This project aims to build a digital clock using a real-time clock chip (DS3231) with battery backup, a liquid crystal display (JHD 204A), and an Arduino Uno board. Let us try to design our own ...

Circuit and Working. Fig. 2 shows the circuit diagram of the automatic school bell. It is built around Arduino Uno R3, 16×2 LCD display with I2C (MOD1), DS3231 RTC, 4×4 matrix keypad, 5V SPDT relay, ...

To build this RTC DS1307 IC based digital clock, we have used here Arduino Pro Mini, but you can also use any other Arduino model such as Arduino Uno or Arduino Nano. Along with the Arduino board, ...

LCD1602 Display Module (with pin header) - 1 piece (to display the clock data) UNO R3 Controller Board - 1 piece (microcontroller itself) . Ultrasonic Sensor - 1 piece (to detect the distance) .

It’s hooked up to a DS3231 real-time clock module so it can keep accurate time for long periods, as is befitting a clock. Displaying the time is done via the use of two analog meters, each ...

This 3D-printed mechanical clock uses three stepper motors controlled by an Arduino Uno and a real-time clock module. Each digit is powered by cam-driven segments with rubber bands helping reset the ...

The wiring of the circuit is described in the attached schematic. For the Dot Led Matrix. Pin 11 to GND; Pin 12 to VCC; Pin 3 (CS1) to Arduino Digital pin 9; Pin 5 (WR) to Arduino Digital pin 10; Pin ...

The past month or so I’ve been playing with the Maxim DS1307 Real-Time-Clock and DS1621 Temperature Sensor ICs. I hooked them up to an Arduino Uno board with a Parallax Serial 16×2 Character LCD. I ...

Because this is an extension of the original generator the basis will be the same Arduino Uno I was allready using. A prototype shield carries the real-time clock based on a DS3231 chip and the rest ...