1602 LCD Keypad Shield with Blue Backlight for Arduino
1602 LCD Board Keypad Arduino Shield with Blue Backlight
The 1602 LCD Keypad Shield combines a 16-character by 2-line alphanumeric display with five push buttons, all on a single board that stacks directly onto an Arduino Uno. It uses the HD44780 controller, offering a simple parallel interface for text output and a resistor ladder keypad on a single analog pin. The blue backlight with white characters provides clear visibility in indoor environments.
Key Specifications
| Specification | Value |
|---|---|
| Display format | 16 characters × 2 lines |
| Backlight | Blue with white characters, pin D10 control |
| Interface | 4‑bit parallel (Arduino D4–D7) |
| Keypad | 5 keys via analog pin A0 (Select, Left, Up, Down, Right) |
| Contrast | On‑board potentiometer |
| Operating voltage | 5 V DC |
What You Can Build With This
- Digital clock with menu‑based time setting
- Temperature monitor using a DHT11 sensor, showing readings on the LCD
- Interactive menu system for home automation controllers
- Simple arcade‑style games like a number guessing game
Compatibility
Designed to stack on Arduino Uno, the shield also works with Arduino Mega 2560 because its data pins (D4–D7) are on the same digital I/O numbers. It requires 5 V logic levels, so it will not work directly with 3.3 V boards without level shifting. Common pairings include Arduino Uno R3 and Mega, and it can be used with most sketches written for HD44780‑based LCDs.
Wiring Notes
The shield plugs straight onto the Arduino headers; no external jumpers are needed. The backlight is controlled by digital pin 10 — set it HIGH to turn on. The keypad uses an analog voltage divider on A0; each button produces a distinct ADC value. Current draw is around 20 mA for the LCD plus the backlight, well within Arduino pin limits.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Mega?
Yes, the shield plugs directly onto the Mega. The LCD data pins (D4–D7) and the keypad analog pin (A0) are mapped to the same pin numbers, so standard sketches work without modification.
Can I adjust the contrast?
There is a small potentiometer on the board. Turn it with a screwdriver to set the character contrast to a readable level for your viewing angle.
Does the shield include both the LCD and the buttons?
Yes, the shield integrates a 16×2 blue‑backlit LCD and a 5‑button keypad on one PCB. No extra parts are needed.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items