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PIC16 Infrared receiver with Nec code
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This project use a generic 38KHz infrared riceiver to decode standard nec codification used in the most popular tv remote control, i test this code on PIC 16F873 but it's suitable for a lot of different PIC, like PIC12,16,18,dsPic,33.
The signal received is demodulated by infrared receiver connected to RB0, the change of state of this port, generate an interrupt.
At the same time the TMR0 is used to check the timing of signal and understand if reciving a 0 or 1.
In this firmware the code received is write directly into the PORT C, but you can change it to activate relay or led.
The code is portable to other microcontroller with external interrupt end timer capabilities.
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Microchip programmable cyclic timer or one shot ti
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This is a simple but useful timer, that you can configure in cyclic mode or one-shot mode.
In cyclic mode you have to set work time and pause time (selectable form 0.1 sec to 10 days) and it's ready to work to infinity, in one-shot mode you have to set only shot time (selectable form 0.1 sec to 10 days ).
To set time you must use potentiometer connect with A/D converter of PIC, and to set multiplier of time you must use jumper.
Complete instructions are attached.
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