This version uses millis() as a software clock. Time resets whenever the Arduino loses power or restarts.

#define ADDR_MIN_DISTANCE 0 // 4 bytes cho float #define ADDR_MAX_DISTANCE 4 // 4 bytes cho float #define ADDR_LAST_DAY 8 // 1 byte cho ngày RTC_DS3231 rtc; SoftwareSerial simSerial(SIM_RX, SIM_TX); ...

When it comes to electronic design, breadboarding a circuit is the fun part — the creative juices flow, parts come and go, jumpers build into a tangled mess, but it’s all worth it when the circuit ...

ESP32 is a tiny cheap 8$ module with a dual core 32-bit CPU and built in Wi-Fi and dual-mode Bluetooth with sufficient amount of 30 I/O pins for all basic electronics projects. All these features are ...

Running, running, every day, we keep running to work, school, and college. In this busy routine, many of us do not even have enough time to eat… ...

You almost certainly don’t have an application for the sort of accurate timekeeping that’s made possible by this enhanced version of [Cristiano Monteiro]’s ...