How much current does this draw?

Backlight power consumption (typical) : 15mA Supply voltage (typical value) : 3.3V, 5V Module operating current (Max) : 1500uA (Vdd=5V),1250uA (Vdd=3.3V)

Is this random access, i.e. send row/col position and character pairs? Or does it just scroll?

I am using it with a ESP32. To display I send row number,column position with lcd.setCursor(0,0); Rows are 0-3 and columns are 0-19. Does not scroll.

Has anyone used these with a 3.3 volt device like a Raspberry Pi, ARM-based Arduino, or ESP32? How did you wire the backlight?

i used the sketch from printables on 3 an 5 volts to turn on and off back light i used a momentary button

Hosyond 3pcs Iic I2c 2004 Lcd Module 20x04 Lcd Screen

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Description

🔧 Elevate your maker game with sleek, smart, and simple LCD brilliance!

PLUG PLAY COMPATIBILITY - Works effortlessly with Arduino, Raspberry Pi, STM32, and more—ideal for makers and pros alike.
VERSATILE IO T DIY READY - Display real-time data like clocks, temps, or messages in smart buildings and electronics projects.
STREAMLINED I 2 C CONNECTIVITY - Simplify wiring with just 4 wires (GND, VCC, SDA, SCL) for seamless Arduino & Raspberry Pi integration.
CUSTOMIZABLE BACKLIGHT CONTROL - Adjust contrast via built-in potentiometer for optimal visibility in any lighting.
CRYSTAL CLEAR 80 CHARACTER DISPLAY - Showcase detailed info with 4 lines x 20 characters—perfect for complex projects.

This 3-pack of 20x4 blue LCD modules features an I2C interface for minimal wiring and broad compatibility with popular development boards like Arduino and Raspberry Pi. Each display offers adjustable contrast via a built-in potentiometer and supports real-time data visualization, making it a top choice for IoT, DIY electronics, and smart building projects.

Specifications

ASIN	B0C1G9GBRZ
Best Sellers Rank	#5,343 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in LCD Character Modules
Brand	Hosyond
Built-In Media	1 x 10pin jumper wires, 3 x I2C 2004 LCD
CPU Manufacturer	ARM
CPU Model	ARMv7
Compatible Devices	Arduino, Raspberry Pi, Tinkerboard, Nano pi, Banana pi, stm32
Connectivity Technology	I2C
Customer Reviews	4.7 out of 5 stars 307 Reviews
Included Components	1 x 10pin jumper wires, 3 x I2C 2004 LCD
Item Weight	8 Ounces
Manufacturer	Hosyond
Mfr Part Number	B007
Operating System	Linux
Processor Brand	ARM
Processor Count	1
UPC	732214748156
Warranty Description	NO

Reviews

H**E

19.06.2025

T**S

19.04.2026

B**E

19.03.2025

S**F

26.02.2025

M**M

15.03.2025

J**K

24.02.2025

C**S

14.07.2025

R**G

28.04.2026

F**Z

9.11.2025

S**S

4.01.2024

H**A

9.12.2025

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₩51428

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Hosyond 3pcs IIC I2C 2004 LCD Module 20x04 LCD Screen Module Display for Arduino Raspberry Pi

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