A microcontroller, a digital device, can read, execute and transmit only digital signals. On the contrary, the outputs of the most of the transducers are analog in nature. Thus it is hard to interface these transducers directly with controllers. Analog-to-digital convertor (ADC) ICs are one way to make the analog input compatible with the microcontroller. …
How to work with inbuilt ADC Module of PIC18F4550 Read More »
This experiment creates a Hee Haw sound for an alarm. The diagram shows the number of cycles for the HEE and the time taken for each cycle, equates to a certain length of time. The frequency of the HAW is lower and the number of cycles must be worked out so that the time for the …
After doing two weeks on LCDs, I thought I’d spend a few weeks focusing on the number one question that I get asked; “How do I start working with the Microchip PICMicro?” The question is asked from a variety of perspectives and goals, ranging from somebody that just wants to become casually familiar with the …
#include <16F877.h> #device adc=8 #FUSES NOWDT ,XT #use delay(clock=4000000) char const s[10]={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’}; void init_mcu (void); void display (void); void display1 (void); void calculate (void); void hex_bcd2(int8 k); /*——-define keypad————*/ #define row0 pin_b0 // input #define row1 pin_b1 // input #define row2 pin_b2 // input #define row3 pin_b3 // input #define col0 pin_b4 // output #define …
Matrix scankey 3×4 for Lcd 2 line For CSS Compiler Read More »
Servo motor driver tutorial. This tutorial uses the 12F675 microcontroller to drive a servo. The microcontroller generates the signals to control a standard servo using Timer 0 interrupts (I used a Futaba servo). It does not do anything clever just sets the servo position to predefined positions at one second intervals. A Timer 0 interrupt …
PIC12F675 Tutorial 6 : Driving a standard servo motor with a PIC Read More »
RFID (Radio Frequency Identification and Detection) is widely used everywhere from highly secured defense laboratories to school attendance system. By employing RFID, much secured entry systems can be developed without incurring huge costs. These are the reasons of excessive use of RFID technology. In this article, interfacing of an RFID reader module has been explained …
How to interface RFID with PIC18F4550 Microcontroller Read More »
#include <16F877A.h> #device adc=8 #FUSES NOWDT,XT //No Watch Dog Timer #use delay(clock=4000000) #include <Shift_595_C.c> // 25.5 C 0.5 to step #include <read_temp.c> void main(){ setup_adc_ports(NO_ANALOGS); setup_adc(ADC_OFF); set_tris_a(0xff); set_tris_b(0x00); value = 0; display(); delay_ms(100); while(true){ read_ds1820(); value = temp; hex_bcd(value*10); sent_data(); delay_ms(100); } }
In this video series I am walking through step by step setting up from scratch to build a model railroad structure and layout lighting system that includes using the Pickit2, MPLAB and HI-Tech C. This is a complete walk through! Part 1 – http://youtu.be/DJlT0ZIQiO8 Installing MPLab and Hi-TechC / Obtaining a Pickit Programmer Part 2 …
In this talk, you are introduced to how to get started using the PIC Micro. The talk includes practical tips and ideas. In addition, the link to download all the material is here: 4shared.com/folder/2FPmwzlu/_online.html This includes beginner documentation, demo software, and additional material, like how to modify the PICKit-2 and what you’ll need to get …
Introduction To The PIC Microcontroller Talk video tutorial Read More »
#include <16F877.h> #device adc=8 #fuses XT,NOWDT,NOPROTECT,NOLVP #use delay(clock=4000000) #INT_EXT void EXT_ISR(void){ output_toggle(PIN_B7); delay_us(300); } void Init_MCU(void){ enable_interrupts(GLOBAL); enable_interrupts(INT_EXT); ext_int_edge(H_TO_L); set_tris_B(0x01); output_low(pin_B7); } void main(){ Init_MCU(); while (TRUE) { output_toggle(PIN_B6); delay_ms(1000); } }
