diff --git a/include/i2c.h b/include/i2c.h
index 4f32d0d..48c5de8 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -3,4 +3,8 @@
 
 #define LEFT_KEYBOARD_HALF_I2C_ADDRESS_7BIT 8
 
+// The 7-bit I2C addresses of the IS31FL3731 LED driver range from 0x74 to 0x77
+#define LEFT_LED_DRIVER_ADDRESS_7BIT  0b1110100
+#define RIGHT_LED_DRIVER_ADDRESS_7BIT 0b1110111
+
 #endif
diff --git a/right/include/board/pin_mux.c b/right/include/board/pin_mux.c
index bb9be51..bb00488 100644
--- a/right/include/board/pin_mux.c
+++ b/right/include/board/pin_mux.c
@@ -36,9 +36,9 @@ void BOARD_InitPins(void)
 {
     // Ungate ports.
     CLOCK_EnableClock(kCLOCK_PortA); // LEDs
-    CLOCK_EnableClock(kCLOCK_PortB); // SW3, I2C
+    CLOCK_EnableClock(kCLOCK_PortB); // SW3
     CLOCK_EnableClock(kCLOCK_PortC); // SW2
-    CLOCK_EnableClock(kCLOCK_PortD); // LEDs
+    CLOCK_EnableClock(kCLOCK_PortD); // LEDs, I2C
     CLOCK_EnableClock(kCLOCK_PortE); // UART1 for OpenSDA
 
     // Set up UART1 for OpenSDA.
@@ -78,9 +78,9 @@ void BOARD_InitPins(void)
     pinConfig.pullSelect = kPORT_PullUp;
     pinConfig.openDrainEnable = kPORT_OpenDrainEnable;
 
-    PORT_SetPinConfig(PORTB, 2, &pinConfig);
-    PORT_SetPinConfig(PORTB, 3, &pinConfig);
+    PORT_SetPinConfig(PORTD, 2, &pinConfig);
+    PORT_SetPinConfig(PORTD, 3, &pinConfig);
 
-    PORT_SetPinMux(PORTB, 2, kPORT_MuxAlt2);
-    PORT_SetPinMux(PORTB, 3, kPORT_MuxAlt2);
+    PORT_SetPinMux(PORTD, 2, kPORT_MuxAlt7);
+    PORT_SetPinMux(PORTD, 3, kPORT_MuxAlt7);
 }
diff --git a/right/main.c b/right/main.c
index d650b67..8ba0722 100644
--- a/right/main.c
+++ b/right/main.c
@@ -3,10 +3,63 @@
 #include "include/board/board.h"
 #include "include/board/pin_mux.h"
 #include "usb_composite_device.h"
+#include "i2c.h"
 #include "main.h"
+#include "fsl_common.h"
+#include "fsl_port.h"
 
-void main(void)
+void tx(uint8_t txBuffer[], uint8_t size)
 {
+    i2c_master_transfer_t masterXfer;
+    masterXfer.slaveAddress = LEFT_LED_DRIVER_ADDRESS_7BIT;
+    masterXfer.direction = kI2C_Write;
+    masterXfer.subaddress = 0;
+    masterXfer.subaddressSize = 0;
+    masterXfer.data = txBuffer;
+    masterXfer.dataSize = size;
+    masterXfer.flags = kI2C_TransferDefaultFlag;
+    I2C_MasterTransferBlocking(EXAMPLE_I2C_MASTER_BASEADDR, &masterXfer);
+    masterXfer.slaveAddress = RIGHT_LED_DRIVER_ADDRESS_7BIT;
+    I2C_MasterTransferBlocking(EXAMPLE_I2C_MASTER_BASEADDR, &masterXfer);
+}
+
+void write(uint8_t reg, uint8_t val)
+{
+    uint8_t txBuffer[] = {0, 0};
+    txBuffer[0] = reg;
+    txBuffer[1] = val;
+    tx(txBuffer, sizeof(txBuffer));
+}
+
+void InitLedDisplay()
+{
+    PORT_SetPinMux(PORTA, 2U, kPORT_MuxAsGpio);
+
+    gpio_pin_config_t led_config = {
+        .pinDirection = kGPIO_DigitalOutput,
+        .outputLogic = 0,
+    };
+
+    GPIO_PinInit(GPIOA, 2U, &led_config);
+    GPIO_SetPinsOutput(GPIOA,   0 << 2U);
+
+    write(0xfd, 0x0b); // point to page 9
+    write(0x0a, 0x01); // set shutdown mode to normal
+    write(0xfd, 0x00); // point to page 0
+
+    uint8_t i;
+    for (i=0x00; i<=0x11; i++) {
+        write(i, 0xff);
+    }
+    for (i=0x12; i<=0x23; i++) {
+        write(i, 0x00);
+    }
+    for (i=0x24; i<=0xb3; i++) {
+        write(i, 0xff);
+    }
+}
+
+void main() {
     BOARD_InitPins();
     BOARD_BootClockRUN();
     BOARD_InitDebugConsole();
@@ -18,6 +71,7 @@ void main(void)
     sourceClock = CLOCK_GetFreq(I2C_MASTER_CLK_SRC);
     I2C_MasterInit(EXAMPLE_I2C_MASTER_BASEADDR, &masterConfig, sourceClock);
 
+    InitLedDisplay();
     InitUsb();
 
     while (1);
diff --git a/right/usb_interface_mouse.c b/right/usb_interface_mouse.c
index ffc9c66..24a2c5d 100644
--- a/right/usb_interface_mouse.c
+++ b/right/usb_interface_mouse.c
@@ -42,7 +42,7 @@ static usb_mouse_report_t UsbMouseReport;
 static uint8_t scrollCounter = 0;
 static volatile usb_status_t UsbMouseAction(void)
 {
-    uint8_t i2cBuffer[I2C_DATA_LENGTH];
+/*    uint8_t i2cBuffer[I2C_DATA_LENGTH];
     i2c_master_transfer_t masterXfer;
     masterXfer.slaveAddress = LEFT_KEYBOARD_HALF_I2C_ADDRESS_7BIT;
     masterXfer.direction = kI2C_Read;
@@ -52,7 +52,7 @@ static volatile usb_status_t UsbMouseAction(void)
     masterXfer.dataSize = I2C_DATA_LENGTH;
     masterXfer.flags = kI2C_TransferDefaultFlag;
     I2C_MasterTransferBlocking(EXAMPLE_I2C_MASTER_BASEADDR, &masterXfer);
-
+*/
     UsbMouseReport.buttons = 0;
     UsbMouseReport.x = 0;//i2cBuffer[1] - i2cBuffer[0];
     UsbMouseReport.y = 0;