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These I know very well. Also, as I mentioned in the posts above, these are not simple LEDs that are known to have 1.7V to 3.2 V forward voltage. So I have attached a picture of 4 Volt version.Please see what is written near every LED. They are working without any resistance for months. May be...
This is a part of China made Emergency Light and working for last one month. 36 LEDs on metal strips are arranged in 4 groups and drawing total around 800mA current. The LEDs look like slightly bigger SMD type. Surprisingly besides every LED on the strip 6Volt is written.(Very small modular LED...
In attached diagram the transistor is used to switch on the LEDs if the charger is off and it turns off the LED is the charger is on. Now why the biasing circuit uses the 47mfd capacitor instead of a resistor? Can anybody please explain the function of those diodes in the circuit? Thanks in advance.
I am using the following function to multiplex two Common Anode Seven Segment displays connected to pic16F876A. Code is working fine when cathods(dp, a,b,....g) are connected to PB0...PB7 and (each) common anodes are connected to the collectors of two PNP transistors which are switched on by...
Its my kind and humble request to you sir, while we check the pin diagram, please try to remember the simple rule that input and output pins needs initialization.
And without knowing the crystal frequency used its not easy to tell the timer1 is properly initialized or not.
I have done this type of project. TSOP1738 is not a good choice for this type of project. Not only TSOP1738 needs a modulated Infra red ray, also TSOP1738 behaves abnormal for a contenious ray. Lots of things will have to be taken care of.
Please anyone tell me how many times in a minute the LEds of PORTB will blink? Or the delay time the mydelay() will create.
void mydelay();
void main() {
OPTION_REG = 0x87; // Assign prescaler to TMR0
TRISB = 0; // PORTB is output
PORTB = 0xFF; //...
This code is for PIC16F876A with 20Mhz crystal to learn using Timer0 .
I am getting the following error in mikroc Pro:-
void main() {
unsigned char count;
TRISB=0;
TMR0=0;
OPTION_REG=0B00001000;
PORTB=0x00;
while(1){
if(TMR0IF) { //<---------no error here
count++...
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