HiLetgo1.44" Colorful SPI TFT LCD Display ST7735 128X128 Replace 5110/3310 LCD

Though the circuit board has a voltage regulator, this regulator is only for power supply. The signals need to have resistors or the screen will go blank and show up only when you press reset on the Arduino or when downloading to the Arduino. I used 560 ohm resistors and the screen is now working fine.

The media could not be loaded.  Used a pair of these and an Adafruit Itsybitsy M4 board for a spooky eye project. They both work perfect. Don't forget to connect the LED pin to VCC!

Docked a star because mine was extremely delicate. The white bezel/holder if touched with the slightest of force, separates the screen layers. If turned upside down the entire thing can fall apart requiring reassembly of the screen. Very tedious to reassembly it cleanly without dust. I think the issue is that the double sided adhesive used is of subpar quality and is not very sticky. A very slight pressure on the white holder edges can remedy the issue, though be very careful not to press on the display itself or you might damage the screen.If you're having trouble getting this display to work, here are the useful details. If you're running it off an Arduino UNO or equivalent 3.3v or 5v microcontroller use the Adafruit ST7735 and ST7789 Library. I would not use the TFT_ILI9163C library, as when I tried it, it caused the screen to have corrupt 2-5 pixel band on one edge of the screen. Even though many places online will tell you to use that library, which is odd since this is a ST7735 screen and not a ILI9163C screen. Wiring is easy for an UNO, LED->3.3v, SCK->13, SDA->11, AO->8, Reset->Reset, CS->10, Ground->GND, VCC->3.3v. There is a voltage regulator on the back of the screen for the use of 5v power which is accompanied by a jumper pad. You can close the jumper pad to bypass the voltage regulator with a tiny blob of solder if you only have 3.3v microcontrollers. However if you supply 5v for VCC with the jumper closed you'll probably destroy it. Since this is actually a 3.3 volt screen, it will not work without resistors on a 5v device like an UNO. If you use a 3.3 volt microcontroller you don't need the resistors. If you're using a 5v microcontroller then four 560 Ohm, 680 Ohm or 1k Ohm resistors are needed for the data lines SCK, SDA, AO, and CS, to pull the voltage down from the Arduino pins. I used four 680 Ohm resistors. The reset line must be connected to the reset pin on an Arduino, not pin 9. If you try to use pin 9 on the UNO you will cause the screen contrast to overwhelm the display causing weird ghosting. This is because the Arduino is 5v not 3.3v The reset pin can be used on pin 9 if another resistor is supplied, however I don't see the point in adding another resistor when you can just use the reset pin. You can leave the resistors off if you use a multi channel 3v to 5v bidirectional level shifter or say a TXS0108E chip.Also if you're using the Adafruit ST7735 and ST7789 library, you'll want to use the initR function with INITR_144GREENTAB as the argument. That's because the ST77XX chip that's used on this board is a Sitronix ST7735R. Which is what the line tft.initR(INITR_144GREENTAB); tells the library to setup for.All in all, this is a fine display granted you get a working one. It's able to draw very fast compared to larger screens with the same family of chip, probably because it's only 128x128 pixels.

This was really weird. Using demo program it would only display anything when I depressed the reset button. Nothing otherwise. One time it came up and worked for a few minutes, no idea why. Was very cold in the room, perhaps a bad solder joint, I don't know. It will still display for a second or two while holding down the reset button. Will not buy this one again. I replaced it with an oled display with the SSD1306 chipset and used the adafruit library and have had great success. This LCD just wasted my time. Tech support was totally useless.

Perfect general use display.

As stated in another review there is a white line on the side, I was able to look over that, had my project running and let it sit overnight then turned it back on and it displayed my text for a few seconds then the screen turned white and now I can't get it to work anymore. At least they are cheap enough to be throw away.

Its not a 5110.

I received two of these displays and spent some time trying to find exact information on the product. After getting the information that I needed, I got both displays up and running with no problems. All pixels are there and the display is sufficiently bright.This would have been a five-star rating had there been an easily accessible data sheet on the seller's website. Unfortunately, there is precious little information there.One thing to mention: The protective covering over the display has a red line across the lower portion -- initially, I thought that this was a flaw in the display, but the line is just in the removable protective layer.