Gearotons M17 Servomotor

Name: Gearotons M17 Servomotor
Author: Gearotons

by Gearotonsversion 0.3.3i★ –iRuns on your computer

Registry nameio.github.Gearotons/servomotor-mcp

Install

Overview

Description from the maker (original English)

Drive Gearotons M17 open-source servomotors from plain English over RS-485; mock mode, no hardware.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 20/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: GEAROTONS_MOTOR_BACKEND, GEAROTONS_SERIAL_PORT, GEAROTONS_DEFAULT_SPEED_DPS

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "servomotor": {
      "command": "uvx",
      "args": [
        "servomotor-mcp"
      ],
      "env": {
        "GEAROTONS_MOTOR_BACKEND": "your-value",
        "GEAROTONS_SERIAL_PORT": "your-value",
        "GEAROTONS_DEFAULT_SPEED_DPS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add servomotor --env GEAROTONS_MOTOR_BACKEND=your-value --env GEAROTONS_SERIAL_PORT=your-value --env GEAROTONS_DEFAULT_SPEED_DPS=your-value -- uvx servomotor-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "servomotor": {
      "command": "uvx",
      "args": [
        "servomotor-mcp"
      ],
      "env": {
        "GEAROTONS_MOTOR_BACKEND": "your-value",
        "GEAROTONS_SERIAL_PORT": "your-value",
        "GEAROTONS_DEFAULT_SPEED_DPS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "servomotor": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "servomotor-mcp"
      ],
      "env": {
        "GEAROTONS_MOTOR_BACKEND": "your-value",
        "GEAROTONS_SERIAL_PORT": "your-value",
        "GEAROTONS_DEFAULT_SPEED_DPS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

GEAROTONS_MOTOR_BACKEND env
'auto' (default: real serial backend when the servomotor library is installed, otherwise the simulator, which says so in list_serial_ports), 'serial', or 'mock'. For real motors install servomotor-mc…
GEAROTONS_SERIAL_PORT env
Optional default port for the connect tool (e.g. /dev/cu.usbserial-210, /dev/ttyUSB0, COM3). Normally unnecessary: the model discovers ports with list_serial_ports.
GEAROTONS_DEFAULT_SPEED_DPS env
Default speed in degrees/second for the high-level move tools.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Gearotons, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18648 servers in this category
Published to the registry more recently than 49% of the other 18648 servers in this category
Basic checks equal to or better than 100% of the other 18648 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Gearotons M17 Servomotor safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.3) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, arr-mcp

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

by formulahendryEarly↓ 66/wk★ 440Updated 14 months ago

Runs on your computer

Install

Remote Desktop Commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

by desktop-commanderGrowing★ 211Updated 3 days ago

Runs in the cloud✓ desktopcommander.app

Install

arr-mcp

One server, 40 tools, the whole media stack: *arrs, Jellyfin, Plex, Seerr, Cleanuparr, downloaders

by bardesssVery newUpdated today

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

servomotor-mcp

Drive open-source [Gearotons M17](https://gearotons.com) servomotors from natural language.

An MCP server that exposes the M17 — a NEMA-17 integrated, closed-loop, RS-485 servomotor — to Claude Desktop, Claude Code, or any MCP client. Control real motors by just *asking*:

"Find my motors and rotate the one on the bench two full turns, slowly."

Nothing is hardcoded: the server discovers your serial ports, auto-detects the motors on the bus (the firmware's "Detect devices" command), and exposes the entire firmware command set — every command in the servomotor library's catalog becomes an MCP tool automatically (48 commands as of library 0.10.0), plus a few high-level tools for everyday moves. It ships with a mock backend, so you can try the whole thing with no hardware.

▶ 50-second video: the real motor and this session side by side — recorded 2026-09-09 on a bench M17; every line above is from the session log.

Step-by-step tutorial (boxed motor to "talk to it" in about twenty minutes): Talk to a servomotor from Claude Code on Hackster.

The first servomotor with an official MCP server. Open hardware, open firmware, open

software — and now an open, AI-native control interface.

Quickstart (no hardware, ~2 minutes)

# Run the server directly with uv (recommended). This runs the SIMULATOR —

for real motors see "Drive real motors" below:

uvx --from servomotor-mcp servomotor-mcp

or install it:

pip install servomotor-mcp servomotor-mcp

Then add it to Claude Desktop — copy the block from examples/claude_desktop_config.json into your claude_desktop_config.json, restart Claude Desktop, and ask: *"What serial ports do you see? Connect and find my motors."* See examples/demo_prompts.md for a scripted demo.

Drive real motors

Plug an M17 (or a daisy-chain of them) into a USB↔RS-485 adapter and install the [serial] extra — that's it, no configuration:

pip install 'servomotor-mcp[serial]'   # pulls in the Gearotons servomotor library

servomotor-mcp

With the servomotor library installed the server uses the real serial backend automatically. Without it, the server runs its simulator and says so: list_serial_ports and connect return a notice field, and a warning goes to stderr. With uv, use uvx --from 'servomotor-mcp[serial]' servomotor-mcp. In a session, the model then:

list_serial_ports — enumerates the machine's ports (macOS /dev/cu.*, Windows COM*, Linux /dev/ttyUSB*), flagging USB serial adapters;
connect — opens the port you (or it) picked, at 230400 baud;
auto-detects every motor on that bus (unique ID + alias) — no address maps to write;
drives them. Tell it in plain English which adapter to use if you have several.

Tools

High-level (discovery + everyday motion):

Tool	What it does
`list_serial_ports`	Enumerate serial ports with USB metadata (call first).
`connect` / `disconnect`	Open a port and auto-detect the motors on that bus.
`detect_devices`	Re-scan the bus (reboots the motors on it).
`list_motors`	Detected motors with live position/voltage/temperature/status.
`move_to` / `move_relative`	Absolute / relative moves in degrees; waits for completion.
`stop`	Emergency-stop one or all motors.
`get_motor_status`	One motor's snapshot, fatal errors decoded to plain English.
`run_sequence`	Choreographed steps ("draw a square"), incl. raw command steps.

Plus one tool per firmware command, generated from the library's command catalog: enable_mosfets, go_to_position, move_with_velocity, move_with_acceleration, multimove, homing, zero_position, get_position, get_temperature, set_device_alias, set_pid_constants, system_reset, vibrate, ping, … — anything the motor can do, the model can do. Motors are addressed by their alias number, their 16-hex-digit unique ID, or "all" (broadcast). Values are in friendly units (degrees, seconds, degrees/s, volts, °C); the server converts to firmware units.

How it works

natural language → Claude → MCP tool calls → this server → RS-485 → M17 motors

The server is a thin layer over the Gearotons servomotor Python library. The library is data-driven — motor_commands.json defines every firmware command — and the server turns that same catalog into MCP tools, so new library commands appear automatically. Tool calls are forwarded straight to the hardware — no software clamping; full multi-turn travel, any speed. The motor's own firmware protections (over-current / over-voltage / over-temperature) still apply. The same tools run against the mock backend (GEAROTONS_MOTOR_BACKEND=mock) for development and CI.

Environment variables (all optional):

GEAROTONS_MOTOR_BACKEND — auto (default: serial when the servomotor library is installed, else mock), serial, or mock.
GEAROTONS_SERIAL_PORT — default port for connect when the model doesn't pass one.
GEAROTONS_DEFAULT_SPEED_DPS — default speed for move_to/move_relative (180).

Develop / test

pip install -e '.[dev]'

GEAROTONS_MOTOR_BACKEND=mock pytest # catalog + mock-bus + server-tool tests

hardware_tests/ contains scripts that exercise the real serial path end to end (port sweep, full command suite, stdio MCP session) against a bench motor.

Status

✅ Full firmware command surface (48 commands), serial-port discovery, bus auto-detection — verified on a physical M17 (fw 0.15.3.0) over a real stdio MCP session and via uvx, on all four test adapters (motor found only where it truly is).
✅ Mock backend + 39 unit tests, no hardware needed.
✅ Cross-platform port handling (macOS / Windows / Linux) via pyserial enumeration.

License

MIT. Hardware, firmware, and software for the M17 are open-source — see github.com/tomrodinger/servomotor.

Gearotons M17 Servomotor

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

arr-mcp

README from the maker

servomotor-mcp

Quickstart (no hardware, ~2 minutes)

for real motors see "Drive real motors" below:

or install it:

Drive real motors

Tools

How it works

Develop / test

Status

License