diff --git a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
index b55c7bcd2..2a9e8a972 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
@@ -8,6 +8,17 @@ Configuration Variables
 
     uint8_t receiver_mac[ESP_NOW_ETH_ALEN]  = {0xe4, 0xb0, 0x63, 0x17, 0x9e, 0x44};
 
+    typedef struct {
+        int         x_axis;             // Joystick x-position
+        int         y_axis;             // Joystick y-position
+        bool        nav_bttn;           // Joystick push button
+        bool        led;                // LED ON/OFF state
+        uint8_t     motor1_rpm_pwm;     // PWMs for 4 DC motors
+        uint8_t     motor2_rpm_pwm;
+        uint8_t     motor3_rpm_pwm;
+        uint8_t     motor4_rpm_pwm;
+    } __attribute__((packed)) sensors_data_t;
+
 Sending & Ecapsulating Data
 ----------------------------