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IN PROGRESS2026-08-05

Emma Mk1 Dual Resonant Solid State Tesla Coil

A DRSSTC driven by an STM32 and controlled via a wireless interface.

Emma Mk1 Dual Resonant Solid State Tesla Coil hardware

In honor of my beautiful daughter Emma.

Forever my little lab partner.

Love dad ❤️

Overview

The Emma Mk1 is a Dual Resonant Solid State Tesla Coil (DRSSTC) driven by an STM32G474RE microcontroller, which is managed via UART from a Raspberry Pi running a Flask web portal.

Emma Mk1 DRSSTC High-Level Overview
Emma Mk1 DRSSTC High-Level Overview

Do not attempt to build, modify, or operate this project unless you are experienced with high‑voltage systems and understand the associated risks.

This project involves circuits that can generate lethal voltages and currents. Improper design, construction, testing, or use can result in property damage, severe injury, and/or death.

  • You assume all risk for any use, reproduction, or modification of this work.
  • The author disclaims all liability for any injuries, deaths, losses, or damages arising from the use or misuse of this project, to the fullest extent permitted by law.
  • This is not a finished or certified product. Expect bugs, incomplete features, and potential design errors. Use only as a reference or starting point for your own design.

By using this project, you acknowledge that:

  • You are qualified to work with high‑voltage equipment, or you will not proceed.
  • You accept full responsibility for your safety and compliance with all applicable laws, codes, and standards.
  • You understand that reproducing or adapting any part of this work is entirely at your own risk.

If you are unsure about any aspect of high‑voltage safety, do not use this project.

Live Documentation

The live documentation for the Emma Mk1 DRSSTC can be found here.

Repositories

Collage of the Emma Mk1 DRSSTC firing purple streamer arcs from its toroid, with a close-up of the illuminated EMMA MK 1 enclosure