Do I need to buy hardware for this tutorial?

No. Everything runs in the browser: Circuitly simulates the board, the components and the code. Real hardware is optional if you want to rebuild the circuit afterwards.

Which components are used?

Arduino UNO board. They are already available in the simulator library.

How long does it take?

About 20 minutes, advanced level, in 4 guided steps.

What should I know before starting?

The previous tutorial in the series, “Log data as CSV”, is enough preparation. No software install is required.

Is the code provided and checked?

The simulator checks your wiring and your code automatically at every step, and shows the commented solution if you get stuck.

All tutorials

5 · Communication & data

Remember after power-off (EEPROM)

Advanced20 min

Goal

Keep a setting even after a restart.

Why it matters

RAM is wiped at power-off: EEPROM keeps user settings.

What you need

Arduino UNO board

Nothing to buy: every component below is simulated in the browser.

Steps

01Include <EEPROM.h>.
02Read the stored value at start-up.
03Write with EEPROM.update() (writes only when the value changes).
04Print the restored value.

This tutorial runs inside the Circuitly simulator: your wiring and your code are checked automatically at every step.

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Frequently asked questions

Do I need to buy hardware for this tutorial?: No. Everything runs in the browser: Circuitly simulates the board, the components and the code. Real hardware is optional if you want to rebuild the circuit afterwards.
Which components are used?: Arduino UNO board. They are already available in the simulator library.
How long does it take?: About 20 minutes, advanced level, in 4 guided steps.
What should I know before starting?: The previous tutorial in the series, “Log data as CSV”, is enough preparation. No software install is required.
Is the code provided and checked?: The simulator checks your wiring and your code automatically at every step, and shows the commented solution if you get stuck.

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