Little Bird Circuits breadboard diagrams you can open in Fritzing Playground
PRP 3 · Step 5 — Read the divider on A0 4 parts · 5 wires · 4 views Download .fz Embed view

The finished circuit: the junction between the LDR and the resistor goes to A0, so the board reads a voltage that follows the light.

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Shared from Little Bird Electronics. Opens in Fritzing — this image was created with Fritzing, and its part graphics are CC BY-SA 3.0.