NEW PRODUCT – 2.8″ 18-bit color TFT LCD with touchscreen breakout board
NEW PRODUCT – 2.8″ 18-bit color TFT LCD with touchscreen breakout board! Add some jazz & pizazz to your project with a color touchscreen LCD. This TFT display is big (2.8″ diagonal) bright (4 white-LED backlight) and colorful (up to 18-bit 262,000 different shades)! 240×320 pixels with individual pixel control, this has way more resolution than a black and white 128×64 display. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen.
This display has a controller built into it with RAM buffering, so that almost no work is done by the microcontroller. You’ll need 8 digital data lines and 4 or 5 digital control lines to read and write to the display (12 lines total). 4 pins are required for the touch screen (2 digital, 2 analog) but because of the way resistive touch screens work, we can share pins with the LCD so the entire setup can be run by 12 pins (10 digital, 2 analog).
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16-bit color normally means that three color channels are distributed over a 16-bit field, for example 5-bits for red, 6 for green, and 5 for blue (5+6+5=16). In this case, each channel (R, G, B) is 6-bits wide, amounting to 18-bits. These values are sent over a 16-bit bus. In the first cycle the red, green, and 4-bits of blue are sent. The remaining 2 blue bits are sent in the second cycle.
oops that is a typo. it is a 18-bit display 6-6-6. our library is 16-bit (for speed) but of course you can adapt it to 18bit easily. we will update the description
(16-bit 262,000 different shades)!
2^16 != 262,000
@peter — that’s not how color bit-depth works.
16-bit color normally means that three color channels are distributed over a 16-bit field, for example 5-bits for red, 6 for green, and 5 for blue (5+6+5=16). In this case, each channel (R, G, B) is 6-bits wide, amounting to 18-bits. These values are sent over a 16-bit bus. In the first cycle the red, green, and 4-bits of blue are sent. The remaining 2 blue bits are sent in the second cycle.
2^6 = 64. 64*64*64 = 262,144 == ~262,000 unique combinations of R+G+B.
oops that is a typo. it is a 18-bit display 6-6-6. our library is 16-bit (for speed) but of course you can adapt it to 18bit easily. we will update the description