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i2c / SPI character LCD backpack [ada-292]
Arduino에 LCD를 활용할 경우, 필요한 Pin의 개수를 줄여주는 역할을 합니다. / i2c and SPI input/output / 16x2 OLED displays, RGB 16x2 or 20x4 LCD는 호환되지 않습니다. / 상세설명 참조 하시기 바랍니다.
판매가격 : 13,200
적립금 :132
상품상태 :신상품
제품코드 :1265068
제조사 :adafruit
브랜드 :아다프루트 [브랜드바로가기]
출시일 :2018-02-07
구매수량 :
총 금액 :
MCU이용 꿀팁

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i2c / SPI character LCD backpack [ada-292]

Description

LCD backpacks reduce the number of pins needed to connect to an LCD. LCDs are a fun and easy way to have your microcontroller project talk back to you. Character LCDs are common, and easy to get, available in tons of colors and sizes. We've written tutorials on using character LCDs with an Arduino(or similar microcontroller) but find that the number of pins necessary to control the LCD can be restrictive, especially with ambitious projects. We wanted to make a 'backpack' (add-on circuit) that would reduce the number of pins without a lot of expense. 

By using simple i2c and SPI input/output expanders we have reduced the number of pins (only 2 pins are needed for i2c) while still making it easy to interface with the LCD. For Arduino users, we provide a easy-to-use library that is backwards compatible with projects using the '6 pin' wiring. The breakout comes with a 2-pin and 3-pin terminal block as shown (you can snap it together to make a 5-pin terminal and then solder it to the backpack for easy wiring) 

This backpack will work with any 'standard' character LCD, from 8x1 to 20x4 sizes! As long as they have a 16-pin single-line connection header at the top. We carry a few LCDs that work great. We suggest using our blue & white 20x4 or 16x2 LCDs. It does not work with the 16x2 OLED displays. You can try to connect our RGB 16x2 or 20x4 LCDs up but this backpack will not control the RGB backlight so you'll have to use the backpack only for the 14 digital IO pins (pins #1-14) and connect the backlight pins (#15-#18) directly to your microcontroller with 4 extra wires for color/PWM control as if they were just an RGB LED. 

For advanced users, this project can be used for general purpose I/O expansion, the MCP23008 has 8 i/o pins (7 are connected) with optional pull-ups, the SPI 74HC595 has 7 connected outputs. 

For a detailed tutorial on usage, including an Arduino library, wiring diagrams, and files, please visit the product page

 

TECHNICAL DETAILS

  • This board/chip uses I2C 7-bit address between 0x20-0x27, selectable with jumpers

 

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