Project #2: Temperature Sensor. He plugged in the TMP36, opened the serial monitor. The room was a comfortable 22°C. The PDF said: "Good. Now hold the sensor between your fingers. Tell the truth."

But the file was corrupted. Or haunted.

Leo’s stomach tightened. He lived on the fourth floor. The window was locked. He looked anyway. Just rain.

For an hour, he wrote. Not C++. Not Python. He wrote a list. Things he was afraid of. Things he'd broken. Things he hadn't told anyone. He saved the file as repair.ino and "uploaded" it to his own mind.

The cover was a lie.

"Arduino is not about controlling the world. It is about letting the world control you, just a little, so you can learn to respond."

The rain stopped. The LED stopped its nervous heartbeat. And for the first time in months, Leo's hands were warm.