kscale-actuator

Rust library for controlling actuators (Robstride servo motors) on K-Scale robots. CAN bus communication, position/velocity/torque control.

16 stars

Best use case

kscale-actuator is best used when you need a repeatable AI agent workflow instead of a one-off prompt.

Rust library for controlling actuators (Robstride servo motors) on K-Scale robots. CAN bus communication, position/velocity/torque control.

Teams using kscale-actuator should expect a more consistent output, faster repeated execution, less prompt rewriting.

When to use this skill

  • You want a reusable workflow that can be run more than once with consistent structure.

When not to use this skill

  • You only need a quick one-off answer and do not need a reusable workflow.
  • You cannot install or maintain the underlying files, dependencies, or repository context.

Installation

Claude Code / Cursor / Codex

$curl -o ~/.claude/skills/kscale-actuator/SKILL.md --create-dirs "https://raw.githubusercontent.com/plurigrid/asi/main/plugins/asi/skills/kscale-actuator/SKILL.md"

Manual Installation

  1. Download SKILL.md from GitHub
  2. Place it in .claude/skills/kscale-actuator/SKILL.md inside your project
  3. Restart your AI agent — it will auto-discover the skill

How kscale-actuator Compares

Feature / Agentkscale-actuatorStandard Approach
Platform SupportNot specifiedLimited / Varies
Context Awareness High Baseline
Installation ComplexityUnknownN/A

Frequently Asked Questions

What does this skill do?

Rust library for controlling actuators (Robstride servo motors) on K-Scale robots. CAN bus communication, position/velocity/torque control.

Where can I find the source code?

You can find the source code on GitHub using the link provided at the top of the page.

SKILL.md Source

# K-Scale Actuator Skill

**Trit**: -1 (MINUS - hardware interface/verification)
**Color**: #B9172E (Deep Red)
**URI**: skill://kscale-actuator#B9172E

## Overview

Rust library for controlling actuators on K-Scale robots. Supports Robstride servo motors with CAN bus communication. Provides position, velocity, and torque control modes.

## Architecture

```
┌────────────────────────────────────────────────────────────────┐
│                    ACTUATOR CONTROL STACK                       │
├────────────────────────────────────────────────────────────────┤
│                                                                 │
│  ┌──────────────────────────────────────────────────────────┐  │
│  │                    KOS Firmware                           │  │
│  │                 ActuatorService (gRPC)                    │  │
│  └──────────────────────────────────────────────────────────┘  │
│                            │                                    │
│                            ▼                                    │
│  ┌──────────────────────────────────────────────────────────┐  │
│  │                  actuator crate (Rust)                    │  │
│  │  ┌─────────────────────────────────────────────────────┐ │  │
│  │  │  ActuatorController                                 │ │  │
│  │  │  ├── configure(kp, kd, torque_limit)               │ │  │
│  │  │  ├── command_position(joint_id, position)          │ │  │
│  │  │  ├── command_velocity(joint_id, velocity)          │ │  │
│  │  │  ├── command_torque(joint_id, torque)              │ │  │
│  │  │  └── get_state() -> ActuatorState                  │ │  │
│  │  └─────────────────────────────────────────────────────┘ │  │
│  └──────────────────────────────────────────────────────────┘  │
│                            │                                    │
│                            ▼                                    │
│  ┌──────────────────────────────────────────────────────────┐  │
│  │                  robstride crate (Rust)                   │  │
│  │  ├── CAN bus communication                                │  │
│  │  ├── Motor protocol implementation                        │  │
│  │  └── Firmware interface                                   │  │
│  └──────────────────────────────────────────────────────────┘  │
│                            │                                    │
│                            ▼                                    │
│  ┌──────────────────────────────────────────────────────────┐  │
│  │                    Hardware                               │  │
│  │         Robstride Motors (CAN bus @ 1Mbps)               │  │
│  └──────────────────────────────────────────────────────────┘  │
└────────────────────────────────────────────────────────────────┘
```

## Rust API

```rust
use kscale_actuator::{ActuatorController, ActuatorConfig};

// Initialize controller
let config = ActuatorConfig {
    can_interface: "can0",
    motor_ids: vec![1, 2, 3, 4, 5, 6],
};

let mut controller = ActuatorController::new(config)?;

// Configure actuator
controller.configure(1, ActuatorParams {
    kp: 100.0,
    kd: 10.0,
    torque_limit: 40.0,
})?;

// Command position
controller.command_position(1, 0.5)?;  // radians

// Get state
let state = controller.get_state(1)?;
println!("Position: {}, Velocity: {}, Torque: {}", 
    state.position, state.velocity, state.torque);

// Low-level torque control
controller.command_torque(1, 5.0)?;  // Nm
```

## GF(3) Triads

```
kscale-actuator (-1) ⊗ kos-firmware (+1) ⊗ mujoco-scenes (0) = 0 ✓
```

## Related Skills

- `kos-firmware` (+1): Uses actuator crate via HAL
- `kbot-humanoid` (-1): K-Bot uses these actuators
- `robstride-driver` (-1): Low-level motor driver

## References

```bibtex
@misc{kscaleactuator2024,
  title={K-Scale Actuator Library},
  author={K-Scale Labs},
  year={2024},
  url={https://github.com/kscalelabs/actuator}
}
```

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