Electronics Projects, PIC18F2320 Timer Digital Group Socket article
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Digital group of plugs when using pic18f2320 microcontroller (DS1302) becomes set if getil (Relay control with 4 channels) socket on the LCD display shows the time, the remaining time can be adjusted with the buttons visible. Devices connected to the outlet can be closed automatically. Software PCBs with C language prepared by the project, the source code files are schema.
This little tiny connection a timer clock. The idea arose then when I should have inserted the 3. switch-clock into an one extending because it is necessary to join the lighting already, filter and possibly the heater.
The soul of this connection originally a pic 16F870-es mikrocontroller was. It turned out meanwhile though that little are a sweet RAM and ROM-ja. I exchanged it then an with him onto the compatible bigger sibling of pin assignment, PIC18F2320.
For this the mikrovezérlonek 8192 bytenyi* the memory of a program and 512 bytes data* he has a memory. This already more than enough.
His other important part the DS1302-es RTC produced by Maxim. This a clever real-time clock, because can be found in him an element (ill. backup battery) charger electronics.
source hobbielektronika.hu PIC18F2320 Timer Digital Group Socket schematic pcb pic hex alternative link: pic18f2320-ile-lcd-gostergeli-zaman-ayarli-dijital-grup-pizir.rar