Begin with Google Slides:
- Create a Google Slides presentation, one image per slide.
- File > Publish to the web.
- Click the Embed tab. Select the smallest slide size, and choose "start when player loads" and "restart after the last slide."
- Copy the embed code.
Move to Blogger:
- Create a new post.
- Write text if you want to.
- Click "HTML" and paste the code from your clipboard.