Firmware Overview

Firmware Variants

Variant	Language	Target	Key Feature
MimiClaw	C	ESP32-C3	Minimal footprint (under 888KB)
ESP-Claw	C	ESP32-S3	Full-featured with PSRAM
PycoClaw	MicroPython	ESP32-S3	Easy customization
WireClaw	C + Rules	ESP32-S3	Automation rule engine

Quick Flash

The fastest way to get firmware on your board is the browser-based flasher — no toolchain needed.

Building from Source

If you want to build the firmware yourself:

# Clone the repository
git clone https://github.com/openclaw/espclaw.git
cd espclaw

# Set up ESP-IDF (v5.2+)
. $IDF_PATH/export.sh

# Configure for your board
idf.py set-target esp32s3

# Build
idf.py build

# Flash
idf.py -p /dev/ttyUSB0 flash monitor

Configuration

ESP-Claw uses three main configuration files:

• SOUL.md — Defines your AI agent’s personality and behavior
• USER.md — Stores user preferences and context
• MEMORY.md — Persistent memory across conversations

These are plain text files that you can edit directly.

Next Steps

• Building from Source
• Flashing Guide
• OTA Updates