diff --git a/left/src/slave_protocol_handler.c b/left/src/slave_protocol_handler.c
index c936185..9cc71de 100644
--- a/left/src/slave_protocol_handler.c
+++ b/left/src/slave_protocol_handler.c
@@ -7,6 +7,7 @@
 #include "slave_protocol.h"
 #include "main.h"
 #include "init_peripherals.h"
+#include "bool_array_converter.h"
 
 void SetError(uint8_t error);
 void SetGenericError(void);
@@ -33,7 +34,8 @@ void SlaveProtocolHandler(void)
     switch (commandId) {
         case SlaveCommand_GetKeyStates:
             SlaveTxSize = KEYBOARD_MATRIX_COLS_NUM*KEYBOARD_MATRIX_ROWS_NUM;
-            memcpy(SlaveTxBuffer, keyMatrix.keyStates, SlaveTxSize);
+            BoolBytesToBits(keyMatrix.keyStates, SlaveTxBuffer, SlaveTxSize);
+//            memcpy(SlaveTxBuffer, keyMatrix.keyStates, SlaveTxSize);
             break;
         case SlaveCommand_SetTestLed:
             SlaveTxSize = 0;
diff --git a/right/src/slave_drivers/slave_driver_uhk_module.c b/right/src/slave_drivers/slave_driver_uhk_module.c
index 140f149..7e6f30b 100644
--- a/right/src/slave_drivers/slave_driver_uhk_module.c
+++ b/right/src/slave_drivers/slave_driver_uhk_module.c
@@ -5,11 +5,13 @@
 #include "main.h"
 #include "peripherals/test_led.h"
 #include "test_states.h"
+#include "bool_array_converter.h"
 
 uhk_module_state_t UhkModuleStates[UHK_MODULE_MAX_COUNT];
 uhk_module_field_t currentUhkModuleField = UhkModuleField_SendKeystatesRequestCommand;
 uhk_module_state_t uhkModuleExternalStates[UHK_MODULE_MAX_COUNT];
 uint8_t txBuffer[2];
+uint8_t rxBuffer[LEFT_KEYBOARD_HALF_KEY_COUNT/8 + 1];
 
 void UhkModuleSlaveDriver_Init()
 {
@@ -32,10 +34,14 @@ void UhkModuleSlaveDriver_Update(uint8_t uhkModuleId)
             currentUhkModuleField = UhkModuleField_ReceiveKeystates;
             break;
         case UhkModuleField_ReceiveKeystates:
-            I2cAsyncRead(I2C_ADDRESS_LEFT_KEYBOARD_HALF, CurrentKeyStates[SLOT_ID_LEFT_KEYBOARD_HALF], LEFT_KEYBOARD_HALF_KEY_COUNT);
+//            I2cAsyncRead(I2C_ADDRESS_LEFT_KEYBOARD_HALF, CurrentKeyStates[SLOT_ID_LEFT_KEYBOARD_HALF], LEFT_KEYBOARD_HALF_KEY_COUNT);
+            I2cAsyncRead(I2C_ADDRESS_LEFT_KEYBOARD_HALF, rxBuffer, LEFT_KEYBOARD_HALF_KEY_COUNT/8+1);
             currentUhkModuleField = UhkModuleField_SendPwmBrightnessCommand;
             break;
         case UhkModuleField_SendPwmBrightnessCommand:
+//        memset(rxBuffer, 0, LEFT_KEYBOARD_HALF_KEY_COUNT/8 + 1);
+            BoolBitsToBytes(rxBuffer, CurrentKeyStates[SLOT_ID_LEFT_KEYBOARD_HALF], LEFT_KEYBOARD_HALF_KEY_COUNT);
+
             txBuffer[0] = SlaveCommand_SetLedPwmBrightness;
             txBuffer[1] = uhkModuleInternalState->ledPwmBrightness;
             I2cAsyncWrite(I2C_ADDRESS_LEFT_KEYBOARD_HALF, txBuffer, 2);
diff --git a/shared/bool_array_converter.c b/shared/bool_array_converter.c
new file mode 100644
index 0000000..27cd26f
--- /dev/null
+++ b/shared/bool_array_converter.c
@@ -0,0 +1,17 @@
+#include <string.h>
+#include "bool_array_converter.h"
+
+void BoolBytesToBits(uint8_t *srcBytes, uint8_t *dstBits, uint8_t byteCount)
+{
+    memset(dstBits, 0, byteCount/8 + 1);
+    for (uint8_t i=0; i<byteCount; i++) {
+        dstBits[i/8] |= (srcBytes[i] ? 1 : 0) << (i % 8);
+    }
+}
+
+void BoolBitsToBytes(uint8_t *srcBits, uint8_t *dstBytes, uint8_t byteCount)
+{
+    for (uint8_t i=0; i<byteCount; i++) {
+        dstBytes[i] = (srcBits[i/8] & (1 << (i % 8))) ? 1 : 0;
+    }
+}
diff --git a/shared/bool_array_converter.h b/shared/bool_array_converter.h
new file mode 100644
index 0000000..584254a
--- /dev/null
+++ b/shared/bool_array_converter.h
@@ -0,0 +1,13 @@
+#ifndef __BOOL_ARRAY_CONVERTER_H__
+#define __BOOL_ARRAY_CONVERTER_H__
+
+// Includes:
+
+    #include <stdint.h>
+
+// Functions:
+
+    void BoolBytesToBits(uint8_t *srcBytes, uint8_t *dstBits, uint8_t byteCount);
+    void BoolBitsToBytes(uint8_t *srcBits, uint8_t *dstBytes, uint8_t byteCount);
+
+#endif