware loopback testing.
Hardware interrupts let Arduino respond to external events instantly—no polling required. Learn how to use attachInterrupt() safely and avoid common pitfalls that crash your sketches.
Learn how to use hardware interrupts on Arduino AVR boards to capture asynchronous events instantly, avoiding the latency and missed triggers associated with polling.