MAX7219 controller LED Tube Display Module 7 segment 8 digital tube display module digit display module.
 
MAX7219 8 Digit Led Tube Display Control Module is a Serial 7-Segment Digital Display Module for Arduino 3.3V 5V Microcontroller. The MAX7219 has integrates a convenient four-wire serial interface that can be used to all micro-controller, microprocessors. Each on-chip data can be addressed in the update without rewriting all display, and also allows you to select each data encoding or no-coding.
It is an integrated serial input/output common-cathode display drivers, which connects the microprocessor and 8-bit 7-segment digital LED display, you can also connect a bar graph display or 64 separate LED. Includes an on-chip type B BCD encoders, multi-channel scanning loop, segment word driver, but also an 8×8 static RAM that stores each data. Only one external register is used to set the current of each LED segment.
A convenient four-wire serial interface can connect all common microprocessors. Each data can be addressed in the update without rewriting all displays. MAX7219 also allows the user to select each data encoding or no coding.
The entire device includes a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display 1-8 bit data, there is an all-LED light detection mode.
Features:
0.36-inch Common cathode
Only need three IO ports can drive 8-bit digital tube
The module compatible with 5V / 3.3V microcontroller (51 / AVR / STM3) and Raspberry Pi
Only need three IO ports can drive 8-bit digital tube
The module compatible with 5V / 3.3V microcontroller (51 / AVR / STM32…)
PCV board four corners of the fixed copper stud, which can effectively percent short circuit accidents happen
 
Resources:
1. Arduino MAX7219 7-Segment Display Tutorial
2. 8 Digit Counter with 7 Segment Display Module MAX7219
3. A library for the MAX7219 7 segment 8 digit display with decimals.