Adafruit LCD Shield with 16x2 Character Display
Arduino shield with a 16x2 character LCD and 5-button keypad controlled over I2C, using only 2 microcontroller pins. I2C bus remains free for additional peripherals.
Pinout
- +5VArduino power header +5V
Arduino shield 5V supply
Type · PowerVoltage · 5V - GNDArduino power header GND
Arduino shield ground
Type · GroundVoltage · 0V - SDAR3 SDA pin / Analog 4 compatibility trace
I2C data for MCP23017 LCD/keypad expander
Type · I2CVoltage · 5V I2C - SCLR3 SCL pin / Analog 5 compatibility trace
I2C clock for MCP23017 LCD/keypad expander
Type · I2CVoltage · 5V I2C - A4Arduino analog 4
Classic Arduino SDA compatibility connection, do not share as analogue input while shield is fitted
Type · AnalogVoltage · 5V I2C - A5Arduino analog 5
Classic Arduino SCL compatibility connection, do not share as analogue input while shield is fitted
Type · AnalogVoltage · 5V I2C
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| +5V | Arduino power header +5V | Power | Arduino shield 5V supply | 5V |
| GND | Arduino power header GND | Ground | Arduino shield ground | 0V |
| SDA | R3 SDA pin / Analog 4 compatibility trace | I2C | I2C data for MCP23017 LCD/keypad expander | 5V I2C |
| SCL | R3 SCL pin / Analog 5 compatibility trace | I2C | I2C clock for MCP23017 LCD/keypad expander | 5V I2C |
| A4 | Arduino analog 4 | Analog | Classic Arduino SDA compatibility connection, do not share as analogue input while shield is fitted | 5V I2C |
| A5 | Arduino analog 5 | Analog | Classic Arduino SCL compatibility connection, do not share as analogue input while shield is fitted | 5V I2C |
Pin details
6 connections- +5VArduino power header +5V
Arduino shield 5V supply
PowerVoltage · 5V - GNDArduino power header GND
Arduino shield ground
GroundVoltage · 0V - SDAR3 SDA pin / Analog 4 compatibility trace
I2C data for MCP23017 LCD/keypad expander
I2CVoltage · 5V I2C - SCLR3 SCL pin / Analog 5 compatibility trace
I2C clock for MCP23017 LCD/keypad expander
I2CVoltage · 5V I2C - A4Arduino analog 4
Classic Arduino SDA compatibility connection, do not share as analogue input while shield is fitted
AnalogVoltage · 5V I2C - A5Arduino analog 5
Classic Arduino SCL compatibility connection, do not share as analogue input while shield is fitted
AnalogVoltage · 5V I2C
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, SDA, SCL. Schematik maps them to your board in the app.
TFT & LCD
189 other options16×2 and 20×4 character LCDs (parallel, I2C backpack, Qwiic, Grove), SPI TFTs from 0.71 to 3.5 inches, and large DSI and HDMI capacitive-touch panels up to 13.3 inches.
0.71" Round LCD Display Module - 160x160, SPI, 65K Colors visual preview0.71" Round LCD Display Module - 160x160, SPI, 65K Colors
0.71inch Double Eye Round LCD Display Module, 160×160 Resolution, SPI Interface, 65K Colors visual preview0.71inch Double Eye Round LCD Display Module, 160×160 Resolution, SPI Interface, 65K Colors
0.96" IPS LCD Display Module - 160x80, SPI visual preview0.96" IPS LCD Display Module - 160x80, SPI
1.28inch Round Touch LCD Module, 240×240, IPS, SPI/I2C visual preview1.28inch Round Touch LCD Module, 240×240, IPS, SPI/I2C
1.3" SPI Colour Square LCD (240x240) Breakout visual preview1.3" SPI Colour Square LCD (240x240) Breakout
1.3inch LCD Module, 240×240, IPS, SPI visual preview1.3inch LCD Module, 240×240, IPS, SPI
1.44inch LCD HAT for Raspberry Pi, 128×128, SPI visual preview1.44inch LCD HAT for Raspberry Pi, 128×128, SPI
1.54inch LCD Module, 240×240, IPS, 65K RGB, SPI visual preview1.54inch LCD Module, 240×240, IPS, 65K RGB, SPI
1.54inch Touch LCD Module, 240×240, IPS, SPI/I2C visual preview1.54inch Touch LCD Module, 240×240, IPS, SPI/I2C
1.5inch LCD Module, 240×280, IPS, Rounded, SPI visual preview1.5inch LCD Module, 240×280, IPS, Rounded, SPI
1.8" TFT LCD 160x128 RGB visual preview1.8" TFT LCD 160x128 RGB
$2.95
1.83inch Touch LCD Module, 240×284, IPS, SPI/I2C visual preview1.83inch Touch LCD Module, 240×284, IPS, SPI/I2C
Related groups
4 groups
1.02" E-Ink Display Module - 128x80, Black/White, SPI visual previewE-paper
Waveshare makes up the large majority of parts here and often sells the same panel twice: once as a raw display needing a separate driver board, and once as a module or HAT+ with the SPI controller attached.
Displays · E-paper displays · 101 parts
"Shake" 8x8 LED Matrix visual previewLED displays
Adafruit HT16K33 backpacks, MAX7219 daisy-chains, NeoPixel and DotStar grids, HUB75 RGB matrix panels, charlieplexed arrays, bare clock displays, and two VFD character modules — almost 90 parts, none wired the same way.
Displays · LED displays · 89 parts
0.49inch OLED Display Module, 64×32, I2C visual previewOLED
About 30 parts: monochrome I2C modules from 0.49 to 1.3 inches, SPI/I2C grayscale and 65K-color RGB panels up to 1.5 inches, a transparent OLED, and ecosystem-specific units for Raspberry Pi, FireBeetle and M5Stack Grove.
Displays · OLED displays · 30 parts
1.75mm PLA (1kg) - Black visual preview3D printing
DFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.
Tools & prototyping · 3D printing · 53 parts