ohms

Electrical units library for embedded Rust targets focusing on ease-of-use and performance. Supports no_std environments.

Greatly inspired by the fugit crate.

All units are stored internally as u64 or i64 in their base unit.

Supported Units

• Current (μA, mA, A)
• Resistance (mΩ, Ω, kΩ, MΩ)
• Voltage (μV, mV, V, kV)
• Power (μW, mW, W, kW)

Extension Traits

Types implement their own FromInteger and FromFloat traits for convenience on the following types:

• u8
• u16
• u32
• u64
• i8
• i16
• i32
• i64
• f32
• f64

Ohm's Law

The Current, Resistance and Voltage types follow the Ohm's Law rules.

This means that you can use the / and * operators to calculate the missing value. For example, Voltage / Current will return a Resistance value.

Power Calculations

The Power type supports calculating the power from multiplying Voltage and Current values.

Installation

You can add this crate via crates.io:

$ cargo add ohms

Usage

use ohms::prelude::*;

let voltage = 5.volts();
let current = 1.milli_amps();
let resistance = voltage / current;

let power = voltage * current;

assert_eq!(resistance.ohms(), 5000);
assert_eq!(power.milli_watts(), 5000);

Documentation

You can find the documentation here.