🔶 IIC I²C Serial Interface Board Module – LCD1602 Display Adapter for Arduino / PIC / Raspberry Pi
📦 Overview
This compact IIC/I²C serial interface board enables a classic LCD1602 (16×2) character display to be connected with just two wires (SDA/SCL),
significantly reducing wiring complexity compared to standard parallel LCD connections. Compatible with microcontrollers including Arduino, PIC, Raspberry
Pi, ARM and many other I²C hosts. Ideal for adding informative text displays to your embedded projects with minimal
✅ Key Benefits
- Converts standard LCD1602 parallel interface to I²C (SDA/SCL)
- Saves many GPIO pins on microcontrollers
- Simple 4-pin connection: VCC, GND, SDA, SCL
- Compatible with Arduino, Raspberry Pi, PIC and ARM boards
- Adjustable LCD contrast via onboard potentiometer
⚙️ Specifications
- Interface: IIC / I²C (SDA, SCL)
- Compatible Display: LCD1602 (HD44780-style)
- Logic Voltage: 5 V (typical)
- Number of Pins: 4 (VCC, GND, SDA, SCL):contentReference[oaicite:2]{index=2}
- Adjustable Contrast Potentiometer
- Condition: New:contentReference[oaicite:3]{index=3}
🔌 Wiring Guide (I²C)
LCD
----
VCC --> 5V
GND --> GND
SDA --> SDA pin (e.g. A4 on Arduino Uno, GPIO2 on ESP32/ESP8266)
SCL --> SCL pin (e.g. A5 on Arduino Uno, GPIO22 on ESP32)
The I²C address is often 0x27 or 0x3F — use an I²C scanner sketch to detect the correct address for your setup.
🧩 Arduino Example (I²C LCD)
Click to expand — Arduino I²C LCD code
#include
#include
LiquidCrystal_I2C lcd(0x27, 16, 2); // Change address if needed
void setup() {
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("Hello, World!");
lcd.setCursor(0, 1);
lcd.print("I2C LCD1602");
}
void loop() {
// Example: scroll text
lcd.scrollDisplayLeft();
delay(300);
}
🐍 Raspberry Pi I2C LCD Example
Click to expand — Python (smbus) I²C LCD code
import smbus
import time
# Import an HD44780/I2C LCD library for Pi (e.g., Adafruit_CharLCD or custom)
# Example uses smbus and an LCD library to write text:
from RPLCD.i2c import CharLCD
lcd = CharLCD('PCF8574', 0x27) # Change address if needed
lcd.write_string("Pi I2C LCD!")
time.sleep(2)
lcd.clear()
lcd.write_string("I2C 16x2 Display")
💡 Possible Uses
- Character LCD interface with minimal wiring
- Arduino status displays (sensor readings, menus)
- Raspberry Pi I²C LCD projects (GPIO saving)
- PIC / ARM microcontroller learning projects
- DIY embedded UI and diagnostics display
📦 Package Includes
- 1 × IIC I²C Serial Interface Board for LCD1602
IIC I²C Serial Interface Adapter for LCD1602 Display – Arduino Raspberry Pi I2C Module
🔍 Keywords
I2C LCD converter, IIC LCD1602 adapter, Arduino LCD interface, Raspberry Pi I2C display, microcontroller character display.
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