Connect to your Open-Smart pins correctly and it will read the ID ok.LCDRDPB0, LCDWRPB6, LCDRSPB7, LCDCSPB8, LCDRSTPB9 e.g.LCDD0 - LCDD7 PA0 - PA7.Tried the TouchScreenCalibrnative.ino example.
Did not find the documentation for PINS according to the STM32F103C and HX8352A TFT LCD. But the TouchScreen library will work if you use the correct constructor. To overcome this, have applied the delay(20) before tft.begin(ID) in graphictestkbv.ino sketch, but it is not consistent, sometimes it does not work e.g.- 2 times out-of 10. Now I think this is not the right solution. I am also writing a new library called ArduinoGFX since 2019. The content is intended to be updated from time to time, I will add more details if I found new display or library update. ![]() Open-Smart Tft Lcd Shield Hx8352B Projects Source Code Download Step 1Add Tip Ask Question Comment Download Step 1: Why Add a Display You can run various IoT projects prefectly without any display. But not all IoT project only feed data in single direction (IoT to server), some IoT also gather real time information from the server for displaying. Open-Smart Tft Lcd Shield Hx8352B Projects Source Code Download A CurrentMy previous instructables, ESP32 Photo Clock is am example, it download a current minute photo from the Internet, decode the JPEG photo and display it. There are various real time information in your server or Internet, such as all rooms temperature in your home, server CPU usage, weather forecast, news, stock price, your downloading file is done, your Youtube channel views: Add Tip Ask Question Comment Download Step 2: Ok, Then Why Color Display Many Arduino projects use monochrome display, one of the reason is the limited resources of a MCU. Open-Smart Tft Lcd Shield Hx8352B Projects Source Code Full Screen PictureRGB color channel means 230 KB for each full screen picture. ![]() ESP32 have changed the game It have much faster processing power (16 MHz vs 240 MHz dual core), much more RAM (2 KB vs over 200 KB) and much more flash (32 KB vs 4 MB), so it is capable to utilize more color and higher resolution image for displaying. At the same time it is capable to do some RAM hungry process such as Animated GIF, JPEG or PNG file decoding, it is a very important feature for displaying information gathered from the internet. Add Tip Ask Question Comment Download Step 3: Serial Peripheral Interface Color display have many type of interfaces: Serial Peripheral Interface (SPI), 6-bit, 8-bit, 16-bit, 18-bit and 24-bit parallel interfaces and also NeoPixel SPI dominate the hobby electronics market, most likely because of fewer wire required to connect. Most display in my drawer only have SPI pins breaking out, so this instructables focus on SPI display and a few 8-bit display. Note: NeoPixel matrix is a very special type of color display. If you are interested in NeoPixel matrix display, here are some of my instructables using it: Add Tip Ask Question Comment Download Step 4: Hardware Software There are 2 parts to be considered while selecting a color display for ESP32. Hardware There are various color display for hobby electronics: LCD, IPS LCD, OLED with different resolutions and different driver chips. LCD can have higher image density but OLED have better viewable angle, IPS LCD can have both. OLED have more power efficient for each light up pixel but may have burn-in problems. Color OLED operate in 14 V, it means you need a dedicate step-up circuit, but it is not a problem if you simply use with a break-out board. LCD in most case can direct operate in 3.3 V, the same operating voltage as ESP32, so you can consider not use break out board to make a slimmer product. Software Software support on the other side also influence your selection. You can develop ESP32 program with Arduino IDE or direct use ESP-IDF. But since ESP-IDF did not have too much display library and not much display hardware supported, so I will concentrate on Arduino display libraries only. For the beginner, I think buying adafruit, or similar supportive vendor, hardware and using its Arduino library can have good seamless experience (though I have no budget to try it all). TFTeSPI library have better performance but configuration require make changes in the library folder. Ucglib and UTFT-ESP run a little bit slow but it support many hardware and it is a popular library, you can find many Arduino projects using it. LovyanGFX library start appear at 2019, it support many dev device such as M5Stack, M5StickC, TTGO T-Watch, ODROID-GO, ESP-WROVER-KIT, WioTerminal and more.
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