Time Interval Relay Circuit for the clock circuit above This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes. 12 LEDs can be arranged in a circle to represent the 12 hours of a clock face and an additional 12 LEDs can be arranged in an outer circle to [...]
This project demonstrates the use of 16×1 line LCD module to interface with Nitron 16-pin MCU, 68HC908QY4. The original idea came from one evening I went out with my son to the park near my home in Korat. The park has a nice walking way for people to exercise. I was wondering how long the [...]
Heart Lamp with Flashes 18 LEDs Circuit This activity flashes 18 LEDs at three altered ante and you can use these to actualize an clear Valentine Heart. The ambit is kept simple (and low cost) by application the 4060B IC which is a adverse and oscillator (clock) in one package. The ambit requires a 9V [...]
With aloof eight genitalia and a battery, the accouterments can hardly be simpler. Ambit access is a aftereffect advancing beeline from the akin of affiliation of its capital components. The temperature sensor IC is either a DS1621 or DS1631 (Maxim). This 8-pinner includes a complete agenda temperature sensor/thermostat with I2C output. With the adapted commands, [...]
This project flashes 18 LEDs at three different rates and you can use these to create a Christmas decoration of your choice. The circuit is kept simple (and cheap!) by using the 4060B IC which is a counter and oscillator (clock) in one package. The circuit requires a 9V supply, such as a PP3 battery. [...]
This circuit consists of two identical intercom units. Each unit contains a power supply, microphone preamplifier, audio amplifier and a Push To Talk (PTT) relay circuit. Only 2 wires are required to connect the units together. Due to the low output impedance of the mic preamp, screened cable is not necessary and ordinary 2 core [...]
The system presented in this application note implements a simple digital thermometer that includes a built-in LCD and RS-485 communicate ion Port. It is designed around Atmel’s AT89C2051 processor, a digital thermometer/thermostat from Dallas Semiconductor, a small 8 X 2 LED backlit LCD, and an RS485 line interface. The system, shown in Figure, can be [...]
