7x10 R click

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  • MIKROE-1993
  • MIKROE-1993
  7x10 R click  can be used for displaying letters on display with 7x5 font... more
Product information "7x10 R click"


7x10 R click can be used for displaying letters on display with 7x5 font resolution. It carries a matrix of 70 red LEDs driven by a pair of 8-bit serial-in, parallel-out shift registers, a Darlington Transistor array and a Johnson counter. 

7x10 R click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: AN, PWM, RST.

Essential features

7x5 is a standard resolution for displaying ASCII characters, so 7x10 click is essentially a dual-character display capable of showing letters in more readable typefaces compared to a 14-segment display. The dot matrix can also show scrolling text, thus fitting longer messages in small space.

The pair of 8-bit SIPO shift registers drive the display. The current amplification necessary for driving the LEDs is performed by a Darlington Transistor array while a Johnson counter performs the necessary LED multiplex.

SMD jumper

7x10 R click features an SMD jumper (zero-ohm resistor) that lets you switch between a 3.3V or a 5V power supply.


Type LED Matrix
Applications 7x5 dot matrix text display for user interfaces, for example on vending machines
On-board modules Matrix of 70 red LEDs driven by a pairs of 8-bit serial-in, parallel-out shift registers, a Darlington Transistor array and a Johnson counter
Key Features SPI interface (plus MR#, LATCH and R RST pins)
Key Benefits Displays letters in highly readable format. Scrolling text capability
Interface GPIO,SPI
Input Voltage 3.3V or 5V
Compatibility mikroBUS
Click board size L (57.15 x 25.4 mm)

Pinout diagram

This table shows how the pinout on 7x10 R click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
CD4017 clock pin RC 1 AN PWM 16 RR CD4017 reset
74HC595 reset MR 2 RST INT 15 NC  
Latch of 74HC595 CS 3 CS TX 14 NC  
SPI clock pin SCK 4 SCK RX 13 NC  
SPI master in slave out pin for the MCU MISO 5 MISO SCL 12 NC  
SPI master out slave in pin for the MCU MOSI 6 MOSI SDA 11 NC  
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground


Code examples for 7x10 R click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

This code snippet shows how to display scrolling text at medium speed.

01 void S7X10G_Task()
02 {
03     bool ind;
04     static bool called = false;
05     S7X10G_clearDisplay();
07     // scrolls given text
08     if ( !called )
09     {
10         S7X10G_drawText( " Mikro Elektronika" );
11         S7X10G_scrollEnable( S7X10G_SPEED_MED );
12         called = true;
13     }
14     do
15     {
16         ind = S7X10G_refreshDisplay();
17         S7X10G_tick();
18         Delay_ms( 10 );
19     } while( ind );
20     called = false;
21 }
23 void main()
24 {
25     systemInit();
26     while( 1 )
27     {
28         S7X10G_Task();
29     }
30 }


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