Documentation kobuki, mqtt, opencv

docs/code/kobuki-driver.md

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+# Kobuki driver 
+
+## How do i communicate with the kobuki
+You can communicate with the kobuki by usb serial or the big serial port on the front. We chose the usb port paired with a raspberry Pi.
+
+The Kobuki sends a message every 200ms with a baudrate of 115200. It sends all the sensordata and the message always starts with the same 2 bytes 0xAA and 0x55.
+
+## Kobuki payloads
+To communicate with the kobuki we need to send payloads to the kobuki. These are structured the same as the payloads that the kobuki sends.
+
+```cpp
+  unsigned char KobukiPayload[11] = {
+      0xaa,               // Start byte 1
+      0x55,               // Start byte 2
+      0x08,               // Payload length (the first 2 bytes dont count)
+      0x01,               // payload type (0x01 = control command)
+      0x04,               // Control byte or additional identifier
+      actual_speed % 256, // Lower byte of speed value (max actual_speed 1024)
+      actual_speed >> 8,  // Upper byte of speed value
+      0x00,               // Placeholder for radius
+      0x00,               // Placeholder for radius
+      0x00                // Placeholder for checksum (will be applied later)
+  };
+```
+You can also find the documentation about the payloads on the kobuki website