Chotu Robot

A Johnny-Five powered robot controlled through Claude's Model Context Protocol (MCP).

Prerequisites

• Node.js (v14 or newer)
• Arduino Board (connected via USB)
• Visual Studio C++ Desktop Tools (required for node-gyp)
  • Download link: https://visualstudio.microsoft.com/visual-cpp-build-tools/
  • During installation, make sure to select "Desktop development with C++"

Installation & Setup

1. Clone this repository or download the source code

2. Install dependencies:

   npm i
   

3. Compile TypeScript:

   npx tsc
   

4. Create build folder and move compiled JavaScript:

   mkdir build
   move src\*.js build\
   

5. Edit Claude Desktop config file at: C:\Users\<YourUsername>\AppData\Roaming\Claude\claude_desktop_config.json

   Add the following configuration:

   {
     "mcpServers": {
       "choturoboserver": {
         "command": "node",
         "args": ["D:\\ae-cp\\build\\choturobo.js"]
       }
     }
   }

   Note: Adjust the path if you installed the project in a different location.

6. Connect your Arduino board to your computer via USB

7. Start Claude and begin prompting

Hardware Setup

Connect the following components to your Arduino:

1. LED (Eyes):

   • Connect to pin 10
   • Anode (+) to pin 10 through a 220Ω resistor
   • Cathode (-) to GND

2. Buzzer:

   • Connect to pin 12
   • Positive (+) to pin 12
   • Negative (-) to GND

3. DC Motor:

   • Connect to pins 6 and 7 via a motor driver (L298N or similar)
   • PWM pin 6 for speed control
   • DIR pin 7 for direction control
   • Connect motor driver to external power source as needed

4. Servo Motor:

   • Connect to pin 5
   • Red wire to 5V
   • Black/Brown wire to GND
   • Yellow/Orange/White signal wire to pin 5

5. Fan (LED or actual small fan):

   • Connect to pin 4
   • Positive (+) to pin 4 (through transistor if using actual fan)
   • Negative (-) to GND

6. Relay:

   • Connect to pin 3
   • VCC to 5V
   • GND to GND
   • IN to pin 3

7. Temperature Sensor (e.g., TMP36 or similar):

   • Connect to analog pin A0
   • VCC to 5V
   • GND to GND
   • Signal to A0

8. Ultrasonic Sensor (e.g., HC-SR04):

   • Connect to analog pin A1
   • VCC to 5V
   • GND to GND
   • Signal/Echo to A1

Example Prompts

Basic Prompts

Use these prompts to interact with Chotu Robot's predefined actions:

• "Start Chotu" - Initializes Chotu robot
• "Stop Chotu" - Safely stops all operations
• "Move Chotu forward 10 steps" - Moves the robot forward
• "Turn Chotu left" - Turns the robot to the left
• "Turn Chotu right" - Turns the robot to the right
• "Set Chotu's speed to fast" - Changes movement speed

Component-Specific Prompts

LED (Eyes)

• "Make Chotu blink eyes for 3 seconds"
• "Can Chotu show me a light pattern with its eyes?"
• "Flash Chotu's eyes twice"

Buzzer

• "Make Chotu buzz for 2 seconds"
• "Can Chotu make an alarm sound?"
• "Play a short beep on Chotu"

Motor

• "Run Chotu's motor at half speed"
• "Can you make Chotu's wheels move forward for 5 seconds?"
• "Activate Chotu's motors at maximum speed"

Servo

• "Move Chotu's servo to 90 degrees"
• "Can you make Chotu look up by moving its servo?"
• "Position Chotu's arm at 45 degrees"

Fan

• "Turn Chotu's fan on"
• "Can you activate Chotu's cooling system?"
• "Turn off Chotu's fan"

Relay

• "Turn on Chotu's relay"
• "Can you activate Chotu's power circuit?"
• "Switch off Chotu's relay"

Temperature Sensor

• "What's the current temperature?"
• "Can Chotu tell me how hot it is?"
• "Check the room temperature with Chotu"

Ultrasonic Sensor

• "How far is the object in front of Chotu?"
• "Can Chotu detect any obstacles ahead?"
• "Measure the distance to the nearest object"

Combined Actions

• "Make Chotu do a light and sound show"
• "Can Chotu turn around while making noise?"
• "Have Chotu detect objects while blinking its eyes"
• "Make Chotu check the temperature while running its fan"

Port Configuration

By default, the Arduino is configured to connect to COM7. If your Arduino is connected to a different port:

1. Check your Arduino's port in the Arduino IDE or Device Manager
2. Update the port in src/choturobo.ts:

   board = new Board({ repl: false, debug: false, port: "YOUR_COM_PORT" });

Troubleshooting

• If you encounter node-gyp build errors, make sure Visual Studio C++ Desktop Tools are properly installed
• Verify that your Arduino board is properly connected and recognized by your computer
• Check the correct port is being used in the code for your Arduino connection
• If components aren't responding, double-check your wiring connections
• For motor or servo issues, ensure you have proper power supply connected

License

MIT