// ZS-042: SDA-A4(PC5),SCL-A5(PC4),SQW-pin 2 (PD2) // This sketch demonstrates how to use the ZS-042 RTC // and a 4 way relay module to swtih the relays in a timely programmed way // using the serial ...

* v.1 - some changes: https://forum.arduino.cc/t/control-4-relays-to-turn-on-for-a-few-seconds-a-day-and-then-turn-off/1112044/15 * v.1a - Nicu FLORICA (niq_ro ...

I have been delving (groping blindfold, more accurately) into the Arduino compiler adaptation code to try to determine how it handles the switch-over between its pwm activities, its set-I/O-to-output ...

I have been trying to work out how to use the the timers within 8bit AVR processors through the Arduino IDE, but in modes not covered by the IDE. Lots of people have put up code, often two or three ...

“Arduino Self-Timer” project presented here is a low-component count 60 seconds countdown timer. It can be powered from a 9V compact battery or suitable Arduino AC mains adaptor. Working of the ...

AITRIP 3PCS DS3231 Real Time Clock Module RTC Sensor High Precision AT24C32 IIC Timer Alarm Clock for Arduino Raspberry Pi ACEIRMC 2pcs DC 6-30V Timer Relay Programmable Delay Relay Module Cycle Timer ...

When notes stuck to the water heater failed [Ryan] decided to whip up “the world’s most expensive 240V relay” using a servo, a real time clock and of course an Arduino. All in an attempt to save a ...