Circuiteer workbench

More making. Fewer chores.

Identify parts, check a supply, skip the arithmetic. Keep your hands on the project.

BUILD · The flagship

Circuit → Perfboard

Your circuit works. Get a checked perfboard layout and a clear soldering guide, then get back to building.

Analyze a circuit

Verified account · Uses credits

IDENTIFY

Look it up. Get on with it.
Free

Pinout Lookup

Find the right pins, with the right orientation.

Part → pins

CHECK

Free · No account or credits needed
Free

Power Check

Add your loads. Check your supply.

Loads → headroom
Free

Wire Check

Check the wire you already have.

Can I use this wire?

CALCULATE

Free · No account or credits needed
Free

Series / Parallel Resistors

Combine resistors and find equivalent resistance.

Series ↔ Parallel
Free

Ohm’s Law

Voltage, current, resistance and power.

V = I × R
Free

Resistor Color Code

Read bands. Find the right resistance.

4 / 5 bands
Free

LED Resistor

Choose a resistor for a single LED.

mA → Ω
Free

Wire Gauge / Voltage Drop

Size a DC wire for a voltage-drop target.

AWG / mm²
Free

Voltage Divider

Check a divider or find an E24 pair.

Vin → Vout
Free

Battery Runtime

Estimate useful time from stored energy.

Wh → hours
Free

PCB Trace Width

Estimate copper width for a current.

A → mm