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Topic: Serial LCD BPK help !!!!!!! (Read 1 time) previous topic - next topic

vikash kumar


I am working on a project on Home Automation using arduino . I am using a serial LCD display (4x20 white on blue) from http://www.milinst.co.uk/. I dont know how to interface with arduino. I used the data sheet and i am not getting the output. can anyone guide me by step by step process with a sample code so that i can understand well.


- http://arduino.cc/en/Tutorial/ASCIITable -

connect GND and 5V from Arduino to LCD

connect arduino pin 1 = TX to LCD RX

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)


How did you connect the display to arduino and what code did you use. We don't have a crystal ball here so you have to show some pics and code.

"either 2400 or 9600 baud, no parity, 8 bits, 1 stop bit and inverted format."

I wonder if you noticed inverted format or baud rate (jumper setting)

vikash kumar

i had three pins. +,GND,Serial out. i connected +,GND to arduino +5V and GND respectively. Serial to arduino TX pin. 2400 baud rate is OFF and 9600 is ON in my serial LCD. I used the below code

void setup() {
  Serial.print(1, BYTE);  //Clear Screen
  Serial.print("Hello world");


I dint get any output. help me !

void loop() {

vikash kumar

to ROB

I did what you have said. but i am not getting the output. I have attached the Data sheet. please give me a sample program using the data sheet i have attached.

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