Engineering bay

Electronics Calculators

Results update as you type. Values are estimates — always leave a safety margin.

Supply V

LED forward V

Current mA

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Fill two, leave one empty.

Volts

Amps

Ohms

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Capacity mAh

Avg draw mA

Usable %

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All-up weight g

Thrust per motor g

Motors

Battery mAh

Avg current A

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Cells (S)

mAh

C rating

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Raspberry Pi 5 (busy) 1300 mA

Raspberry Pi 4 (busy) 900 mA

Pi Zero 2 W 300 mA

Camera Module 3 250 mA

SG90 servo (moving) 400 mA

WS2812B LED (full white) 60 mA

USB SSD 500 mA

Sensor (I2C) 5 mA

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Questions

What thrust-to-weight ratio do I need?

About 2:1 is the minimum for stable flight, 3–5:1 for sporty flying and 7:1 or more for racing and freestyle.