use case

A WiFi smart light switch, designed by AI

Mains-powered designs are where most hobby projects stall: isolation, creepage, and a compact AC/DC supply are unforgiving. Describe the switch you want and Ohmni handles the hard parts — an isolated SELV supply, a relay sized for the load, and a layout that respects the rules.

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A compiled board from the studio. Drag to look around.

What ends up on the board

85–265 VAC input with protection
Isolated 5 V SELV supply
ESP32 module for WiFi control
Relay switching the load
Status LED and programming header

How Ohmni designs it

The circuit is generated from your description, keeping the mains and low-voltage sections properly separated.
Supply rails are simulated and the layout is checked against manufacturing rules before you see it.
You download gerbers, a BOM, and a 3D preview, ready for your fab.

Design this board now

The prompt below goes straight into the studio. Edit it there, or use it as-is.

Mains-powered smart light switch: 85–265VAC in, isolated 5V SELV, ESP32, latching or non-latching relay switching the load, programming header, status LED. Include AC current sense if available.

Free to use