Learn ARDUINO-C with Real Code Examples

Avoid long blocking delays

Use interrupts for time-critical events

Optimize memory usage on small MCUs

Reuse libraries for common tasks

Limit floating-point operations on small boards

Arduino devices typically lack OS-level security

Validate inputs for sensors or communication modules

Use secure Wi-Fi modules for IoT

Avoid exposing USB interfaces unnecessarily

Limit sensitive data storage on EEPROM/flash

Serial output logging

Use LEDs as status indicators

Integrate data logging modules

Monitor sensor values via external software

Debug via IDE or Arduino CLI monitor

Comment and document all pin assignments

Use constants for pin numbers

Keep loop() short and efficient

Use functions to modularize code

Test hardware interactions incrementally