diff --git a/src/a811.cpp b/src/a811.cpp
index f66dd5c..b3a6e2f 100644
--- a/src/a811.cpp
+++ b/src/a811.cpp
@@ -115,7 +115,7 @@ POLLING_RATE A811::getUSBPollingRate()
     return POLLING_RATE(_conf12->c1.polling_rate);
 }
 
-ssize_t A811::setDPI(DPI_MODE mode, unsigned char color[3], int dpi)
+ssize_t A811::setDPI(DPI_MODE mode, unsigned char color[3], int dpi, int active)
 {
 
     if ((uint8_t)mode < (uint8_t)DPI_MODE::DPI_1 ||
@@ -129,21 +129,27 @@ ssize_t A811::setDPI(DPI_MODE mode, unsigned char color[3], int dpi)
         logError("ERROR: Invalid dpi.", __FILE__, __LINE__, __func__);
         return ssize_t(2);
     }
+    if (active > 5 || active < 1)
+    {
+        logError("ERROR: Invalid active dpi modes.", __FILE__, __LINE__, __func__);
+        return ssize_t(2);
+    }
     // Calculate the DPI value according to the formula
-    int dpi_value = (dpi - 50) / 50;
+    uint16_t dpi_value = (dpi - 50) / 50;
 
     // Split the value into two bytes (least significant byte first)
     uint8_t lsb = dpi_value & 0xFF;        // Extract the least significant byte
     uint8_t msb = (dpi_value >> 8) & 0xFF; // Extract the most significant byte
 
-    _conf12->c1.dpi_modes =
-        (uint8_t)(((uint8_t)mode & 0x0F) | ((0x1 & 0x0F) << 4));
 
-    _conf12->c1.hdpi[(uint8_t)mode - 1 * 2] = lsb;
-    _conf12->c1.hdpi[(uint8_t)mode - 1 * 2 + 1] = msb;
-    _conf12->c1.col_dpi[0] = color[(uint8_t)mode - 1 * 3];
-    _conf12->c1.col_dpi[1] = color[(uint8_t)mode - 1 * 3 + 1];
-    _conf12->c1.col_dpi[2] = color[(uint8_t)mode - 1 * 3 + 2];
+    _conf12->c1.dpi_modes = // number of active modes
+        (1 & 0x0f) << 4 | ((active & 0x0F));
+
+    _conf12->c1.hdpi[((uint8_t)mode - 1) * 2] = lsb;
+    _conf12->c1.hdpi[((uint8_t)mode - 1) * 2 + 1] = msb;
+    _conf12->c1.col_dpi[((uint8_t)mode - 1) * 3] = color[0];
+    _conf12->c1.col_dpi[((uint8_t)mode - 1) * 3 + 1] = color[1];
+    _conf12->c1.col_dpi[((uint8_t)mode - 1) * 3 + 2] = color[2];
 
     return ssize_t(0);
 }
@@ -156,7 +162,19 @@ int A811::getDPI(DPI_MODE mode)
         logError("ERROR: Invalid DPI_MODE.", __FILE__, __LINE__, __func__);
         return ssize_t(1);
     }
-    return 0;
+    // Assume lsb and msb are given or extracted from your configuration structure
+    uint8_t lsb = _conf12->c1.hdpi[((uint8_t)mode - 1) * 2];
+    uint8_t msb = _conf12->c1.hdpi[((uint8_t)mode - 1) * 2 + 1];
+
+    // Reconstruct the dpi_value
+    uint16_t dpi_value = msb << 8 | lsb & 0xFF;
+
+    std::cout << std::hex << dpi_value << " : " << (int)lsb << " : " << (int)msb << std::endl;
+
+    // Reverse the formula to get the original dpi
+    uint16_t dpi = (dpi_value * 50) + 50;
+
+    return dpi;
 }
 
 BATTERY_STAT A811::getBatteryStatus()
@@ -350,7 +368,7 @@ ssize_t A811::readConfigFromDevice(CONF_TYPE t_conf)
     case CONF_TYPE::LIGHT:
         _data[1] = 0x21;
         CHK(_connection->setReport(0x0305, _data, 8));
-        CHK(_connection->getReport(0x0308, (unsigned char*)&_conf12->c1, 520));
+        CHK(_connection->getReport(0x0308, (unsigned char *)&_conf12->c1, 520));
         break;
     case CONF_TYPE::KEY:
         _data[1] = 0x22;
diff --git a/src/a811.h b/src/a811.h
index 01beb4f..9606bdd 100644
--- a/src/a811.h
+++ b/src/a811.h
@@ -163,9 +163,30 @@ public:
     /// itse not a this class probelm i think just set the values,
     // itse more a dpi loop problem just need to set the values from frontend like
     // explained before
-    ssize_t setDPI(DPI_MODE, unsigned char[3], int);
+    //-- maybe active should be optional
+    /**
+     * @brief Set the DPI for a specific DPI MODE.
+     *
+     * This function allows you to set a specific DPI and an associated color
+     * for the mouse wheel for a Specific DPI mode.
+     *
+     * @param mode The mode for which to set the DPI and color values.
+     * @param color RGB
+     * @param dpi DPI value 50-26000
+     * @param active 1-5 how many DPI_MODE should be active. 
+     *
+     * @return ssize_t Returns the status of the operation, where 0 indicates
+     * success and a negative value indicates failure.
+     */
+    ssize_t setDPI(DPI_MODE, unsigned char[3], int, int);
 
-    // returns all active dpi configurations
+    /**
+     * @brief Get the current DPI value for a DPI_MODE.
+     *
+     * This function retrieves the current light mode of the device.
+     *
+     * @return int The current DPI for DPI_MODE.
+     */
     int getDPI(DPI_MODE);
 
     BATTERY_STAT getBatteryStatus();
diff --git a/src/conf.cpp b/src/conf.cpp
index a50b3d2..7b8349a 100644
--- a/src/conf.cpp
+++ b/src/conf.cpp
@@ -135,6 +135,7 @@ void Conf::testFunc()
     sleep(2);
 
     asd->setMultimediaButton(2, "media_volume_up");
+    asd->setMultimediaButton(6, "dpi-cycle");
 
     asd->writeConfigToDevice(CONF_TYPE::KEY);
     std::cout << asd->getButton(3).name << std::endl;
@@ -149,10 +150,23 @@ void Conf::testFunc()
                                0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
                                0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00};
     asd->setLightModeColors(LIGHT_MODE::BREATHING, cols2);
-    unsigned char cols3[3] = {0xff, 0xff, 0x00};
-    //asd->setDPI(DPI_MODE::DPI_1, cols3, 13000); --> setting this kills everything
-
+    unsigned char cols3[3] = {0xff, 0x00, 0x00};
+    asd->setDPI(DPI_MODE::DPI_1, cols3, 26000, 5);
+    cols3[0] = 0x0;
+    cols3[1] = 0xff;
+    asd->setDPI(DPI_MODE::DPI_2, cols3, 800, 5);
+    cols3[1] = 0x0;
+    cols3[2] = 0xff;
+    asd->setDPI(DPI_MODE::DPI_3, cols3, 1600, 5);
+    cols3[0] = 0xff;
+    cols3[2] = 0xff;
+    asd->setDPI(DPI_MODE::DPI_4, cols3, 3200, 5);
+    cols3[0] = 0xff;
+    cols3[1] = 0xff;
+    cols3[2] = 0xff;
+    asd->setDPI(DPI_MODE::DPI_5, cols3, 26000, 5);
     //asd->writeConfigToDevice(CONF_TYPE::KEY);
+    std::cout << "DPI at this: "<< asd->getDPI(DPI_MODE::DPI_1) << std::endl;
 
     std::cout << "Battery capacity:" << std::dec << asd->getBatteryCapacity() << std::endl;
     asd->writeConfigToDevice(CONF_TYPE::LIGHT);