Craftyhandy Ultimate SR6 — Metal Frame, Thermal Protection, Tool-Free Servo Swap & More

Servo DS3225 25KG Craftyhandy 45KG DS CLS3355 55KG

$290.00 USD

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Ultimate SR6

The most refined SR6 platform ever built.

The Craftyhandy Ultimate SR6 is a fully re-engineered multi-axis device that addresses every known limitation of the traditional SR6 platform. From thermal management to servo maintenance, from shipping safety to cable aesthetics — every detail has been redesigned with the user in mind.

🔥 Metal Frame & Active Thermal Protection

Heat deformation is the #1 cause of SR6 failure. We solved it with a two-part approach:

Metal servo mounting brackets replace 3D-printed frames at all servo contact points, distributing heat evenly instead of concentrating it.
Built-in NTC thermistor monitors temperature in real time. When the threshold is reached, servos pause automatically and resume once cooled — protecting your investment.

🔧 Easy Servo Replacement

Gone are the days of disassembling dozens of screws to swap a servo. Our redesigned structure reduces fasteners to a minimum. A complete servo swap now takes just a few screws — no expertise required.

⚙️ Servo Speed Calibration — Use Any Brand

Our online calibration tool lets you fine-tune each servo's speed individually. Mix different brands, adjust until they move in perfect sync, and use whatever servos are most accessible to you.

Try the Calibration Tool →

📦 Modular Design & Rugged Carrying Case

Modular assembly for compact, damage-free shipping. Reassemble in minutes with our guided online calibration tool.

Every kit includes a waterproof, dust-proof, crush-proof carrying case that doubles as an everyday toolbox.

🔌 Integrated Cable Management

Rotation module (D27) and Fleshlight valve (D25) are pin-mounted to the chassis with all cables routed through internal channels. Clean appearance, zero snagging.

🛠️ Custom ESP32 PCB with Expansion Ports

Our purpose-built PCB features abundant pin headers and interfaces — ready for current needs and future upgrades alike.

📋 Specifications

Frame Material	Metal servo brackets + 3D-printed shell
Support Rods	Metal (×4)
Thermal Protection	NTC thermistor with configurable threshold
Twist Module	D27 (included)
Valve Module	D25 Fleshlight valve (included)
Controller	Custom ESP32 PCB with expansion ports
Firmware	Open-source ESP32-SR6-Tool
Color	Black & Red
Desk Mount	Dual C-clamp (included)

📦 What's in the Box

SR6 Main Device	×1
Rugged Protective Carrying Case	×1
Twist Module	×1
Fleshlight Valve	×1
Rotation Module Mounting Bracket	×1
Dual C-Clamp Desk Mount	×1
2m USB Data Cable	×1
Power Adapter	×1
Straps	×2
Metal Support Rods	×4
3D-Printed Forearm Rods	×2
Screws & Hardware Kit	×1

📌 Before You Buy

Simple Assembly Required: For safer shipping, the product is shipped partially disassembled. Assembly tools are included — it takes just a few minutes to set up.
PCB Appearance Note: The PCB has multiple revisions. The unit you receive may look slightly different from the product images, but all features and functions remain the same. Rest assured, performance is unchanged.

Need to customize your kit? Contact us before ordering and we'll provide a revised quote.