stm32f103 tft lcd library made in china

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3. Some controller chips can operate in more than one mode eg spi/8bit/16bit or external/internal framebuffer. The lcd module you buy will usually be hardwired to operate in a particular mode with no ability to change it. Make sure you get not only the controller you want but also that controller configured in the way you want to use it. Often the choice of the lcd module is what drives all the other decisions.

The above discussion is of course very generic. Knowing more about what you are trying to achieve and what your budget is, or a list of lcd modules you are thinking of, could help us give more specific advice.

Since the fingerprint module manufacturer provides a demo program for STM32F103 series microcontrollers, I bought a small development board based on STM32F103C8T6.

The demo program of the fingerprint module uses LED lights to prompt the user to enter the fingerprint and compare the status (success or failure). But I want to use an LCD display, so I chose a 480×272 resolution serial LCD display. The specific model of this display is STONE STVC050WT-01, which communicates with MCU through UART, and will be covered in later chapters.

In this project, I would like to use STONE STVC050WT-01 TFT LCD to display the status of the fingerprint module (entry status, comparison status and deletion of fingerprint data). This display comes with a driver chip, and development software is provided for user interface development. The user simply needs to add the designed UI picture through the software as well as any button or text box as needed, and then generate the configuration file to flash into the display.

The STM32F103C8T6 development board and STVC050WT-01 TFT-LCD display are connected through UART, and then the STM32F103C8T6 development board and fingerprint module are also connected through UART.

JoaoLopes’s library supports ILI9341, and this one probably is an ILI9341. I checked the SPFD5408 datasheet, and Joao’s library definitely isn’t for SPFD5408. I wonder why he named it so.

Joao Lopes’s library above uses a modified version of the Adafruit TFT library for the hardware layer. The Adafruit TFT library was originally for controlling ILIxxxx series of IC, but this guy modified it for the 8 bit interface of SPFD508.

Now, I’ve seen working code examples for STM32 for the ILIxxxx on Andy’s Workshop blog http://andybrown.me.uk/2012/01/01/stm32 … ft-driver/. So I’m tracking where Joao changed the Adafruit library to try and figure out how to modify an STM32 driver for this TFT.

Okay, I did a git diff on the SPFD5408 library and the Adafruit TFTLCD (for ILI9325 in 8 bit mode) library. Only one thing has been changed, and that is the readID function (it reads a register to identify the chip) which isn’t a big change at all. So I think an STM32 8 bit interface library for ILI9325 should work for the SPFD5408 as well. I’ll look for one or modify andy’s workshop code.

martinayotte wrote:I have an 3.5″ LCD from MCUFriend which looks almost the same as the one above, and I used some parallel 8bits code which use ILI9327 commands.

And also developed a touch screen lib which has some nice features (repeated touch, double touch), check the tftpaint.ino example of the touch library for details.

Theoretically they should give 2500mAh, I will be satisfied if I get 1500mAh out of them, this would mean 12h of 120mA (current consumption of TFT+blue pill).

If you post the defines that you have used in LCD_ID_readreg, I will know your wiring scheme and that it works! I can post a SPECIAL for you. And you can test it. The MapleMini is supported by both Roger’s MapleCore and the Core from ST.

I would get familiar with the basic TFT and GFX methods first. The existing TouchScreen libraries all have issues with Due, Zero, STM32, Teensy, … generally due to pinMode() and digitalWrite() “optimisations”.

I have a tft lcd shield. when I run it use arduino uno, it show me that identifier is ili9325 and works well but when I run it use STM32 blue pill, and this library:

I have run STM32F103 on IteadMaple, Nucleo-F103, and two BluePills. One of the BluePills has its data bus on PA0-PA7. And the Write Cycle is as short as the STM32F103 can possibly make it.

I did it. Pins PA11 PA12 PA15 PB3 PB4 didn’t toggle. I have 2 boards and I test both of them but these pins had problem in both. how can I fix it or change pins in the library????

it do not show until you READ ID of screen. Use LCD_ID_readreg.ino Paste your LCD_ID_readreg.ino example and make photo of your connection to blue pill.

The MCUFRIEND_kbv library is designed for 8-bit Shields. I know that LCD_RD is plugged into Analog #0 pin. Hence my list of #defines in the Readreg sketch.

The MCUFRIEND_kbv library is designed for 8-bit Shields. I know that LCD_RD is plugged into Analog #0 pin. Hence my list of #defines in the Readreg sketch.

It make sense to feed the display with 5V because the regulator on blue pill is not strong enough to deliver the necessary current for the background light of the LCD.

A library for driving self-timed digital RGB/RGBW LEDs (WS2812, SK6812, NeoPixel, WS2813, etc.) using the Espressif ESP32 microcontroller"s RMT output peripheral.

LiquidCrystal fork for displays based on HD44780. Uses the IOAbstraction library to work with i2c, PCF8574, MCP23017, Shift registers, Arduino pins and ports interchangably.

The most powerful and popular available library for using 7/14/16 segment display, supporting daisy chaining so you can control mass amounts from your Arduino!

A simple library to display numbers, text and animation on 4 and 6 digit 7-segment TM1637 based display modules. Offers non-blocking animations and scrolling!

Monochrome LCD, OLED and eInk Library. Display controller: SSD1305, SSD1306, SSD1309, SSD1312, SSD1316, SSD1318, SSD1320, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1108, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1617, UC1638, UC1701, ST7511, ST7528, ST7565, ST7567, ST7571, ST7586, ST7588, ST75160, ST75256, ST75320, NT7534, ST7920, IST3020, IST3088, IST7920, LD7032, KS0108, KS0713, HD44102, T7932, SED1520, SBN1661, IL3820, MAX7219, GP1287, GP1247, GU800. Interfaces: I2C, SPI, Parallel.

True color TFT and OLED library, Up to 18 Bit color depth. Supported display controller: ST7735, ILI9163, ILI9325, ILI9341, ILI9486,LD50T6160, PCF8833, SEPS225, SSD1331, SSD1351, HX8352C.

This library enables you to use ISR-based PWM channels on AVR ATmega164, ATmega324, ATmega644, ATmega1284 with MCUdude MightyCore, to create and output PWM any GPIO pin

This library enables you to use Hardware-based PWM channels on Arduino AVR ATtiny-based boards (ATtiny3217, etc.), using megaTinyCore, to create and output PWM to pins.

This library enables you to use ISR-based PWM channels on Arduino AVR ATtiny-based boards (ATtiny3217, etc.), using megaTinyCore, to create and output PWM any GPIO pin.

Write decimal numbers, hex numbers, temperature, clock digits, characters, and strings to the seven segment LED modules supported by the AceSegment library.

This library allows to read a value from an analog input like an potentiometer, or from a digital input like an encoder. Moreover, allows to write it on digital output, exactly on PWM pin.

Simple Async HTTP Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of AsyncTCP library for ESP32/S2/S3/C3, WT32_ETH01 (ESP32 + LAN8720), ESP32 using LwIP ENC28J60, W5500 or LAN8720.

Simple Async HTTP Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of AsyncTCP libraries, such as AsyncTCP, ESPAsyncTCP, AsyncTCP_STM32, etc.. for ESP32 (including ESP32_S2, ESP32_S3 and ESP32_C3), WT32_ETH01 (ESP32 + LAN8720), ESP32 with LwIP ENC28J60, ESP8266 (WiFi, W5x00 or ENC28J60) and currently STM32 with LAN8720 or built-in LAN8742A Ethernet.

Simple Async HTTP Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of AsyncTCP_RP2040W library for RASPBERRY_PI_PICO_W with CYW43439 WiFi.

Simple Async HTTPS Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of AsyncTCP_SSL library for ESP32/S2/S3/C3, WT32_ETH01 (ESP32 + LAN8720), ESP32 using LwIP ENC28J60, W5500 or LAN8720.

Simple Async HTTPS Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of AsyncTCP_SSL library for ESP32 (including ESP32_S2, ESP32_S3 and ESP32_C3), WT32_ETH01 (ESP32 + LAN8720) and ESP32 with LwIP ENC28J60.

Fully Asynchronous UDP Library for ESP8266 using W5x00 or ENC28J60 Ethernet. The library is easy to use and includes support for Unicast, Broadcast and Multicast environments.

Fully Asynchronous UDP Library for RASPBERRY_PI_PICO_W using CYW43439 WiFi with arduino-pico core. The library is easy to use and includes support for Unicast, Broadcast and Multicast environments.

Fully Asynchronous UDP Library for Teensy 4.1 using QNEthernet. The library is easy to use and includes support for Unicast, Broadcast and Multicast environments.

This library provides a low-level facility for context switching between multiple threads of execution and contains an implementation of asymmetric stackful coroutines on an AVR micro-controller.

The last hope for the desperate AVR programmer. A small (344 bytes) Arduino library to have real program traces and to find the place where your program hangs.

This library enables you to use Hardware-based PWM channels on AVR-based boards, such as Nano, UNO, Mega, Leonardo, 32u4, etc., to create and output PWM.

This library enables you to use ISR-based PWM channels on AVR-based boards, such as Mega-2560, UNO,Nano, Leonardo, etc., to create and output PWM any GPIO pin.

An Arduino library that takes input in degrees and output a string or integer for the 4, 8, 16, or 32 compass headings (like North, South, East, and West).

DDNS Update Client Library for SAM DUE, nRF52, SAMD21/SAMD51, STM32F/L/H/G/WB/MP1, AVR Mega, megaAVR, Teensy, RP2040-based RASPBERRY_PI_PICO, WT32_ETH01, Portenta_H7, etc. besides ESP8266/ESP32, using ESP8266-AT/ESP32-AT WiFi, WiFiNINA, Ethernet W5x00, ENC28J60, LAN8742A or Teensy NativeEthernet

Library to detect a double reset, using EEPROM, DueFlashStorage, FlashStorage_SAMD, FlashStorage_RTL8720, FlashStorage_STM32 or LittleFS/InternalFS. For AVR, Teensy, SAM DUE, SAMD, STM32F/L/H/G/WB/MP1, nRF52, RP2040-based Nano_RP2040_Connect, RASPBERRY_PI_PICO, RTL8720DN, MBED nRF52840-based Nano_33_BLE, Portenta_H7, etc. boards. Now using efficient FlashStorage_STM32 library and supporting new RP2040-based Nano_RP2040_Connect, Portenta_H7, RASPBERRY_PI_PICO and STM32 core v2.0.0

This library enables you to use Hardware-based PWM channels on Arduino AVRDx-based boards (AVR128Dx, AVR64Dx, AVR32Dx, etc.), using DxCore, to create and output PWM.

This library enables you to use ISR-based PWM channels on Arduino AVRDx-based boards (AVR128Dx, AVR64Dx, AVR32Dx, etc.), using DxCore, to create and output PWM any GPIO pin.

Small and easy to use Arduino library for using push buttons at INT0/pin2 and / or any PinChangeInterrupt pin.Functions for long and double press detection are included.Just connect buttons between ground and any pin of your Arduino - that"s itNo call of begin() or polling function like update() required. No blocking debouncing delay.

Arduino library for controlling standard LEDs in an easy way. EasyLed provides simple logical methods like led.on(), led.toggle(), led.flash(), led.isOff() and more.

OpenTherm Library to control Central Heating (CH), HVAC (Heating, Ventilation, Air Conditioning) or Solar systems by creating a thermostat using Arduino IDE and ESP32 / ESP8266 hardware.

This library providing the possibility to call a function at specific ESP32 Control module.This library support all version of ESP32 Control module,ERS ,E1.0

This library providing the possibility to call a function at specific ESP32 Control module.This library support all version of ESP32 Control module,ERS ,E1.0

A library for driving self-timed digital RGB/RGBW LEDs (WS2812, SK6812, NeoPixel, WS2813, etc.) using the Espressif ESP32 microcontroller"s RMT output peripheral.

ESP32LitePack, M5Lite, A lightweight compatibility library. Support Devices:M5StickC, M5StickC Plus, M5Stack BASIC, M5Stack GRAY, M5Stack FIRE, M5Stack Core2, M5Stack ATOM Lite, M5Stack ATOM Matrix, M5Stack ATOM ECHO

Simple library for sending and recieving booleans, bytes, integers, and float variables over UDP. The esp32 can be connected to a wifi network or create its own hotspot.

This library enables you to use Interrupt from Hardware Timers on an ESP32, ESP32_S2, ESP32_S3 or ESP32_C3-based board to create and output PWM to pins.

Simple WebServer library for AVR, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52, SIPEED_MAIX_DUINO and RP2040-based (RASPBERRY_PI_PICO) boards using ESP8266/ESP32 AT-command shields with functions similar to those of ESP8266/ESP32 WebServer libraries

An ESP8266/ESP32-AT library for Arduino providing an easy-to-use way to control ESP8266-AT/ESP32-AT WiFi shields using AT-commands. For AVR, Teensy, SAM DUE, SAMD21, SAMD51, STM32, nRF52, SIPEED_MAIX_DUINO and RP2040-based (Nano_RP2040_Connect, RASPBERRY_PI_PICO, etc.) boards using ESP8266/ESP32 AT-command shields.

Library to detect a multi reset within a predetermined time, using RTC Memory, EEPROM, LittleFS or SPIFFS for ESP8266 and ESP32, ESP32_C3, ESP32_S2, ESP32_S3

Library to configure MultiWiFi/Credentials at runtime for ESP32 (including ESP32-S2, ESP32-S3 and ESP32-C3) and ESP8266 boards. With enhanced GUI and fallback web ConfigPortal.

Simple Ethernet WebServer, HTTP Client and WebSocket Client library for AVR, AVR Dx, Portenta_H7, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52 and RASPBERRY_PI_PICO boards using Ethernet shields W5100, W5200, W5500, ENC28J60 or Teensy 4.1 NativeEthernet/QNEthernet

Simple TLS/SSL Ethernet WebServer, HTTP Client and WebSocket Client library for for AVR, Portenta_H7, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52 and RASPBERRY_PI_PICO boards using Ethernet shields W5100, W5200, W5500, ENC28J60 or Teensy 4.1 NativeEthernet/QNEthernet. It now supports Ethernet TLS/SSL Client.

Simple TLS/SSL Ethernet WebServer, HTTP Client and WebSocket Client library for STM32F/L/H/G/WB/MP1 boards running WebServer using built-in Ethernet LAN8742A, Ethernet LAN8720, W5x00 or ENC28J60 shields. It now supports Ethernet TLS/SSL Client.

EthernetWebServer_STM32 is a simple Ethernet WebServer, HTTP Client and WebSocket Client library for STM32F/L/H/G/WB/MP1 boards using built-in Ethernet LAN8742A, LAN8720, Ethernet W5x00 or ENC28J60 shields

Simple Ethernet library for AVR, AVR Dx, Portenta_H7, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52 and RASPBERRY_PI_PICO boards using Ethernet shields W5100, W5200, W5500, W5100S

ezTime - pronounced "Easy Time" - is a very easy to use Arduino time and date library that provides NTP network time lookups, extensive timezone support, formatted time and date strings, user events, millisecond precision and more.

ESP32 VGA, PAL/NTSC Color Composite, SSD1306 ILI9341 ST7789 Controller, PS/2 Mouse and Keyboard Controller, Graphics Library, Graphical User Interface (GUI), Sound Engine, Game Engine and ANSI/VT Terminal

A library for implementing fixed-point in-place Fast Fourier Transform on Arduino. It sacrifices precision and instead it is way faster than floating-point implementations.

The FlashStorage_RTL8720 library aims to provide a convenient way to store and retrieve user data using the non-volatile flash memory of Realtek RTL8720DN, RTL8722DM, RTM8722CSM, etc.

The FlashStorage library aims to provide a convenient way to store and retrieve user"s data using the non-volatile flash memory of SAMD21/SAMD51. It"s using the buffered read and write to minimize the access to Flash. It now supports writing and reading the whole object, not just byte-and-byte.

The FlashStorage_STM32 library aims to provide a convenient way to store and retrieve user data using the non-volatile flash memory of STM32F/L/H/G/WB/MP1. It is using the buffered read and write to minimize the access to Flash. It now supports writing and reading the whole object, not just byte-and-byte. New STM32 core v2.0.0+ is also supported now.

The FlashStorage_STM32F1 library aims to provide a convenient way to store and retrieve user"s data using the non-volatile flash memory of STM32F1/F3. It"s using the buffered read and write to minimize the access to Flash. It now supports writing and reading the whole object, not just byte-and-byte. New STM32 core v2.0.0+ is supported now.

The GCodeParser library is a lightweight G-Code parser for the Arduino using only a single character buffer to first collect a line of code (also called a "block") from a serial or file input and then parse that line into a code block and comments.

This library is for the Great Lunar Expedition for Everyone mission, which will provide accessible opportunities for students to directly participate in Lunar exploration.

Arduino library for the Flysky/Turnigy RC iBUS protocol - servo (receive) and sensors/telemetry (send) using hardware UART (AVR, ESP32 and STM32 architectures)

An Arduino library to control the Iowa Scaled Engineering I2C-IRSENSE ( https://www.iascaled.com/store/I2C-IRSENSE ) reflective infrared proximity sensor.

This library provides an interface to control a stepper motor through Infineon’s Stepper Motor Control Shield "KIT_XMC1300_IFX9201" with h-bridge IFX9201 and XMC1300 microcontroller.

This library uses polymorphism and defines common interfaces for reading encoders and controlling motors allowing for easy open or closed loop motor control.

Convinient way to map a push-button to a keyboard key. This library utilize the ability of 32u4-based Arduino-compatible boards to emulate USB-keyboard.

This library allows you to easily create light animations from an Arduino board or an ATtiny microcontroller (traffic lights, chaser, shopkeeper sign, etc.)

Light-weight implementation of LinkedList library, that is now stripped down to bare minimum, making it appropriate for use in memory-critical environments.

LiquidCrystal fork for displays based on HD44780. Uses the IOAbstraction library to work with i2c, PCF8574, MCP23017, Shift registers, Arduino pins and ports interchangably.

LittleFS for esp32 based on esp_littlefs IDF component. Use esp32 core-provided LITTLEFS library instead of this one when available in future core releases.

An all in one, easy to use, powerful, self contained button library so you can focus on your other code! Includes Debouncing, Avoids Delays, multiclicks and allows you to decide what happens at the beginning and end of Short, Long, Hold and Shifts so you can create a intuative and responsive experience.

This library enables you to use ISR-based PWM channels on RP2040-based boards, such as Nano_RP2040_Connect, RASPBERRY_PI_PICO, with Arduino-mbed (mbed_nano or mbed_rp2040) core to create and output PWM any GPIO pin.

Arduino library for MCP4728 quad channel, 12-bit voltage output Digital-to-Analog Convertor with non-volatile memory and I2C compatible Serial Interface

mDNS Library for ESP32, ESP8266, nRF52, SAMD21, SAMD51, SAM DUE, STM32F/L/H/G/WB/MP1, Portenta_H7, AVR Mega, RP2040-based boards, etc. using Ethernet W5x00, ESP WiFi, WiFiNINA or ESP8266-AT shields

This library enables you to use Hardware-based PWM channels on megaAVR-based boards, such as UNO WiFi Rev2, AVR_Nano_Every, etc., to create and output PWM.

This library enables you to use ISR-based PWM channels on an Arduino megaAVR board, such as UNO WiFi Rev2, AVR_Nano_Every, etc., to create and output PWM any GPIO pin.

A library package for ARDUINO acting as ModBus slave communicating through UART-to-RS485 converter. Originally written by Geabong github user. Improved by Łukasz Ślusarczyk.

Library to detect a multi reset, using EEPROM, DueFlashStorage, FlashStorage_SAMD, FlashStorage_RTL8720, FlashStorage_STM32 or LittleFS/InternalFS. For AVR, Teensy, SAM DUE, SAMD, STM32F/L/H/G/WB/MP1, nRF52, RP2040-based Nano_RP2040_Connect, RASPBERRY_PI_PICO, RTL8720DN, MBED nRF52840-based Nano_33_BLE, Portenta_H7, etc. boards. Now using efficient FlashStorage_STM32 library and supporting new RP2040-based Nano_RP2040_Connect, RASPBERRY_PI_PICO and STM32 core v2.0.0

Connects to MySQL or MariaDB using ESP8266/ESP32, WT32_ETH01 (ESP32 + LAN8720A), nRF52, SAMD21/SAMD51, STM32F/L/H/G/WB/MP1, Teensy, SAM DUE, Mega, RP2040-based boards, Portenta_H7, etc. with W5x00, ENC28J60 Ethernet, Teensy 4.1 NativeEthernet/QNEthernet, WiFiNINA modules/shields or Portenta_H7 WiFi/Ethernet. W5x00 can use Ethernet_Generic library. ENC28J60 can use either EthernetENC or UIPEthernet Library.

This library enables you to use ISR-based PWM channels on an nRF52-based board using Arduino-mbed mbed_nano core such as Nano-33-BLE to create and output PWM any GPIO pin.

This library enables you to use ISR-based PWM channels on an nRF52-based board using Adafruit_nRF52_Arduino core such as Itsy-Bitsy nRF52840 to create and output PWM any GPIO pin.

An Arduino library for the Nano 33 BLE Sense that leverages Mbed OS to automatically place sensor measurements in a ring buffer that can be integrated into programs in a simple manner.

The library for OpenBCI Ganglion board. Please use the DefaultGanglion.ino file in the examples to use the code that ships with every Ganglion board. Look through the skimmed down versions of the main firmware in the other examples.

A library written in C++ to encode/decode PDU data for GSM modems. Both GSM 7-bit and UCS-2 16 bit alphabets are supported which mean, in practice, you can send/receive SMS in any language (including emojis).

Simple Async HTTP Request library, supporting GET, POST, PUT, PATCH, DELETE and HEAD, on top of Portenta_H7_AsyncTCP library for Portenta_7, using Vision-shield thernet or Murata WiFi.

his library enables you to use Hardware-based PWM channels on RP2040-based boards, such as Nano_RP2040_Connect, RASPBERRY_PI_PICO, with either Arduino-mbed (mbed_nano or mbed_rp2040) or arduino-pico core to create and output PWM to any GPIO pin.

This library enables you to use SPI SD cards with RP2040-based boards such as Nano_RP2040_Connect, RASPBERRY_PI_PICO using either RP2040 Arduino-mbed or arduino-pico core.

This library enables you to use ISR-based PWM channels on RP2040-based boards, such as ADAFRUIT_FEATHER_RP2040, RASPBERRY_PI_PICO, etc., with arduino-pico core to create and output PWM any GPIO pin.

This library enables you to use Interrupt from Hardware Timers on SAMD-based boards such as SAMD21 Nano-33-IoT, Adafruit SAMD51 Itsy-Bitsy M4, SeeedStudio XIAO, Sparkfun SAMD51_MICROMOD, etc.

The most powerful and popular available library for using 7/14/16 segment display, supporting daisy chaining so you can control mass amounts from your Arduino!

Enables smooth servo movement. Linear as well as other (Cubic, Circular, Bounce, etc.) ease movements for servos are provided. The Arduino Servo library or PCA9685 servo expanders are supported.

Use the low-power high-resolution ICM 20948 9 DoF IMU from Invensense with I2C or SPI. Version 1.2 of the library includes support for the InvenSense Digital Motion Processor (DMP™).

Enables reading and writing on SD card using SD card slot connected to the SDIO/SDMMC-hardware of the STM32 MCU. For slots connected to SPI-hardware use the standard Arduino SD library.

Menu library for Arduino with IoT capabilities that supports many input and display devices with a designer UI, code generator, CLI, and strong remote control capability.

This library enables you to use Hardware-based PWM channels on Teensy boards, such as Teensy 2.x, Teensy LC, Teensy 3.x, Teensy 4.x, Teensy MicroMod, etc., to create and output PWM to pins. Using the same functions as other FastPWM libraries to enable you to port PWM code easily between platforms.

This library enables you to use ISR-based PWM channels on Teensy boards, such as Teensy 2.x, Teensy LC, Teensy 3.x, Teensy 4.x, Teensy MicroMod, etc., to create and output PWM any GPIO pin.

A library for creating Tickers which can call repeating functions. Replaces delay() with non-blocking functions. Recommanded for ESP and Arduino boards with mbed behind.

This library enables you to use Interrupt from Hardware Timers on an Arduino, Adafruit or Sparkfun AVR board, such as Nano, UNO, Mega, Leonardo, YUN, Teensy, Feather_32u4, Feather_328P, Pro Micro, etc.

This library enables you to use Interrupt from Hardware Timers on supported Arduino boards such as AVR, Mega-AVR, ESP8266, ESP32, SAMD, SAM DUE, nRF52, STM32F/L/H/G/WB/MP1, Teensy, Nano-33-BLE, RP2040-based boards, etc.

A simple library to display numbers, text and animation on 4 and 6 digit 7-segment TM1637 based display modules. Offers non-blocking animations and scrolling!

I2C EEPROM library. Split from uRTCLib https://github.com/Naguissa/uRTCLib - This library controls any I2C EEPROM, independent ones or incorporated on DS1307 or DS3231 RTCs.

Really tiny library to basic RTC functionality on Arduino. DS1307, DS3231 and DS3232 RTCs are supported. See https://github.com/Naguissa/uEEPROMLib for EEPROM support. Temperature, Alarms, SQWG, Power lost and RAM support.

Monochrome LCD, OLED and eInk Library. Display controller: SSD1305, SSD1306, SSD1309, SSD1312, SSD1316, SSD1318, SSD1320, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1108, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1617, UC1638, UC1701, ST7511, ST7528, ST7565, ST7567, ST7571, ST7586, ST7588, ST75160, ST75256, ST75320, NT7534, ST7920, IST3020, IST3088, IST7920, LD7032, KS0108, KS0713, HD44102, T7932, SED1520, SBN1661, IL3820, MAX7219, GP1287, GP1247, GU800. Interfaces: I2C, SPI, Parallel.

True color TFT and OLED library, Up to 18 Bit color depth. Supported display controller: ST7735, ILI9163, ILI9325, ILI9341, ILI9486,LD50T6160, PCF8833, SEPS225, SSD1331, SSD1351, HX8352C.

A rotary encoder library that allows the callback of up to 9 different functions representing the same number of different encoder events. These different functions can be associated with events like press rotate and long press among many others.

RFC6455-based WebSockets Server and Client for Arduino boards, such as nRF52, Portenta_H7, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, Teensy, SAM DUE, RP2040-based boards, besides ESP8266/ESP32 (ESP32, ESP32_S2, ESP32_S3 and ESP32_C3) and WT32_ETH01. Ethernet shields W5100, W5200, W5500, ENC28J60, Teensy 4.1 NativeEthernet/QNEthernet or Portenta_H7 WiFi/Ethernet. Supporting websocket only mode for Socket.IO. Ethernet_Generic library is used as default for W5x00. Now supporting RP2040W

Enables network connection (local and Internet) and WiFiStorage for SAM DUE, SAMD21, SAMD51, Teensy, AVR (328P, 32u4, 16u4, etc.), Mega, STM32F/L/H/G/WB/MP1, nRF52, NINA_B302_ublox, NINA_B112_ublox, RP2040-based boards, etc. in addition to Arduino MKR WiFi 1010, Arduino MKR VIDOR 4000, Arduino UNO WiFi Rev.2, Nano 33 IoT, Nano RP2040 Connect. Now with fix of severe limitation to permit sending much larger data than total 4K and using new WiFi101_Generic library

Simple WiFiWebServer, HTTP Client and WebSocket Client library for AVR Mega, megaAVR, Portenta_H7, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52, RP2040-based (Nano-RP2040-Connect, RASPBERRY_PI_PICO, RASPBERRY_PI_PICO_W, ESP32/ESP8266, etc.) boards using WiFi, such as WiFiNINA, WiFi101, CYW43439, U-Blox W101, W102, ESP8266/ESP32-AT modules/shields, with functions similar to those of ESP8266/ESP32 WebServer libraries.

Simple WiFiWebServer, HTTP Client, MQTT and WebSocket Client library for Realtek RTL8720DN, RTL8722DM, RTM8722CSM boards using WiFi. Supporting WiFi at 2.4GHz and 5GHz

According to my experence for another 2.2" LCD display with D/C Pin, I am using CD4050BE to convert the UNO pin 5v to 3.3v to fit to the TFT signal standard.

#define S6DLCD_DATAPORT_INPUT _S6DLCD_DATAPORT_ODR_ = (0xFFFF << S6DLCD_DATAPORT_OFFSET),_S6DLCD_DATAPORT_PER_ = (0xFFFF << S6DLCD_DATAPORT_OFFSET)

I am particularly fond of the SPI interface because it uses a minimum number of I/O pins. This means that since even a minimal Arduino (one based on an ATmega328) can drive a low-cost TFT with I/O left for other tasks, the cost may be kept down. Nowadays, it is realistic to implement a basic Arduino with a 2.2″ TFT for less than 10€. An ATmega328 with an Arduino bootloader goes for 1,50€ on Ebay, a 2.2″ SPI TFT goes for about 3,50€, so “vintage” character LCDs are definitely on their way out.

Obviously, you need the TFT display itself. I don’t care where you buy it from – you may get it from Adafruit or SparkFun or iTead or any one of the “big name” shops or you may get it from Ebay (a.k.a. “China”). In my experience, it doesn’t really matter as long as you know what you are purchasing. For example, on Ebay when you search for 2.4″ SPI TFT LCD you will come across this:

They are essentially the same TFTs, but the first one is ~1€ cheaper than the second one. The difference is the PCB that is included. Do not underestimate this PCB. If you go for the plain TFT you will have to solder it to a suitable PCB like this one:

But let’s backtrack just a bit. How does one select a TFT? Surely, one would think that size and resolution are the most important factors. I say sure, as long as you have the software part covered. In order to actually show stuff on a TFT you need an appropriate library. You should not take for granted that such a library indeed exists for that gorgeous hi-res IPS TFT that you found for 10€ on Ebay. Many sellers on Ebay just write the word “arduino” on the TFT’s description without giving it much serious thought. Plus you should expect zero (0) support from most Ebay sellers. Most of them can’t and won’t help you if you run into trouble with your code.

So, you should always do a little research. Google is your friend. A good start is Karlsen Henning’s UTFT library. Being billed as a Universal TFT Library it does indeed support a large number of TFT controllers. If your display’s controller is included in UTFT’s compatibility list, you are somewhat covered. I say somewhat because UTFT is not always the best choice since it has a pretty heavy footprint. It will consume the better part of an ATmega328’s flash memory capacity. Fortunately, there are other libraries out there. I will go into more detail later on.

So, you got a TFT and are faced with the task of hooking it up to the Arduino. Relax, it’s simple. You only need to connect 4 or 5 wires, plus power and GND. Let’s start with the basics.

1) Power (Vcc). Most displays need 3.3V to function. This is a requirement of the TFT panel itself as well as of the driver IC that is always part of the assembly (it is an embedded part – you can not really see it). But as you probably know, most Arduinos run on 5V. Display manufacturers that make products for Arduino of course know that and usually include an on-board regulator that takes 5V as input and gives the necessary 3.3V. In most cases there is a selector on the PCB (jumper, solder bridge, or something) that lets you configure the board for 5 or 3.3 volt operation. Look out for that.

2) LED power. This pin controls the backlight of the TFT panel. It consists of a number of LEDs, depending on the size of the LCD panel. Bigger panel means more LEDs and thus more power consumption. It is usually connected to GND or to 5V/3.3V. Some times a current limiting resistor is also necessary. Other times the resistor is built-in and so is a mosfet that allows you to adjust the LED backlight’s brightness by connecting it to a pin that supports PWM (some of the more expensive TFTs support this). In any case, read the manual. You may come across a Chinese TFT that you had to have but then noticed that it has sparse if any documentation. If this happens, play it safe by connecting the LED pin to GND through a resistor (a few hundred ohms is usually a good starting point). If it lights, it means that the polarity is OK. If it does not, try applying 5 or 3.3V to it (through the resistor). If it lights but is too dim, use a smaller resistor. Usually each LED draws about 10-15mA, so if you know how many LEDs your TFT uses you can estimate its power draw and thus select a proper resistor.

A special note here: Signalling is usually done at 3.3V unless the TFT’s manufacturer has implemented some kind of level shifting on board the PCB. This level shifting may be done by an IC (best case), or a bunch of transistors and resistors (fair enough..) or just 1.2K resistors (a bit of a kludge, but it usually works). It is important to be careful not to send 5V into a TFT that only supports 3.3V logic because in that case you will most likely damage the TFT.

At this point you need to take a break from the hardware and consider the software, since your choice of library will dictate the particulars of the next step, which is the connection of the signal wires to the Arduino.

Ugly (blocky) fonts if you scale them to a non-native size. This is being fixed by 3rd party code that now supports a small number of proportional fonts but is nowhere near as versatile as UTFT’s code.

Depending on your choice of library, you may need to use the hardware SPI pins for CLK and MOSI or you may be free to use any pins you like. It really just depends on the library.

You may notice that most libraries say that you can just connect the TFT Reset pin to the Arduino Reset Pin. If you do that, you should put 0 as the reset pin.

It provides an affordable (about $2 on eBay) and flexible way for users to try out new ideas and build prototypes. The board is equipped with an STM32F103C8T6 microcontroller compatible with the NUCLEO-F103RB platform.

Because neither lbr nor zip files can be uploaded to mbed wiki pages anymore, to download the Eagle CAD library right-click on the following link eagle library and select Save link as.... Once saved to your local drive, change the extension from png to lbr.

Keep in mind that the online compiler is checking for 128kB maximum flash size. However, the STM32F103C8T6 is equipped with only 64kB. Although it seems that majority of Blue Pill boards sold online usually feature 128kB Flash rather than 64kB. Once the compilation is complete (started by clicking on the Build only button in the Compile drop list or by pressing Ctrl+B) you can visually check the size of used flash memory in the Program details - Build tab. In order to fit into an STM32F103C8T6 board the used Flash should not exceed 64kB (depending on your actual board). Try to optimize your program until it"s using less than 64kB flash memory. Have a look at mbed-STM32F030F4 and Andy"s hints for some good tips.

You can use the NUCLEO virtual disk to program the STM32F103C8T6 board (drag and drop programming). To do that, an additional NUCLEO board is needed (any type equipped with ST-LINK/V2-1 will do).

Please notice that VDD_TARGET is not connected. That works with the ST-Link programmer but could potentially damage the target micro controller in case it"s running at a lower voltage (e.g. 2V5) than the programmer (e.g. 3V3). That"s why it"s recommended to connect also the VDD_TARGET line when an external programmer such as a Segger J-Link is hooked up to program the board.Provide power for the STM32F103C8T6 board through a 3.3V pin, 5V pin or over a USB cable. (The VDD_TARGET pin on the NUCLEO board CON4 does not work as source of power).

In case you would like to spare the external USB-Serial converter for other purposes then there is available an alternative solution proposed by X M (bitman). You can use the ST-Link virtual com port also for debugging of programs running on the STM32F103C8T6 board. However, that will require a soldering iron (and probably some soldering skills). According to the User Manual, chapter

6.8 "USART communication", solder bridges (on the back side of the NUCLEO board) SB62 and SB63 should be ON, SB13 and SB14 should be OFF. In such case it is possible to connect another USART to the NUCLEO (ST-Link) CN3 connector using flying wires. For instance on STM32F103C8T6 board it is possible to use USART2 available on PA_2 (TX) and PA_3 (RX). Two flying wires shall be connected as follows:

Works great on Linux (Ubuntu) and MS Windows. It"s fully integrated with Mbed CLI and supprots all the Mbed enabled targets. To build for the Blue Pill you can select BLUEPILL_F103C8 or NUCLEO_F103RB as your target, depending on the Flash size actually available on your Blue Pill board. To reduce the size of used static RAM and Flash try to select the small library for your project rather than the standard one. That can be achieved by modifying the mbed_app.json file (Ctrl+O) as below: