Hello,
Is it possible to use the above example with an MM5450BN chip?
http://www.datasheetcatalog.org/datasheet2/9/0o13pk69a9pykerrd82w018d42py.pdf
I wired it all together based on fatfinger's diagrams and ran the code listed on arduino website, not working!
Im trying it with just 1 LED right now and from what I read about 5450, it does not need a resistor for the LEDs (I tried it both ways though).
To check the LED itself I ran it with "Blink" example through pin13 and it works - so the voltage/ground part is right at least.
With the slight datasheet differences between the chips, can someone verify the following.. ?
4794 5450
STR = Brightness control ?
CP = Clock In ?
EO = Data Enable ?
int data = 9;
int strob = 8;
int clock = 10;
int oe = 11;
int count = 0;
int dato = 0;
void setup()
{
Serial.begin(9600);
pinMode(data, OUTPUT);
pinMode(clock, OUTPUT);
pinMode(strob, OUTPUT);
pinMode(oe, OUTPUT);
}
void PulseClock(void) {
digitalWrite(clock, LOW);
delayMicroseconds(20);
digitalWrite(clock, HIGH);
delayMicroseconds(50);
digitalWrite(clock, LOW);
}
void loop()
{
dato = 5;
for (count = 0; count < 8; count++) {
digitalWrite(data, dato & 01);
Serial.write((dato & 01) + 48);
dato>>=1;
if (count == 7){
digitalWrite(oe, LOW);
digitalWrite(strob, HIGH);
}
PulseClock();
digitalWrite(oe, HIGH);
}
delayMicroseconds(20);
digitalWrite(strob, LOW);
delay(100);
Serial.write(10);
Serial.write(13);
delay(100); // waits for a moment
}
Any advice for the newbie?