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20pcs/lot 1602 LCD Screen Module For Arduino MEGA 2560 1280 UNO R3 Free Shipping

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Sale Price: US $79.99
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45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.
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On-time Delivery
Guarantees: On-time Delivery 60 days

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1602 LCD Module Screen Keypad Shield for Arduino Duemilanove UNO MEGA2560 MEGA1280 1602

Features : This 1602 LCD Module Screen for Arduino is a 16×2 LCD Keypad module for Arduino Diecimila Duemilanove / FREEDUINO board..
Blue Backlight with white words
Uses 4 Bit Arduino LCD Library
100% brand new and high quality

Sample code:

/*
The circuit:
* LCD RS pin to digital pin 8
* LCD Enable pin to digital pin 9
* LCD D4 pin to digital pin 4
* LCD D5 pin to digital pin 5
* LCD D6 pin to digital pin 6
* LCD D7 pin to digital pin 7
* LCD BL pin to digital pin 10
* KEY pin to analogl pin 0
*/

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 13, 9, 4, 5, 6, 7);

char msgs[5][16] = {“Right Key OK “,
“Up Key OK “,
“Down Key OK “,
“Left Key OK “,
“Select Key OK” };

int adc_key_val[5] ={50, 200, 400, 600, 800 };
int NUM_KEYS = 5;
int adc_key_in;
int key=-1;
int oldkey=-1;

void setup()
{
lcd.clear();
lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print(“ADC key testing”);
}

void loop()
{
adc_key_in = analogRead(0); // read the value from the sensor
key = get_key(adc_key_in); // convert into key press

if (key != oldkey) // if keypress is detected
{
delay(50); // wait for debounce time
adc_key_in = analogRead(0); // read the value from the sensor
key = get_key(adc_key_in); // convert into key press
if (key != oldkey)
{
lcd.setCursor(0, 1);
oldkey = key;
if (key >=0){
lcd.print(msgs[key]);
}
}
}
delay(100);
}

// Convert ADC value to key number
int get_key(unsigned int input)
{
int k;

for (k = 0; k < NUM_KEYS; k++)
{
if (input < adc_key_val[k])
{
return k;
}
}

if (k >= NUM_KEYS)k = -1; // No valid key pressed
return k;
}

Package include:

10 * 1602 LCD Module

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Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $79.99 / lot