Hobby Electronics

Planning calculators for hobby electronics — estimates from industry-style inputs.

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Component cost from project parts list.

Power supply sizing from Pi model and peripherals.

Resistor value from LED specs and supply voltage.

PCB fabrication cost from board size, layers, and quantity.

Sensor type and specs from measurement requirements.

Runtime from battery capacity and circuit current draw.

Iron specs from project type and components.

Enclosure dimensions from PCB and component layout.

Wire AWG from current capacity and voltage drop.

Bandwidth and sample rate from signal requirements.