The author of the book "Build a Weather Station with Elixir and Nerves" shares their experience using Grafana and TimescaleDB to store and visualize weather data collected from IoT sensors, leveraging Elixir's Nerves framework for building an end-to-end IoT solution. The project uses a Raspberry Pi Zero W along with I2C enabled sensors to capture environmental data, which is then published to a backend REST API and stored in TimescaleDB for analytics/visualization. Grafana is used to visualize the weather data, providing interactive visualizations and allowing users to plot time-series data stored in TimescaleDB hypertables. The project showcases the ease of use and benefits of using TimescaleDB as a time-series database, making it accessible for complete beginners to build full-stack IoT solutions.