MAX7219 LED Dot Matrix Display in Pakistan

MAX7219 8×8 LED Dot Matrix Display Module Kit for Arduino Hallroad Lahore

Sooner or later, Arduino enthusiasts always come across the dot matrix display. It is a two-dimensional patterned LED array that is used to represent characters, symbols, and images. Almost all modern outdoor LED displays use dot matrices.

And there is hardly any better option than the MAX7219 IC to control them. This is a simple and somewhat inexpensive way of controlling a single matrix. In addition they can be chained together to control two or more dot matrices for larger projects.

Overall they are a lot of fun and quite useful as well, so let’s get started

– Single module can drive an 8*8 dot matrix common cathode
– Module Operating voltage: 5V
– Module dimensions : length 3.2cm X 3.2cm wide X 1.3cm
– Holes with four screws, diameter 3mm
– Modules with input and output interfaces, support for cascading multiple modules

Package Included:

1 x MAX7219 Dot Led Matrix 8×8 SMD Module (Unassembled- Not Soldered)

MAX7219 LED Dot Matrix Screen Module For Arduino Raspberry Pi B/ B+ | Hallroad Lahore

The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers and an 8×8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7221 is compatible with SPI™, QSPI™, and MICROWIRE™, and has slew-rate-limited segment drivers to reduce EMI. A convenient 4-wire serial interface connects to all common µPs. Individual digits may be addressed and updated without rewriting the entire display. The MAX7219/MAX7221 also allows the user to select code decoding or no-decode for each digit. The devices include a 150µA low-power shutdown mode, analog, and digital brightness control, a scan-limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on. For applications requiring the 3V operation or segment blinking, refer to the MAX6951 data sheet.



  1. Support SPI interface B/B+ involved in Raspberry Pi
  2. – Driver chip: MAX 7219
  3. – Dot matrix type: 8×8 common negative red dot matrix

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