Morse Code Alarm Clock Modification (Almost) Trivial application of an AT90S2313 or ATtiny2313 in an alarm clock to change the alarm from “BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP…” to “WAKE UP” in Morse code. This was designed in response to a request and is in daily use Downloads (Updated 5 December, 2004) AVR Studio …
Morse Code Alarm Clock using ATtiny2313 microcontroller Read More »
Hardware features: Firmware V4.0 features: Connects to your analog scope in X-Y mode using BNC cables or probes (1x, 10x) Uses the Atmel AVR Atmega328p with 32KB flashmemory On board 5V power regulator for use with user provided wall adapter (8-15V DC center positive) Power plug (5.5mm outside diameter) included On-board Real-Time Clock with 32.768kHz crystal and battery backup: this …
Dutchtronix AVR Oscilloscope Clock using Atmega328 microcontroller Read More »
Based on the Atmel ATtiny12L-4PI microcontroller -A real Time Clock/Calendar for less than US$1.50 in moderate quantity. This is the timekeeping test circuit. It includes a one-transistor circuit to switch in the 5V power supply when present and drop back to the 3v battery the rest of the time. That loop of blue wire-wrapping wire …
If your school, or kids school, or other location relies on a central master clock that is broken, you may have a use for this device. New master clocks are available of course, but school budgets are under extreme pressures, and it really is a satisfying project if you have the necessary skills. This master …
Arduino-based master clock for schools using ATmega128 Read More »
The great adventure that is building clocks continues. Points of interest in this build is that it was the first chance I got to play with the dot matrix display I picked up over winter break, and it’s the first time I’ve soldered and used a surface mount package (albeit I soldered it to a …
The Network Time Protocol (NTP) has revolutionized the world. Suddenly one could have anywhere in the world accurate time and date. NTP is a simple UDP based protocol and can be implemented in a Microcontroller. Using the tuxgraphics ethernet board and a LCD display we build a nice clock which gets time and date via …
Its a digial clock which make use of AT89C4051 to work as a Real time clock. Figure 1 shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). As you can see there is not …
AT89C4051 to work as a Real time clock using atmega Read More »
The original version of xTimer used MAX7219 for driving 7-segment. This new design uses a cheap CMOS shift register, 4094 for LED interface. Each 4094 drives a 0.5″ 7-segment without the need of limiting resistor. The left-hand LED is timer function with buzzer alarm output. The right-hand is for clock display. Hardware Schematic Fig. 2 shows a …
xTimer with 4094 using ATMEL89C2051 microcontroller using atmega Read More »
Its a digial clock which make use of AT89C4051 to work as a Real time clock. Figure 1 shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). here i am using a 16 x …
AT89C4051 to work as a Real time Digital clock Using Atmega Read More »
My wife asked me to find another timer for using in the kitchen. She got one already with analog setting, but it needs one AA size battery. Digital setting may not easy for human interface. However I will make it for easy time setting. When I am free I will modify it to be analog …
xTimer V1.0 using AT89C4051 microcontroller using atmega Read More »
