Mokxi

Online electronics simulator for Arduino, ESP32, Pico and STM32

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Web appEducationDeveloper toolsOther4 viewslaunched Nov 10, 2026

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Dane DolphMaker

How can Mokxi AI better assist you in building and checking your circuits?

About Mokxi

Mokxi is a free online electronics simulator that runs Arduino Uno, ESP32, Pico, STM32 and other boards in real time in your browser. Users wire their circuit on a virtual breadboard, write C++ code, and run the simulation with a serial monitor, plotter and scope. It supports importing and exporting projects and integrates an AI helper to build and check circuits step by step.

The platform includes over 500 parts and 44 boards, making it suitable for students, teachers, and hobbyists. It offers built-in lessons, daily challenges, and allows users to export sketches for real hardware or PCB manufacturing. Mokxi AI reviews your circuit and code for common errors before buying parts, helping avoid hardware mistakes.

How it was built with Claude

I’m a solo founder and a student, so Claude Code is basically my team. One Claude Code session runs as a coordinator: it plans each release, writes briefs and hands work to other Claude sessions that build features in their own git worktrees, then it reviews their work, merges and ships it through a deploy on my laptop. It also runs hourly check-ins while I’m at school, watching errors, signups and support tickets and answering the simple ones itself. Mokxi AI, the assistant inside the editor that explains build errors, checks wiring and builds whole circuits, runs on the Claude API. And Mokxi has its own MCP server, so you can ask Claude to build an Arduino or ESP32 project and get back a link that opens and runs it in the simulator. The 0.5.1 release I’m shipping today was planned, built and reviewed this way in about a day.

Gallery

Demo

Overview

Who is it for?

Students, teachers, and hobbyist electronics builders

Problem

First circuits often fail due to small wiring or code mistakes that are hard to spot before assembly

Solution

Simulate circuits and firmware online with real-time feedback and AI checks to find fixes before building hardware

What makes it unique

Runs Arduino, ESP32, Pico and STM32 boards in the browser with 500+ real parts, and Mokxi AI can build a whole working circuit from a sentence. It also works from Claude through Mokxi’s MCP server.