7x10 R Click mikroBUS™ A Click accessory module for use with MikroElektronika mikroBUS™ microcontroller development boards. The 7x10 R click has a 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. The 7x10 click can be used to display two ASCII characters in standard 7x5 format and communicates with the target microcontroller through the mikroBUS™ SPI interface. The Click board requires a 3.3 or 5V power supply.