LED DISPLAY APPLICATIONS

 
16 SEGMENT LED DISPLAYS

16 SEGMENT LED DISPLAYS

14 SEGMENT LED DISPLAYS

14 SEGMENT LED DISPLAYS

7 SEGMENT LED DISPLAYS

7 SEGMENT LED DISPLAYS

BAR GRAPH LED DISPLAYS

BARGRAPH LED DISPLAYS

 

      Our products are targeted to designers of various custom designed LED display panels using large amount of LEDs and indicators including different type and size indicators in same project. Some of applications are building machinery operator panel screens, mixed sign indicators panels, indoor - outdoor LED displays, medical instruments LED displays, exchange board LED displays, timetable schedule boards, transport information systems, production information LED displays digital clocks and etc. Comprehensive and simple process of developing of specific projects gives ability for very fast time to market and reduces cost of developing and production process. In PRODUCTS  page  are  enclosed    variety   of   free   schematics of seven, fourteen - sixteen segment, LED Bargraph Displays, dot matrix LED Displays, single LED and bicolour LED  Displays. Also in site is enclosed electronic  projects,  descriptions,  source files, documentation, and projects ..

 

 

LARGE SEVEN SEGMENT LED DISPLAYS 2.3"
LARGE SEVEN SEGMENT LED DISPLAYS 4"

LARGE SEVEN SEGMENT LED DISPLAYS10"
dot matrix panel design process

LED CONTROLLERS
 

     MCA2X16 are fully integrated and cheap LED controller designed for driving all kind of Common Anode LED displays and single LED's. These  products are very easy to use, simple and flexible in design, providing low count of cables , low consumption, low cost, light weight and small in dimensions. This LED controller is suitable for wide range of applications. LED controller provides all refresh cycles and logic operations, Light Intensity Control (Global Intensity) using programmable PWM control, Power Supply for logic, Power Anode Drivers and Serial Channel Buffers - LED drivers. LED controller drive two independent LINES. Refresh rate is 100 Hz and provide excellent, free flicker views of the designed LED display. Duty cycle of refresh is 1 to 10, providing maximal possible light intensity for driving dynamic LED displays. Simple and cheap external serial driver blocks - LED drivers, provides high current for driving LEDs and low count of cables and interconnections between PCB boards, low power consumption and heat losses of the custom designed LED displays. Internal Download - Upload Character generator takes ability of the user to dump directly decimal and hexadecimal values for 7 segment displays and ASCII characters and strings for 14 -16 segment indicators without one byte additional software. LED controllers provides additional useful information about level of Power supply voltage (VIN), logic supply voltage (VCC) and room Luminosity value for optimal PWM adjusting. LED controller accepts two types of data HEXADECIMAL and ASCII strings and characters. First type is decimal-hexadecimal bytes and blocks for transmitting commands and driving seven segment displays.  Second type of data is ASCII characters and strings for driving 14 -16 alphanumeric segment indicators. After the command is completed, LED controller sends to HOST message (selectable as LITERAL or HEX) for result of operation and indicate that is ready to accept new command. Simple and low count of command set is very easy to learn and use.  By this way can be designed variety of graphic symbols and pictures to the LED display. MCA2X16 is multifunctional LED Display Controller supports three types of interfaces using wedge type  interface boards depending of specific application. This interface boards dramatically expand connection flexibility and amount of driven LED's. As example when is used CB485 interface board can be connected to single serial channel  up to 32 Slave LED controllers MCA2X16 that can drive total amount of 81920 single LED's. Each type of interface board is recognizing automatically from LED controller and initialize peripherals requirements. MCA2X16 uses same command set lincluding one extra command for Slave select (applicable only with CB485 board).

 

MCA2X16 LED display controller   CB232 interface board  

  CB485 interface board
MCA2X16 LED controller   CB232 Interface board  

CB203 Interface board

 

CB485 Interface board


 

INTERFACE BOARDS   


 

CB232 INTERFACE BOARD

 

     CB232 interface board provides point to point connection with user systems, that maintain standard RS232C serial channel.  This interface board uses tree wire cable that can be long up to 30 meters between MCA2X16 LED controller and HOST system. Cable Connectors are standard DB9 female connectors. Used signals are Transmit, Receive and Ground. Other signal is not connected.

 

CB203 INTERFACE BOARD

    

     CB203 interface board provides point to point connection with user systems, that maintain standard TTL level serial channel.  This interface board is very suitable for direct connection with microcontrollers and microprocessor boards without additional buffering. Signals are internally buffered (to the LED controller's side) and can be used tree wire cable that can be long up to few meters. Connectors are Cvilux tree pin HU3 crimp cable connectors.

 

CB485 INTERFACE BOARD

 

     CB485 is full duplex multipoint four wire RS485 standard interface board. Via selecting Slave address  DIP switch user can connect up to 32 pieces MCA2X16 LED controllers to single serial channel to HOST system. Easy end cheap crimp cable connections  takes ability to build very large LED displays without efforts. CB485 supports optional jumpers for line termination. For more detailed information, documentation and source files about all types of interface board available for MCA2X16 LED controller, refer to page PRODUCTS.

 
KEY FUTURES OF MCA2X16 LED CONTROLLER
 
Type of Indicators both LINES each LINE
seven segment indicators   320 160
fourteen - sixteen segment indicators   160 80
dot matrix 5X8   64 32
single LEDs   2560 1280
o   Test communication between HOST and LED controller
o   One command for clear and test of all displays indicators
o   99 steps PWM for LED Intensity Control
o   Facility to send to display various signs and shapes
o   Internal character generator for 7, 14 and 16 segment indicators
o   Measuring room environment Luminosity
 
 
TECHNICAL DATA
 
Supply Voltage    min 8V – max 25V
Anode Current    3A for each Anode for both LINES
Power Consumption ( +5V )    40 mA max both full LINES
Luminosity measurement    10 bit
Duty Cycle    1 / 10
Refresh Rate    100 Hz
PWM depth 99 steps    0 – 99 %
Shift Register Clock    375 kHz each LINE
Number of Driven Lines    2
Number of LED Buffers    2 X 160 bytes
Number of LED drivers each LINE    16
Max number of LED drivers both LINES    32
Number of Commands    19
Dimensions inches    3.3 in. X 2.2in.
Dimensions millimetres    83.82 mm X 55.88 mm
Weight    30 grams
 
LED DISPLAY CATHODE DRIVERS

    Selecting of LED drivers buffer depends on the desired load current for selected indicators. This technique enables ability of connection of different types of indicators in each LINE to the same LED driver. Current for desired LED display can be easily provided depending value of Input Voltage (VIN) and Technical Data about Forward current for selected LED indicator using formula and examples in  extbuf3.8.pdf. Actually each  LINE is constructed from up to 16 serially connected 8 bit shift registers - LED drivers. Anodes of indicators are directly connected to appropriate pins to Anode connector. For more detailed information and downloads refer to PRODUCTS page.


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