Download and install the for your operating system (Windows/Mac/Linux).

Generally supports DC 7–36V . Note that reversing positive and negative inputs will damage the board.

Ensure limit switch wires are isolated from high-voltage stepper wires. Adjust the $5 parameter to invert limit pin status logic if using Normally Closed (NC) switches.

Supports standard 775 motors (12V–24V) up to heavy-duty, high-power 48V DC brushless spindles pulling up to 500W.

You likely wired the spindle to the "Spindle Enable" pin instead of the "PWM" pin. The manual's pinout diagram clearly separates these two functions.

Download and install the CH340 driver . Try a different USB port and use a short, shielded USB data cable. Issue 2: Stepper motors make a grinding noise or skip steps

: Supports 500W spindles and various laser modules (12V/5V with or without TTL/PWM). Offline Control

When using an offline controller, from the computer, as they typically cannot be used at the same time.

Double-check polarity (+ and -) before turning on the power supply. Spindle and Laser Connections

The heart of an Annoy Tools machine is typically a 3-axis control board based on the ATmega328P chip. Understanding the layout is the first step in successful operation.

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