RGB LCD Shield Kit w/ 16x2 Character Display - Positive
Arduino shield kit with a 16x2 RGB positive character LCD and 5-button keypad, all controlled over I2C using only 2 Arduino pins. Frees remaining GPIO for other I2C devices on the shared bus.
Pinout
- 5V
Shield 5 V supply pin for detached use; source says power the 5V pin with 5V.
Type · powerVoltage · 5V - GND
Common ground for the shield when used detached from an Arduino.
Type · groundVoltage · 0V - SCL
I2C clock; guide says connect the SCL labelled pin to I2C clock. Also maps to A5 on Uno, D21 on Mega, and D3 on Leonardo.
Type · signal - SDA
I2C data; guide says connect SDA to I2C data. Also maps to A4 on Uno, D20 on Mega, and D2 on Leonardo.
Type · signal - LCD/keypad via MCP23017
The MCP23017 I2C port expander drives the 16x2 LCD and UP/DOWN/LEFT/RIGHT/SELECT/RESET buttons, so only the I2C/power pins are needed from the host.
Type · interface
Start wiring
SPI · I2C · 3.3 V · 3.3 – 5 V · Breakout
Adafruit describes product 398 as a 16x2 RGB backlight LCD using digital pins for LCD control and PWM pins for the backlight; the product…
Module pins: 5V, GND, SCL, SDA. Schematik maps them to your board in the app.
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