ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Developer tools · #arduino
delay() freezes the whole sketch, not just one task. Here is how millis()-based elapsed-time checks let a blink pattern and a debounced button run together — and what that costs.
Learn how to replace the blocking delay() function with millis() in Arduino to enable multitasking and responsive sensor polling.
Learn how to implement high-frequency pulse counting on Arduino using external interrupts, volatile variables, and atomic access to prevent data corruption and pulse loss.
When an Arduino‑based monitoring system placed inside a concrete wall or floor stops transmitting sensor readings, what diagnostic procedure can be followed to determine whether the problem originates from physical damage to the wiring, moisture‑induced corrosion, or a software fault? Outline the steps for visual inspection, continuity testing, isolation of
Goal: Choose a diagnostic method that reveals why a sketch fails to deploy without consuming excessive resources or disrupting the bootloader upload process on AVR‑based Arduino boards. Constraints: Serial‑based debugging adds flash and RAM overhead proportional to the number of log strings and can delay boot‑up when placed in setup() . The Watchdog Timer ca
Memory Constraints in AVR-based Firmware Developing Arduino sketches on local simulators often masks memory limitations because simulated environments may not strictly enforce the physical SRAM boundaries of the ATmega328P. In a production environment, the 2KB SRAM limit is shared between static variables, the heap, and the stack. When scaling a project from