MAX7219 is an integrated serial input / output common-cathode display driver, which connects your microprocessor to a 7-segment digital LED display with 8 digits. Only three IO ports are used to drive the eight digit display. MAX7219 supports flicker free displays as well as cascading displays.
Features : + 100% Brand new and high quality + MAX7219 digital display control module + Compatible with 5V and 3.3V microcontrollers. + You you can use it for Arduino, ESP32, ESP8266, STM32, Raspberry Pi
Note: VCC and GND should not be connected reversed, so as not to burn the chip
Specifications: Material: PCB + Electronic Components Power: 5V Size: 82 x 15 x 12mm Shell Color: Blue & black Net Weight:13g