|link| | Jhd2x16i2c Proteus Free

Guide: Using JHD2x16 I2C LCD with Proteus (Free) Overview This guide shows how to simulate a JHD2x16 (standard 16x2 character LCD) controlled via I2C in Proteus using free tools and libraries, including wiring, required components, code example (Arduino), and troubleshooting. Requirements (free)

Proteus (trial or student edition that supports simulation) Arduino IDE (free) I2C LCD backpack (PCF8574) library for Arduino (Wire + LiquidCrystal_I2C) Proteus library files: Arduino and generic 16x2 LCD; PCF8574 I2C I/O expander model (community/third‑party)

Components in Proteus

Arduino Uno R3 16x2 Character LCD module (JHD162A or generic HD44780) PCF8574 or PCF8574A I2C I/O expander (if not built-in, use a compatible SPICE model) Pull‑up resistors for SDA, SCL (4.7k) Power supply (5V), Ground Virtual terminal (optional for debug) jhd2x16i2c proteus free

Steps

Add parts in Proteus

Place Arduino Uno, 16x2 LCD, and PCF8574 model. If Proteus lacks PCF8574, import a third‑party model or use an Arduino sketch that bit‑bangs I2C to a parallel LCD (less ideal). Guide: Using JHD2x16 I2C LCD with Proteus (Free)

Wire connections

Connect Arduino 5V and GND to all modules. SDA -> A4 on Uno; SCL -> A5 on Uno. SDA and SCL lines: add two 4.7k pull‑ups to 5V. Connect PCF8574 P0–P7 to LCD pins (RS, RW, EN, D4–D7) per the backpack wiring:

Typical mapping: P0 -> D4, P1 -> D5, P2 -> D6, P3 -> D7, P4 -> RS, P5 -> RW (or tied low), P6 -> EN, P7 -> backlight control. Wire connections Connect Arduino 5V and GND to all modules

Ensure RW on LCD is tied to GND if controlled only by PCF8574.

Set PCF8574 I2C address