If the serial number read matches with any of the serial numbers stored in the memory the relay is activated. The serial number read is compared with five serial numbers stored in internal EEPROM of the the microcontoller. This program contains all the necessary routines for the handling of the “one wire” protocol. This program implements a very simple secure access control using a DS1990 iButton as the key. The LED's are then switch on and off in sequence to create a light chaser. This project envolves the connection of20 LED's to the 5 GPIO port of a PIC12F629. This code uses Novo RTOS making the code much simpler. PWM Fan Speed ControlllerĪ demonstration ion program, using a PIC18F2520, of how to scan a matrix keypad and control a DC fan speed using PWM. Code ported by: This code also has an option to use Novo RTOS. A GNU licenced Modbus protocol stack implementation that has been ported to the PIC18 processor using the BoostC compiler.
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