Voltage divider — create a voltage with math
// WHAT YOU WILL LEARN
Vout = Vin × R2 ÷ (R1 + R2): make 2.5 V from 5 V with two resistors.
// LESSON NOTES
Need 2.5V but only have 5V? ⚡ Two resistors + one formula.
Vout = Vin × R2 / (R1 + R2)
5 × 10 / (10 + 10) = 2.5V ✅ — and the meter agrees.
Change R → change Vout. Save this for your next project 📌
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