Begin by setting up your n8n workflow. This involves creating a new workflow in your n8n instance, where you will define nodes and logic to handle data transfer. Ensure that your n8n instance is properly set up and running.

Identify and prepare the data you want to move to S3. This could involve fetching data from a source within n8n or transforming existing data. Use nodes like HTTP Request, Set, or Function to prepare your data accordingly.

Since no third-party connectors can be used, you'll need to use the AWS SDK directly. Install the AWS SDK for JavaScript in your n8n instance. You can do this by accessing the server where n8n is running and installing the SDK via npm: ```bash
npm install aws-sdk
```

Configure your AWS credentials within the n8n environment. This typically involves setting environment variables for `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, and optionally `AWS_REGION`. Ensure these credentials have appropriate permissions to write to the target S3 bucket.

Add a Function node in your n8n workflow to handle the AWS S3 upload logic. Within the Function node, use the AWS SDK to create an S3 client and implement the upload operation. Here's a basic example:
```javascript
const AWS = require('aws-sdk');
const s3 = new AWS.S3();
const params = {
Bucket: '',
Key: '',
Body: ,
ContentType: ''
};
async function uploadToS3() {
try {
const result = await s3.upload(params).promise();
return result;
} catch (error) {
throw new Error(`Failed to upload to S3: ${error.message}`);
}
}
return uploadToS3();
```

Test the Function node to ensure it successfully uploads your data to the specified S3 bucket. Check for any errors in the function execution and verify that the data appears correctly in the S3 bucket.

Finally, automate the execution of your workflow as needed. You can set triggers within n8n to execute the workflow on a schedule, upon receiving data, or based on other events. This ensures that data is moved to S3 consistently and reliably.
By following these steps, you can effectively move data from n8n to Amazon S3 without relying on third-party connectors or integrations.