diff --git a/docs/user.md b/docs/user.md
index 2752327..a00b137 100644
--- a/docs/user.md
+++ b/docs/user.md
@@ -5,7 +5,8 @@ This page contains user-built drones based on the Flix project. Publish your pro
 ---
 
 Author: [Неруш Михаил](https://t.me/NerushMV).<br>
-Description: custom frame made of 4 mm plywood, 8520 brushed motors, 75 mm propellers, MPU-6500. FlySky FS-i6X with ESP32-based adapter for ESP-NOW communication (using PPM output).
+Description: custom frame made of 4 mm plywood, 8520 brushed motors, 75 mm propellers, MPU-6500. FlySky FS-i6X with ESP32-based adapter for ESP-NOW communication (using PPM output).<br>
+Sources and materials: [link](https://drive.google.com/drive/folders/1uWiDcuorLrtVs_IIR7Y13omij-7Q1nx8).
 
 <img src="img/user/nerush/1.jpg" height=200> <img src="img/user/nerush/2.jpg" height=200>
 
diff --git a/flix/flix.ino b/flix/flix.ino
index 16b62aa..615664b 100644
--- a/flix/flix.ino
+++ b/flix/flix.ino
@@ -17,7 +17,7 @@ extern float motors[4];
 
 void setup() {
 	Serial.begin(115200);
-	print("Initializing flix\n");
+	print("Initializing Flix\n");
 	setupParameters();
 	setupPower();
 	setupLED();
diff --git a/flix/motors.ino b/flix/motors.ino
index 1540ac4..9654eec 100644
--- a/flix/motors.ino
+++ b/flix/motors.ino
@@ -17,7 +17,7 @@ int pwmMax = -1; // -1 means duty cycle mode
 const int MOTOR_REAR_LEFT = 0, MOTOR_REAR_RIGHT = 1, MOTOR_FRONT_RIGHT = 2, MOTOR_FRONT_LEFT = 3;
 
 void setupMotors() {
-	print("Setup Motors\n");
+	print("Setup motors\n");
 	// Configure pins
 	for (int i = 0; i < 4; i++) {
 		if (motorPins[i] < 0) continue; // skip unassigned motors
@@ -25,7 +25,6 @@ void setupMotors() {
 		pwmFrequency = ledcChangeFrequency(motorPins[i], pwmFrequency, pwmResolution); // when reconfiguring
 	}
 	sendMotors();
-	print("Motors initialized\n");
 }
 
 void sendMotors() {
diff --git a/tools/pyflix/README.md b/tools/pyflix/README.md
index 138878f..b5b61d8 100644
--- a/tools/pyflix/README.md
+++ b/tools/pyflix/README.md
@@ -222,6 +222,13 @@ The following scripts demonstrate how to use the library:
 * [`log.py`](../log.py) — download flight logs from the drone.
 * [`example.py`](../example.py) — a simple example, prints telemetry data and waits for events.
 
+> [!TIP]
+> Set `FLIX_DEVICE` environment variable to use these tools with ESP-NOW connection, for example:
+>
+> ```bash
+> FLIX_DEVICE=/dev/cu.usbserial-0001 tools/cli.py
+> ```
+
 ## Advanced usage
 
 ### MAVLink