4-Digit LED Display Module I2C 0.36″ Cathode for Arduino by JESSINIE

Description

Product Overview

The JESSINIE 4‑digit LED display module is engineered for precision, durability, and ease of integration. Measuring just 0.36 inches per digit, the common‑cathode configuration delivers high‑intensity illumination with a segment drive current of at least 25 mA and a bit drive current of 150 mA, guaranteeing legible numbers even under direct sunlight. The module incorporates the TM1650 driver chip, which handles multiplexing, brightness control, and optional keyboard scanning, reducing the load on the host microcontroller. Housed in a compact 12‑pin PH2.0‑4P socket, the unit includes mounting holes spaced at 3 mm, allowing secure attachment to PCBs or prototyping boards. Constructed from a robust polymer housing with a clear acrylic front panel, the display resists moisture, dust, and temperature fluctuations, making it suitable for both indoor and outdoor applications. The module operates at a standard 5 V supply and communicates via a simple I²C (or I2C) bus using only four wires (VCC, GND, SDA, SCL), streamlining wiring and minimizing the risk of connection errors.

Usage

Designed with makers, hobbyists, and professional engineers in mind, this display integrates seamlessly into a wide range of projects. Its compact footprint makes it ideal for handheld devices, portable meters, and compact instrumentation panels where space is at a premium. The high brightness and wide viewing angle enable clear readouts on outdoor signage, weather stations, and agricultural monitoring equipment that must perform reliably in bright daylight. The I²C interface allows multiple displays to be daisy‑chained on the same bus, supporting complex multi‑digit configurations without additional pins. Typical use cases include digital clocks, countdown timers, voltage meters, temperature displays, and user‑interface panels for custom controllers. The optional keyboard scanning feature can be leveraged to create button‑less input methods, such as rotary encoders or touch‑sensitive overlays, expanding the module’s versatility in interactive installations.

Why Choose Us

JESSINIE’s commitment to quality is reflected in every component of this LED display module. Each unit undergoes rigorous testing for brightness uniformity, electrical stability, and environmental resistance, ensuring that the product meets or exceeds industry standards for optoelectronic displays. The use of a proven TM1650 driver chip guarantees reliable multiplexing and reduces firmware development time, allowing developers to focus on application logic rather than low‑level timing constraints. Our PH2.0‑4P connector system provides a secure, polarized connection that prevents reverse polarity damage, a common failure point in hobbyist projects. In addition, JESSINIE offers responsive technical support and detailed documentation, including wiring diagrams, example Arduino sketches, and troubleshooting guides, to help customers get up and running quickly. With a competitive price point of $9.99 and a track record of positive customer reviews, this module delivers exceptional value without compromising performance.

Key Features

• Ultra‑bright 0.36″ digits provide clear visibility in direct sunlight and low‑light environments.
• Simple I2C connection uses only four wires, reducing wiring complexity and saving board space.
• Adjustable brightness with eight levels lets you fine‑tune display intensity for any lighting condition.
• Durable PH2.0‑4P socket and 3 mm mounting holes ensure secure installation and long‑term reliability.
• Responsive JESSINIE technical support and comprehensive documentation for hassle‑free integration.

FAQ

What voltage does the module require?

The display operates at a standard 5 V DC supply, which is compatible with most Arduino boards and common microcontroller platforms.

Can I connect multiple modules on the same I2C bus?

Yes. Each module can be assigned a unique I2C address, allowing you to daisy‑chain several displays on the same two‑wire bus without additional pins.

Is the brightness adjustable in software?

Brightness can be set via software commands to the TM1650 driver, offering eight discrete levels ranging from low to maximum intensity.

Does the module support keyboard scanning?

The TM1650 chip includes an optional keyboard scanning interface. This feature can be enabled through configuration registers, allowing you to connect up to eight keys directly to the module.

What is the warranty period?

JESSINIE provides a one‑year limited warranty covering manufacturing defects, backed by responsive customer service for troubleshooting and replacement.