> ## Documentation Index
> Fetch the complete documentation index at: https://stem-docs.intellectualpoint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Welcome and kit check

> Day 1 kickoff - meet your robot, review the week ahead, and confirm your kit is complete.

## Welcome to Day 1

<Info>
  **Time**: 9:30 AM to 9:45 AM
</Info>

Today is all about getting your robot ready. By the end of Day 1, every sensor will show **PASS** and you will have a confirmed SSH connection to your robot.

### The week ahead

Here is what you will accomplish each day:

1. **Today (Monday)**: Setup, calibration, and sensor validation
2. **Tuesday**: Movement programs, text-to-speech, line following, and computer vision
3. **Wednesday**: Connect to a large language model and build a voice chatbot
4. **Thursday**: Feed the camera into a vision AI so the robot can see and understand
5. **Friday**: AI ethics, data privacy, final project, and continued learning resources

### Meet your robot

Your PiCar-X robot has several key components. The facilitator will walk through each one on camera:

* **Raspberry Pi Zero 2 W** — the tiny computer that runs everything
* **Robot HAT** — the board on top that controls motors, reads sensors, and has a speaker
* **Camera module** — a 5MP camera on a 2-axis pan/tilt mount
* **Ultrasonic sensor** — the two "eyes" at the front that measure distance
* **Grayscale sensor** — three infrared sensors underneath that read surface brightness
* **Speaker** — plays audio and text-to-speech through the Robot HAT
* **USB audio dongle** — adds microphone input for voice control
* **Two DC motors** — drive the rear wheels
* **Three servos** — one for steering, two for camera pan and tilt
* **Battery pack** — two 18650 lithium batteries (7.4V nominal)

### Kit check

<Check>
  Confirm your kit contains all of the following items before proceeding.
</Check>

<Steps>
  <Step title="Assembled PiCar-X robot">
    Pre-assembled and ready to go. Do not disassemble anything. The camera, ultrasonic sensor, and grayscale module should all be attached.
  </Step>

  <Step title="MicroSD card (in the robot)">
    A 32GB microSD card is inserted in the Raspberry Pi on the underside of the robot. You will remove it shortly to flash the operating system.
  </Step>

  <Step title="SD card reader">
    A USB adapter to connect the microSD card to your laptop for flashing.
  </Step>

  <Step title="USB audio dongle">
    A small USB sound card (Texas Instruments PCM2902) that provides microphone input and additional audio output. Keep this in your kit for Day 3.
  </Step>

  <Step title="USB micro cable for charging">
    A standard USB-A to micro-USB cable for charging the robot's batteries. Use a 5V phone charger — do **not** use a high-wattage USB-C laptop charger.
  </Step>

  <Step title="Dark electrical tape">
    A strip of black electrical tape for line-following and grayscale sensor calibration.
  </Step>
</Steps>

<Warning>
  **Battery safety**: The robot uses two 18650 lithium-ion batteries. Do not remove, puncture, or short-circuit them. Only charge through the Robot HAT's micro-USB port with a standard 5V charger.
</Warning>

### Credentials for today

You will use these throughout the camp. Write them down:

| Setting     | Value                 |
| ----------- | --------------------- |
| Hostname    | `picar`               |
| Username    | `car`                 |
| Password    | `car`                 |
| SSH command | `ssh car@picar.local` |

<Note>
  These are the same for every robot in camp. If you are on the same network as another student, you may need to use the IP address instead of `picar.local` to avoid conflicts.
</Note>