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Hobby Components 1602 SmartLCD (HCMODU0122) 
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Post Hobby Components 1602 SmartLCD (HCMODU0122)
Image




The 1602 SmartLCD module is a serially controlled 2 line by 16 character alphanumeric LCD display. Unlike most serial LCD modules on the market the 1602 SmartLCD includes a microcontroller which gives the module a rich set of features. It also requires no software or libraries to initialise the display, output text to the screen or control the features of the module, which reduces development time and frees up much needed resources in your microcontroller or development board.


Image


To interface to the module there is a choice of serial I2C, allowing more than one screen to be controlled from the same bus, or via a serial UART interface. When controlled via the serial UART there are two further operating modes (AT command mode and passive mode). When in AT command mode all the features of the module can be controlled from simple text based commands. These include controlling backlight and contrast levels and also printing text to the display. In passive mode any printable ASCII characters sent to the module via the UART are automatically printed to the screen. When in passive mode the module will also respond to a number of extended ASCII codes.




Features:


Image

16 character by 2 line LCD display module.
Very clear white text with blue backlight.
No software or drivers required to setup or control the module.
Software backlight control with 11 brightness levels.
Software contrast control.
External keypad with buzzer support (optional extra, see item HCKITS0058).
Single 5V operation.


I2C Mode

Control multiple displays from one I2C bus.
Software control of all module features via simple I2C commands.
I2C address configurable via software from 0x08 to 0x77 (default 0x27).
Built-in 10K pull-up resistors for clock SCL and data SDA lines.
Access to external keypad and buzzer.

Serial AT command mode

Software control of all module features via simple AT text commands.
Software configurable baud with 8 different speeds (9600 BAUD default).
Access to external keypad and buzzer.

Serial passive mode

Compatible with 5V serial UART devices (9600 baud default) – no microcontroller required.
Automatically displays any printable ASCII text.
Responds to a number of additional extended ASCII control codes.



Specification:

Model number: HCMODU0122
Supply voltage: 5V
Display type: 16 character x 2 line alphanumeric LCD
Display technology: STN negative blue / transmissive polariser
Supply current: 27.5mA (backlight on) / 6.5mA (backlight off)
Interfaces: I2C, serial UART and external keypad
Module dimensions: 80mm x 36mm x 17.5mm
Bezel dimensions: 71mm x 24mm




Arduino Example - Printing to the screen in AT command mode

This example demonstrates how simple it is to control the LCD in AT command mode using an Arduino. The example uses the Arduinos built in serial print function to send the AT commands to clear the screen and print 'HELLO WORLD!' to the screen. No special libraries or setting up required! Just connect the LCD to your 5V Arduino as follows:

ARDUINO.......SMART LCD
GND..............GND
5V.................5
TX.................Rx


Code:
void setup()
{
  Serial.begin(9600);                 //Initialise the serial UART

  Serial.println("AT+CLR");           //Clear the screen
}

void loop()
{
  Serial.print("AT+PR=");             //Send the AT print command
  Serial.println("HELLO WORLD !");    //Send the text to print. Note the println to send a CR+LF after the text

  while(1);                           //Do nothing
}






Optional Features - LCD Keypad kit

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The SmartLCD's features can be further expanded with the addition of the Smart LCD keypad (see item SKU: HCKITS0058). This add-on board connects to the SmartLCD's keypad header using a single 4 way cable. Once connected it adds the additional features of keypad control (up, down, left, right, select, and back) and audible output to your end application. Access to button states and speaker output is then available via the SmartLCD's I2C or UART interfaces using its built-in commands (see the software section of the SmartLCD manual for more information).


Optional Features – Wireless access

Image

A bonus feature of the Smart LCD, due to it not requiring initialisation by a microcontroller, is it's ability to operate wirelessly using a suitable serial wireless pass-through module. Here in the diagram below you can see a remote control application of the Smart LCD and
keypad with the addition of HC-05 Bluetooth slave (see item SKU: HCARDU0004) and Bluetooth master (see item SKU: HCARDU0064) modules.




Image

The reference manual for the SmartLCD 1602 LCD can be downloaded here:

http://hobbycomponents.com/downloads/HCMODU0122_1602_Smart_LCD_Manual.pdf


If you wish to interface the SmartLCD to an Arduino via its I2C interface we have written an Arduino library that will help simplify your sketch. This can be downloaded from the software section of our forum here:

http://forum.hobbycomponents.com/viewtopic.php?f=58&t=2206




Disclaimer: Libraries, example code, and diagrams are provided as an additional free service by Hobby Components and are not sold as part of this product. We do not provide any guarantees or warranties as to their accuracy or fitness for purpose.

Descriptions and diagrams on this page are copyright Hobby Components Ltd and may not be reproduced without permission.


Fri Jul 07, 2017 3:50 pm
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Joined: Tue Oct 10, 2017 11:17 am
Posts: 5
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Hello, I bought your product on Amazon, I would like to know if my keyboard can handle multiple menus. In fact, I'm designing an aquarium with an Arduino and Hobby Components 1602 SmartLCD (HCMODU0122) and I'd like to be able to fix times and more with the keyboard.
Help me?


Wed Oct 11, 2017 7:05 am
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Site Admin

Joined: Sun Aug 05, 2012 4:15 pm
Posts: 707
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Quote:
Hello, I bought your product on Amazon, I would like to know if my keyboard can handle multiple menus.


Yes it's possible but the SmartLCD itself doesn't have any built in menu system. Any menus have to be handled by your own sketch by sending text to the display and checking for keypad button presses. You may want to take a look at the example 'SmartLCD_Keypad_Example' sketch found in the SmartLCDI2C library which will give you some clues on how to send information and read back button presses.

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Last edited by andrew on Wed Oct 11, 2017 9:42 am, edited 1 time in total.



Wed Oct 11, 2017 9:26 am
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Joined: Tue Oct 10, 2017 11:17 am
Posts: 5
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Thank's for all.


Wed Oct 11, 2017 9:39 am
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Joined: Tue Oct 10, 2017 11:17 am
Posts: 5
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Sorry if you are disturbed but are in trouble creating the code. I would like to change the time of the ds3231 via the button, do you think you can do it?


Fri Oct 13, 2017 9:33 am
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Site Admin

Joined: Sun Aug 05, 2012 4:15 pm
Posts: 707
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
I'm afraid we don't offer software design services but if you have any specific issues feel free to post them on this forum as somebody may be able to help.

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Fri Oct 13, 2017 4:13 pm
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Joined: Tue Oct 10, 2017 11:17 am
Posts: 5
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Thanks for writing the software I arrange it by myself, the important thing is that this hardware supports it.
thank you very much and good job.


Fri Oct 13, 2017 7:43 pm
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Joined: Tue Oct 10, 2017 11:17 am
Posts: 5
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Hi, I got the product but I can not find the scheme for welding the components, can you help me?


Mon Oct 16, 2017 9:27 am
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Site Admin

Joined: Sun Aug 05, 2012 4:15 pm
Posts: 707
Post Re: Hobby Components 1602 SmartLCD (HCMODU0122)
Are you by any chance referring to the keypad kit? If so this can be found here:

https://hobbycomponents.com/smartlcdkeypad

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Mon Oct 16, 2017 2:23 pm
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