Hw-044 Datasheet

Informative Text: HW-044 LED Display Module (MAX7219)

1. Overview

The HW-044 is a compact, pre-assembled module designed to drive common-cathode LED displays. Its core component is the MAX7219 integrated circuit from Maxim Integrated (now Analog Devices). The module allows microcontrollers (e.g., Arduino, ESP32, STM32) to control up to 64 individual LEDs (8 digits of 7-segments plus decimal points, or an 8x8 dot matrix) using only three I/O pins.

The 4-Second "Calibration" Quirk

Hidden in the TTP223 datasheet: The IC calibrates itself for the first 4 seconds after power-up. hw-044 datasheet

References

• Operating Temperature: The HW-044 has an operating temperature range of -40°C to 85°C.
• Storage Temperature: The component has a storage temperature range of -55°C to 125°C.
• Humidity: The HW-044 has a relative humidity range of 20% to 80%.

The HW-044 is a compact RS232-to-TTL serial port converter module built around the MAX3232 integrated circuit. This module is an essential tool for projects that require communication between a computer (RS232 levels) and a microcontroller (TTL levels), such as an Arduino or ESP32. Technical Specifications Informative Text: HW-044 LED Display Module (MAX7219) 1

Recommendation: Start with GAIN floating (9 dB) to avoid clipping. Increase gain only if your audio source is too quiet. Operating Temperature : The HW-044 has an operating

For Arduino Due (True I²S): | HW-044 Pin | Arduino Due Pin | |------------|------------------| | BCLK | Pin 3 (DAC1) | | LRC | Pin 2 (DAC0) | | DIN | Pin 9 (DAC2) | | Others | Same as above |