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you can either connect your 5V pin or 3
On-board LED for the power indicator
100 nA at 18 V and 25°C
you first need to power it by 5V supply to its Vcc pin and connect GND pin
It has input voltage range of 3
MAX7219 LED Display Module 4-in-1 Dot Matrix STM8 Microcontroller you can either connect yourDisplay modules are widely used throughout the industry to show data or provide indications and warnings to the user. They make the interface user friendly even for non technical users, allowing easy control without needing an expert. A common challenge with LED displays is the high number of interfacing connections required, which can limit available pins for other modules. This MAX7219 Dot Matrix Module solves that problem by using the MAX7219 LED
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