7219 LED Dot module / DIY set for Arduino

7219 is a serial input / an integrated output common cathode display drivers| 7 segment digital LED which connects the microprocessor with 8 bit digital display| can also be connected bar graph display or 64 independent LED. It includes an on-chip B BCD encoder| a scanning circuit| some words to drive| but also the static RAM a 8*8 to store each data. Only an external register is used to segment the current settings for each LED. A simple four wire serial interface can be connected with all general microprocessor. Each data can address does not need to rewrite all display update. 7219 also allows the user to select each data coding or non coding. Low power consumption shutdown mode the device contains a 150 ? A| analog and digital brightness control| a limited scan register allows the user to display 1-8 data| there is a let all LED luminescence detection mode. Only 3 IO port can drive 1 dot ! Dot display without blinking! Support cascading! This price is DIY price| not the price of finished product! Module parameters: 1 single module can drive a 8*8 common cathode lattice The 2 module working voltage: 5V The 3 module size: length 5 cm wide and 3.2 cm X X 1.5 cm high 4 with 4 fixing screw hole| aperture 3mm| can use the store M3 copper fixation The 5 module with input and output interface| support for multiple modules cascade Wiring instructions: The 1 module on the left is the input port| the output port. 2 control of a single module| only need to input port is connected to the CPU More than 3 modules cascade| first modules are connected with the input end of the CPU| the output end is connected with the second input terminals of the module| output module second is connected with the third input terminals of the module| and so on.