View source for KS0454 keyestudio Circular TFT LCD Smart Watch Display Module




[[image:Ks0454图片1.png|thumb|400px|right|keyestudio Circular TFT LCD Smart Watch Display Module (Black and Eco-friendly)]]


<br>
==Overview== 
Keyestudio Circular TFT LCD is a 1.6-inch TFT liquid crystal display module. Its input voltage is 3.3V~-5.5V. It can display colored patterns and text. <br>
The fastest LCD refresh on the module is about 256MS, which can realize multiple pattern loop display, and dynamic display effect. <br>
Currently, 19 common colors are defined in the library, and users can also customize 16-bit color codes. <br>
During the experiment, we set the coordinates to the coordinate center of the display, and the maximum absolute value of the positive and negative half axes is 64.<br>
In order to fix on other devices, the module comes with 2 positioning holes with a diameter of 3mm.<br>

<span style="color:red"> '''Special Note:''' <br>
The parameter 1.6" is marked according to the screen specifications provided by the screen supplier. The actual display area is approximately 1.26" (32mm in diameter).   </span> <br>
<br>[[File:Ks0454图片2.png|600px|frameless|thumb]]<br>  

<br>

== Technical Details ==
* Working voltage: DC 3.3V-5.5V
* Working current: 50MA
* Maximum power: 0.5W
* Resolution：128*RGB*128
* Operating temperature range: -25～+60℃
* Interface: 8pin header (2.54mm pitch)
* Fixing hole diameter: 3mm 
* Dimensions: 47mm*44mm*6mm
* Weight: 13.3g
* Environmental attributes: ROHS

<br>

== PINOUTS ==
<br>[[File:Ks0454图片4.png|600px|frameless|thumb]]<br>


<br>
== Connection == 
<br>[[File:Ks0454图片5.png|600px|frameless|thumb]]<br>      

<br>
== Test Code ==
<span style="color:red">  '''Note:''' before uploading the code, don’t forget to place the necessary library into Arduino IDE library directory. <br>
Here use the Arduino IDE 1.8.7 version. Not sure whether other versions are compatible.   </span> <br>
 
<pre>
#include "DFRobot_ST7687S_Latch.h"

#ifdef __AVR__
uint8_t pin_cs = 3, pin_rs = 5, pin_wr = 6, pin_lck = 7;
#else
uint8_t pin_cs = D3, pin_rs = D5, pin_wr = D6, pin_lck = D7;
#endif

DFRobot_ST7687S_Latch tft(pin_cs, pin_rs, pin_wr, pin_lck);

void setup(void)
{
  tft.begin();
  tft.fillScreen(DISPLAY_WHITE);
}

void loop(void)
{
  tft.drawTriangle(-20, -50, 0, 0, 50, 20, DISPLAY_ORANGE);  //draw triangle
  delay(1000);
  tft.fillTriangle(-20, -50, 0, 0, 50, 20, DISPLAY_ORANGE);  //fill triangle with color
  delay(1000);
  tft.fillScreen(DISPLAY_WHITE);
}
</pre>

<br>
<big>'''Debugging method:'''</big><br>
*<big>'''1.Adjust the color:'''</big>  <br>
currently define 19 commonly used colors, so you can direct to change the color name. <br>
For example: change the display color ORANGE into GREEN. <br>
Just change <span style="color:red">  tft.drawTriangle(-20, -50, 0, 0, 50, 20, DISPLAY_ORANGE); </span> <br>
into <span style="color:red">  tft.drawTriangle(-20, -50, 0, 0, 50, 20, DISPLAY_GREEN);  </span> <br>

<br>
We can also define the 4-bit hexadecimal or decimal '''(0~65535)''' color code to change the background color of the screen.<br>
'''Note:''' refer to the Hexadecimal color code; not all colors can be displayed. <br>
Like change <span style="color:red">  tft.drawTriangle(-20, -50, 0, 0, 50, 20, 0x000099FF);  </span> <br>
into <span style="color:red">  tft.drawTriangle(-20, -50, 0, 0, 50, 20, 39423);  </span><br>
Convert hexadecimal number into decimal number, in the range of 0~65535, can display the corresponding color. <br>

<br>
*<big>'''2.Set the pattern:'''</big> <br>
The coordinates are based on the center of the display, and the absolute value of the positive and negative half axes is 64. <br>
<span style="color:red">  tft.drawTriangle(-20, -50, 0, 0, 50, 20, DISPLAY_ORANGE);  </span><br>
In the code, draw a triangle with vertices of (-20, -50), (0, 0), (50, 20). <br>

<br>

== Test Result ==
Done uploading the code, TFT LCD will display the pattern. In the code, draw a triangle with vertices of (-20, -50), (0, 0), (50, 20), with orange border, and fill it with orange.
<br>[[File:Ks0454图片6.png|600px|frameless|thumb]]<br>  
<br>[[File:Ks0454图片7.png|600px|frameless|thumb]]<br>  


<br>

==Resource Download==

https://fs.keyestudio.com/KS0454


<br>

==Buy from ==
*[https://www.keyestudio.com/keyestudio-round-22inch-tft-lcd-display-module-for-arduino-watch-p0560.html  '''Official Website''']




<br>

[[category:Module]]