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And for retailer which you may hang on the box in your a physical store
OLED Driver IC: SSD1306
Operating voltage: DC6-12V (recommended 9V1A 12V1A)Current: 1A
Supporting the use of a direct plug and easy-to-use stepper motor used in the development board
Matrix LED Dsiplay 32x8 module, MAX7219 4-in-1 dot-matrix display High sensitivity And for retailer which youMAX7219 is an integrated serial input output common cathode display driver, it is connected to a microprocessor and an 8 digit 7 segment LED display. It includes an on chip B type BCD encoder, multi channel scanning loop, segment word driver, and an 8*8 static RAM for storing each data. Only one external register is used to set the segment current of each LED. Features: 10MHz Serial Interface Individual LED Segment Control Decode No Decode Digit
