1.54inch tft display for pi zero made in china

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That"s why we publish this GamePi15, a full-functional game console expansion in the extreme compact size, tailored for the Raspberry Pi Zero/Zero W/Zero WH. Simply combine it with the Zero, now you get a literally "portable console", have fun anywhere anytime.

The ST7789 TFT module contains a display controller with the same name: ST7789. It’s a color display that uses SPI interface protocol and requires 3, 4 or 5 control pins, it’s low cost and easy to use. This display is an IPS display, it comes in different sizes (1.3″, 1.54″ …) but all of them should have the same resolution of 240×240 pixel, this means it has 57600 pixels. This module works with 3.3V only and it doesn’t support 5V (not 5V tolerant).

The ST7789 display module shown in project circuit diagram has 7 pins: (from right to left): GND (ground), VCC, SCL (serial clock), SDA (serial data), RES (reset), DC (or D/C: data/command) and BLK (back light).

As mentioned above, the ST7789 TFT display controller works with 3.3V only (power supply and control lines). The display module is supplied with 3.3V (between VCC and GND) which comes from the Arduino board.

To connect the Arduino to the display module, I used voltage divider for each line which means there are 4 voltage dividers. Each voltage divider consists of 2.2k and 3.3k resistors, this drops the 5V into 3V which is sufficient.

The first library is a driver for the ST7789 TFT display which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “st7789” and install the one from Adafruit).

testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);

testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ",ST77XX_WHITE);

So I then moved over to their pre-built RetroPie image you can download, everything functioned (with the exception of clicking in the joystick), but again around 5-10 frames per second in game. So poor that game play is not feasible.

This is actually a common issue with the SPI driven screens, and the reason why fbcp-ili9341 was written. When I reached out to the manufacturer they pointed me in the same direction, to the ili9341 community driver for high frame rates and game play (below is the snip from their email)

Also, I was able to locate a bug report in the git repository for an Adafruit 1.54 display on a Pi Zero, I"m assuming the 1.54 displays are fairly similar and looks like they are having an issue with the driver and the Pi Zero

CODE EXAMPLES and DEFINITIONS#define TFT_CS        17  #define TFT_RST       21  #define TFT_DC        16  #define TFT_MOSI      19  #define TFT_SCLK      18  #define TFT_BACKLIGHT 20 //Display backlight pin   #define speaker      0  byte colPins[COLS] = {1, 2, 3, 4, 5}; //connect to the column pinouts of the keypad extra cursor keys 14byte rowPins[ROWS] = {6, 9, 15, 8, 7, 22}; //row pinouts of the keypadchar directKeys[ROWS][COLS] = {  {KEY_RETURN, " ", "m", "n", "b",},  {KEY_DELETE, "l", "k", "j", "h",},  {"p", "o", "i", "u", "y",},  {KEY_SHIFT, "z", "x", "c", "v",},  {"a", "s", "d", "f", "g",},  {"q", "w", "e", "r", "t",}  };

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.