This clock counts seconds, minutes, hours and day of the week. Time is displayed on 4 seven segment LED displays, and is adjustable with three buttons at start time (up, down, enter). You can program the day of the week, hour, minute and duration of the alarms.
The number of alarms are limited by ROM space only. The alarm is on the RA4 open collector output of the PIC, and is repeated on a decimal point of the display. For once, the program is in BASIC (mikroBasic) and this should make a good start for beginners.
PIC16F84A Alarm Clock: [Link]
T-Clock is a demo-application for Philips LPC2000 ARM7TDMI controller with a KS0108/KS0107-based graphics-LCD (128*64 pixels), DCF77 time-receiver and one wire bus (for DS18×20-Temp.-Sensor).
The time and date are received with a DCF77-receiver-module. The DCF77-signal is transmitted from a station near Frankfurt/Main, Germany and can be received all over Europe, North Africa and the Middle-East. Please visit www.ptb.de and ask google with “DCF77″ for more information. In times when the DCF77-signal is not available (i.e. thunder and lightning near transmitter) the RTC of the LPC-controller is used to drive the clock.
The clock also display the temperature measured trough a DS18×20 family sensor. he sensors provide the temperature in digital form on a One-Wire-Bus. The Maxim Web-Site has a lot of information on the One-Wire-Bus.
The whole project should cost you about 100 Euro’s, not cheap but a very good and interesting project for ARM microcontrollers.
T-Clock An ARM7 Controlled Blue LCD Clock: [Link]
This is a small ajustable clock, I made based on PIC16F84A microchip.The hardware part is very simple because it only uses 74hct238 demultiplexer, 4×7 segments, and some rezistors. The software part is programmed through a device connected to serial port with icprog and made/debuged with MPlab.
Digital Clock Based On PIC16F84A: [Link]
This ATmega48 based wall clock is able to keep any kind of score and display it on its 4 digits. The score is controlled by a IR remote control powered by an ATtiny28. Also trough the remote you can set the time and configure the clock. The digits are build on pcb with 5 mm LED’s, no commercial LED digits were used.
Wall clock that controlled trough IR also keeps your score: [Download Project] - [View Project PDF] - [Via]
The “Birth Clock” is a fragile glass object containing a digital clock that is not working; it is designed to help you to come to a decision when you’re stuck at a specific point in life. Smash the glass, and the clock will start to work, leaving you with the broken object as a reminder of your dramatic decision. Leave the object as it is, and you remain out of time, having the beautiful object as a reminder of your resistance to change. What would you do?
Electronic Ambiguity: [Link]
