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Here you will find a range of functioning circuits. Choose one below.
PIC Based:
» Blinking LED
This circuit is a simple LED Flasher to demonstrate some of the fundamental PIC instructions.
» Simple LCD Display Using A Lookup Table
This circuit shows how to display charaters on an LCD using a Lookup Table.
» Binary to 7 Segment Decoder
This circuit converts a 4 bit binary number and displays the Hexadecimal equivelant on a 7 Segment LED display.
» Digital Temperature Sensor
A Dallas DS18B20 Digital Temperature Sensor is used a to obtain temperature data and it is displayed on a 4 digit 7 Segment LED display.
Other:
» Telephone Ring Detector
This circuit indicates visually via an LED when the telephone line is ringing (incoming call). The LED can be replaced by an optocoupler to interface to another circuit to maintain isloation from the phone line.
» DTMF Generator & Receiver
This circuit shows how the Holtek 9200B Generator & 9170B Receiver works.
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