2.1 Prepare Tools

Check List · Step 1 of 12 · Get everything ready before you power on

🎯 Objective

To help new users get started smoothly, the board ships with FluidNC and a test config.yaml already installed on the ESP32-S3 module. If you're a beginner, please do NOT re-flash the firmware or change the YAML until you have finished this checklist.

📋 Checklist Overview

This checklist repeats the same item-by-item test we run on every board before it leaves the factory. It takes about 60 minutes, the steps are safe and simple, and they walk you through every I/O so you quickly get to know the board. Beginners, please don't skip it.

🧮 ESP32-S3 Module

The V5.77 is a carrier board — the brain is a plug-in ESP32-S3 module. Before you start, make sure the module is installed and fully seated in its socket, in the orientation shown by the silkscreen. Never insert or remove the module while the board is powered.

🔨 Tools Required

REQUIRED EQUIPMENT

Power Supply12 V or 24 V DC — powers the board. Never go over 24 V.

USB-C CableA data cable (not charge-only). Connects the board to your PC.

Windows PCWin 10 / 11. Runs the WebUI and the firmware flashing.

MultimeterSet it to auto-range, for checking voltages.

Jumper Caps ×10To bridge each input to GND during the input test.

Flat ScrewdriverSmall, for the 0–10 V trimmer and the screw terminals.

micro SD CardFormatted FAT32, to test the card slot.

AntennaIf your ESP32-S3 module has an IPEX antenna connector, plug the antenna in for Wi-Fi.

OPTIONAL EQUIPMENT

OLED Display0.96" I2C, only if your board has one.

OscilloscopeFor advanced signal checking.

485-to-USB ModuleFor the RS485 test (Advanced Tests).

💾 Test Firmware & Configuration

FluidNC Firmware: V4.0.x (Pre-installed)

Test Config File: config.yaml (Pre-installed)

Pre-installed at the factory — nothing to install before testing.

Reference config file: the factory test config.yaml is in the Documentation.

Step 1 of 12 2.2 Check Jumpers and Power On →