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eDrum design is based on PIC16F877 RISC microcontroller from Microchip running at 20MHz, two line (16×2) LCD with backlight, and some operational amplifiers. It has 22 analog inputs, 2 digital inputs, 22 input gain potentiometers, 4 control buttons, one MIDI out and one serial RS232 out.[more]
This project is a simple DTMF Remote control. The DTMF detector is integrated in software. All the logic requested to receive and decode DTMF Commands over the phone line is integrated in the PIC16F877 chip, only few external components are used. As soon as possible he plan to switch to a PIC16F629-20 Pic and like that will be a Single Chip DTMF Remote Control. [more]
This frequency synthesizer use MAX038 waveform generator devices from MAXIM and control by PIC16F877 which is a popular microcontroller from Microchip.But,the author not made a schematic detail, he made a PCB for this project only which the main PCB include with MAX038 high frequency waveform generator, powersupply and 16F877 PIC controlling the frequency synthesizer.But,over all design look very nice.[more]
This is a PIC16F877 based Timer.The outputs consist of a single 7-segment LED display and a piezo speaker . The inputs consist of a 10-position โBCDโ rotary switch (for digit entry), two pushbuttons (set and start/stop), and two bits of a 8-position DIP switch (timer selection).The breadboard on the right of the photo contains the microcontroller (PIC16F877) and most of the other components of the timer; the breadboard on the left contains the serial-port adapter circuit used for programming and the DIP switch.[more]
This is a PIC16F877 based alarm clock designed by Quozl.Here are some features:wakes Quozl up each day, doesn’t wake Quozl’s wife, defaults to wake Quozl up the next day, doesn’t need to be told, can be told at any time in the previous day not to wake Quozl up, can be configured accurately without having to hold buttons down, can emit per-second tick noises, or not, can emit tones in response to key presses, or not, can be told that Quozl is on olidays,changing time for daylight saving can retain minutes and seconds, open source, capable of being further hacked. [more]
