Amarino shield- CD4094 control with Arduino- WITHOUT SMART PHONE

This is the first experiment for Amarino shield. If you do not know anything about Amarino toolkit or this shield please click on the following links:

1. About Amarino toolkit
2. About Amarino shield

You can get a list of other experiments at the end of this post.

This experiment has been derived from HEF4794_- Arduino_ Experiment.

This example makes the use of an LED Driver in order to control an almost endless amount of LEDs with only 4 Arduino pins. In this experiment, we use the CD4094 chip. Here, you can get the original version of this experiment: http://www.arduino.cc/en/Tutorial/LEDDriver . The Arduino team has used HEF4794.

An LED Driver has a shift register embedded that will take data in serial format and transfer it to parallel. It is possible to daisy chain this chip increasing the total amount of LEDs by 8 each time. You need to refer to datasheet for connecting more CD4094.

The code example you see here is taking a value stored in the variable dato and showing it as a decoded binary number. E.g. if dato is 1, only the first LED will light up; if dato is 255 all the LEDs will light up.

NOTE:  Switch ON the IC1 -1 P DIP switch. If the switch is off, the 10pcs of LEDs connected to CD4094 will not work.

Arduino Sketch: LINK

	/* Shift Out Data
	* --------------
	*
	* Shows a byte, stored in "dato" on a set of 8 LEDs
	*
	* (copyleft) 2005 K3, Malmo University
	* @author: David Cuartielles, Marcus Hannerstig
	* @hardware: David Cuartielles, Marcos Yarza
	* @project: made for SMEE - Experiential Vehicles
	*/
	int data = 8;
	int strob = 7;
	int clock = 10;
	int oe = 9;
	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 = 255;
	for (count = 0; count < 8; count++) {
	digitalWrite(data, dato & 01);
	//serialWrite((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); // waits for a moment
	}

view raw CD4094 experiment using Amarino shield hosted with by GitHub

Related tutorials:

• About Amarino toolkit
• About Amarino shield
• Flickr Images
• Experiment 1– Basic control over CD4094 without Android phone and serial emulator application
• Experiment 2- CD4094 control using Android phone and Amarino shield
• Experiment 3- Amarino experiment- RGB Lamp
• Experiment 4- Amarino experiment- Sensor Graph with LED Controller
• Experiment 5- Amarino experiment- LM35 based temperature sensor with LED controller
• Amarino Shield 3.0 Schematic
• Assembly tutorial
• Buy the shield

You can purchase this versatile Amarino shield at buildcircuit.net and Etsy. The store is owned and operated by the team which operates buildcircuit.com.

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