Real-time sensor dashboard in Raspberry Pi - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a real-time sensor dashboard?

A real-time sensor dashboard is a visual display that shows live data from sensors as it is collected. It helps users quickly understand current conditions or changes.

beginner

Why is data refresh important in a real-time dashboard?

Data refresh ensures the dashboard shows the latest sensor readings. Without it, the dashboard might show old or outdated information.

beginner

Name two common visualization types used in sensor dashboards.

Line charts and gauges are common. Line charts show data trends over time, and gauges show current values like speed or temperature.

intermediate

How can Raspberry Pi be used in a real-time sensor dashboard?

Raspberry Pi can collect sensor data, process it, and send it to a dashboard app. It acts as a small computer connecting sensors to the display.

intermediate

What is one way to ensure accessibility in a real-time sensor dashboard?

Use clear labels, high contrast colors, and keyboard navigation so everyone can understand and use the dashboard easily.

What does a real-time sensor dashboard primarily display?

A Historical data only

B Live data from sensors

C Static images

D User profiles

A real-time sensor dashboard shows live data from sensors as it is collected.

Which visualization is best to show sensor data trends over time?

A Pie chart

B Table

C Line chart

D Gauge

Line charts display how sensor data changes over time, making trends easy to see.

What role does Raspberry Pi play in a sensor dashboard setup?

A Collects and sends sensor data

B Only displays data

C Replaces sensors

D Stores user passwords

Raspberry Pi collects sensor data and sends it to the dashboard for display.

Why is high contrast important in dashboard design?

A To make it colorful

B To slow down data refresh

C To reduce data accuracy

D To improve readability for all users

High contrast helps users with vision difficulties read the dashboard easily.

How often should data refresh in a real-time sensor dashboard?

A Every few seconds or minutes

B Once a day

C Never

D Only on user request

Frequent refresh keeps the dashboard showing the latest sensor data.

Explain how a Raspberry Pi can be used to build a real-time sensor dashboard.

Think about the Raspberry Pi as the bridge between sensors and the dashboard.

Describe three best practices for designing an accessible real-time sensor dashboard.

Consider how to make the dashboard easy to use for everyone.