Nick Hall builds a LED Pong clock, project files and source code is included. [via]
This project uses the classic video game Pong to tell the time. The 2 players automatically win and lose so their scores reflect the hours and minutes. The clock can also show the time written in words, or with large or small digits. Two buttons allow you to set the time and change the clock mode via a menu screen. The project uses 2 LED matrix panels from Sure Electronics, an Arduino, and a DS1307 clock chip.
LED Pong Clock – [Link]
This project is a Real time clock shield for Arduino based on DS1307 realtime (RTC) integrated circuit. It is a fairly accurate clock that can keep time when not powered if you add a 3V battery. Data is transfered to microcontroller through I²C bidirectional interface. It is connected to Arduino at pins 4 and 5. Check schematic on the link below.
Arduino DS1307 Real Time Clock Shield - [Link]
This project is a Temperature and Air humidity logger with LCD display based on PIC16F876A microcontroller, a EEPROM memory 24LC512 (64×8 kbites), a Dallas DS1307 RTC and a RS232 voltage adaptation circuit. Sensor is SHT11. It is able to measure and store temperature and relative humidity sensor without a PC. It has enough memory to store measurements for 3 years. It also has user-friendly menu for configuring the parameters, preview mode for viewing non-saved measured values, and is able to transfer saved data to PC using RS232 interface via a specific software.
Temperature and air humidity logger with LCD display - [Link]
“John Boxall” design and build this clock that has no digits. It displays time by blinking each digit in different color using an RGB led. Clock is being run from an ATmega328 Microcontroller and a DS1307 Real Time Clock. Check design files and schematics in the link below. [via]
For example, if the time is 12:45, the clock will blink red 12 times, then show blue for a second (think of this as the colon on a digital clock) then blink four times in green (for forty minutes), then blink three times in red for the individual minutes. If there is a zero, blink blue quicklyl.
RGB LED Blink Clock – [Link]
In this tutorial learn how to use Maxim DS1307 Real Time Clock with an ATMega168 AVR microcontroller to build your own multi featured LCD clock.
Using Maxim DS1307 Real Time Clock with Atmel AVR - [Link]
This clock is constucted using an old HDD. The clock is controlled using an ATMEGA128 microcontroller and the time is counted from DS1307 real time clock IC. Motor is controlled from TDA5140A using standard configuration. The device is also equipped with RS232 interface to load new software and a small universal remote.
This project uses RGB LEDs to create a clock face. Each hand is assigned a colour and as the hands overlap on the face of the clock it mixes the colours.
The clock uses a single AA battery to power the display which is boosted to 5 volts with a switching mode power supply. The power supply should be able to use any AA battery that is at 0.7 volts or higher, which means that it should still work fine with AA batteries that may be “dead” when used in other devices.
The heart of the clock is a DS1307 realtime clock with a CR2032 coin cell battery backup. The battery should be sufficient to keep the time for at least a couple of years.
LED Desktop Clock - [Link]
This a custom designed module for the DS1307 Real Time Clock. The module comes fully assembled and pre-programmed with the current time (ok, so it’s our current time – MST). The included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17 years typical) without external 5V power. The DS1307 is accessed via the I2C protocol. We’ve written a test-bed to program the modules. This test-bed code should give you some insight on how to interface the module to any mircocontroller using our example software I2C and BCD routines.
Real Time Clock Module - [Link]
This is a digital clock and temperature display which is alernate display between time and temperature.
- Display time 24-hour format. 00:00 – 23:00
- Use DS1307 RTC with 3V betterry back-up.
- 1 channel temperature sensor(DS1820)
- measures temperatures from -55 to + 125 degree Celsius.
- Temperature accuracy 0.5 ‘C
- software compiled with CCS C compiler V 3.222
Digital Clock and Temperature - [Link]