Hello Guys, In this blog we are going to interface 1.14 inch LCD with Raspberry Pi Pico RP2040 board. This LCD comes with inbuilt st7789 SPI driver, resolution of 240 x 135 pixels, 65K RGB colors with clear colorful IPS display where you can put your own creativity.
In this tutorial, I am going to fetch data from raspberry pi pico internal temperature sensor, then i will display fetched value to 1.14 inch lcd display.
Pinout
Connect 1.14 inch lcd with raspberry pi pico as shown in below pinout.
| 1.14 inch LCD | Pico Pins | Description |
|---|---|---|
| GND | GND | Ground Supply of pico |
| VCC | 3V3 / VBUS | Power Supply 3.3V - 5V DC (depending on module type) |
| DIN | GP11 | Serial Data Input / Output |
| CLK | GP10 | Serial Clock |
| CS | GP9 | Chip select input pin ("Low" enable) |
| DC | GP8 |
Display data / Command selection pin DC='1': Display data. DC='0': Command data |
| RST | GP12 | Reset Pin. Initialize the chip with a low input |
| BL | GP13 | Backlight Control. High: backlight on Low: backlight off. |
Installation Guide
- Make sure you have connected your 1.14" lcd as same as shown above pinout.
- Now press and hold BOOTSEL button on Pico and connect USB with your system (pc/laptop/Raspberry Pi). it will create a drive as RPI-RP2.
- Now download firmware.uf2 file from below link and drag and drop this file to that RPI-RP2 drive. It will reboot your pico.
- Now Open thonny ide, and select interpreter as "Micropython(Raspberry Pi Pico)".
- Create a new file, then paste below code and save it on pico or on your computer drive with .py extension. (for eg: ReadTemp.py).
- Finally click on green play button of thonny ide to start the program. It will print the internal temperature sensor value over thonny shel as well as on LCD with colorful blocks.
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