ThreeByte.LinkLib.ProjectorLink 1.0.9

.NET 10.0 .NET Standard 2.0

dotnet add package ThreeByte.LinkLib.ProjectorLink --version 1.0.9

NuGet\Install-Package ThreeByte.LinkLib.ProjectorLink -Version 1.0.9

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="ThreeByte.LinkLib.ProjectorLink" Version="1.0.9" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="ThreeByte.LinkLib.ProjectorLink" Version="1.0.9" />
                    

                            Directory.Packages.props

<PackageReference Include="ThreeByte.LinkLib.ProjectorLink" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add ThreeByte.LinkLib.ProjectorLink --version 1.0.9

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: ThreeByte.LinkLib.ProjectorLink, 1.0.9"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package ThreeByte.LinkLib.ProjectorLink@1.0.9

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=ThreeByte.LinkLib.ProjectorLink&version=1.0.9
                    

                            Install as a Cake Addin

#tool nuget:?package=ThreeByte.LinkLib.ProjectorLink&version=1.0.9
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

🎬 ThreeByte.LinkLib.ProjectorLink

PJLink protocol client for controlling projectors over TCP — power on/off, state queries, and device info.

✨ Features

Feature	Description
🎬 PJLink 1.0	Full implementation of the PJLink Class 1 protocol
🔐 Authentication	MD5 password authentication when required by projector
⚡ Power Control	Turn projectors on and off programmatically
📊 State Queries	Query power state: Off, On, Cooling, Warming Up
ℹ️ Device Info	Retrieve manufacturer, product name, and projector name
🔔 Error Events	Event-driven error reporting

📦 Installation

dotnet add package ThreeByte.LinkLib.ProjectorLink

or via the NuGet Package Manager:

Install-Package ThreeByte.LinkLib.ProjectorLink

🚀 Quick Start

using ThreeByte.LinkLib.ProjectorLink;

// Connect to a projector (default PJLink port 4352)
using var projector = new Projector("192.168.1.200");

// Power on
bool success = projector.TurnOn();
Console.WriteLine(success ? "✅ Projector turning on" : "❌ Power on failed");

// Query state
PowerStatus status = projector.GetState();
Console.WriteLine($"Status: {status}");
// Output: Status: WARMUP → ON

// Get device info
string info = projector.GetInfo();
Console.WriteLine($"Projector: {info}");
// Output: Projector: Epson EB-L1755U (Main Hall)

// Power off
projector.TurnOff();

With Authentication

// Some projectors require a password
using var projector = new Projector("192.168.1.200", password: "admin123");

projector.ErrorOccurred += (s, ex) =>
    Console.WriteLine($"Projector error: {ex.Message}");

projector.TurnOn();

Custom Port

// Non-standard PJLink port
using var projector = new Projector("10.0.0.50", port: 5000, password: "secret");

📖 API Reference

`Projector`

Constructors

Projector(string host)                                    // Default port 4352, no auth
Projector(string host, int port)                          // Custom port, no auth
Projector(string host, string password)                   // Default port, with auth
Projector(string host, int port, string password)         // Custom port + auth

Properties

Property	Type	Description
`Address`	`string`	Formatted as `"host/port"`

Methods

Method	Returns	Description
`TurnOn()`	`bool`	Sends power-on command. Returns `true` on success
`TurnOff()`	`bool`	Sends power-off command. Returns `true` on success
`GetState()`	`PowerStatus`	Queries the current power state
`GetInfo()`	`string`	Returns `"Manufacturer Product (Name)"`
`Dispose()`	`void`	Releases resources

Events

Event	Args	Description
`ErrorOccurred`	`Exception`	Fires on communication or protocol errors

`PowerStatus` Enum

Value	Int	Description
`OFF`	0	Projector is powered off
`ON`	1	Projector is running normally
`COOLING`	2	Projector is cooling down after power-off
`WARMUP`	3	Projector lamp is warming up after power-on
`UNKNOWN`	4	State could not be determined

`CommandResponse` Enum

Value	Description
`SUCCESS`	Command executed successfully
`UNDEFINED_CMD`	Projector does not recognize the command
`OUT_OF_PARAMETER`	Invalid parameter sent
`UNAVAILABLE_TIME`	Command not available in current state
`PROJECTOR_FAILURE`	Projector hardware error
`AUTH_FAILURE`	Authentication failed
`COMMUNICATION_ERROR`	Network or protocol error

🏗️ Architecture

┌──────────────────────────────────────────┐
│               Projector                  │
│                                          │
│  TurnOn() ──┐                            │
│  TurnOff()──┤  ┌──────────────────────┐  │
│  GetState()─┤  │    PJLink Commands   │  │
│  GetInfo()──┘  │                      │  │
│                │  PowerCommand        │  │
│                │  ManufacturerName     │  │
│                │  ProductName         │  │
│                │  ProjectorName       │  │
│                └──────────┬───────────┘  │
│                           │              │
│                           ▼              │
│                ┌──────────────────────┐   │
│                │  TCP Connection      │   │
│                │  (per-command)       │   │
│                │                      │   │
│                │  ┌────────────────┐  │   │
│                │  │ MD5 Auth       │  │   │
│                │  │ (if required)  │  │   │
│                │  └────────────────┘  │   │
│                └──────────────────────┘   │
└──────────────────────────────────────────┘

📋 PJLink Protocol Reference

This library implements the PJLink Class 1 specification:

PJLink Command	Method	Description
`%1POWR 1`	`TurnOn()`	Power on
`%1POWR 0`	`TurnOff()`	Power off
`%1POWR ?`	`GetState()`	Query power status
`%1INF1 ?`	(via `GetInfo()`)	Query manufacturer
`%1INF2 ?`	(via `GetInfo()`)	Query product name
`%1NAME ?`	(via `GetInfo()`)	Query projector name

Default PJLink port: TCP 4352

🎯 Platform Support

Platform	Supported
.NET 10.0	✅
.NET Standard 2.1	✅
.NET Standard 2.0	✅
Windows	✅
Linux	✅
macOS	✅

📄 License

Part of the ThreeByte.LinkLib family of communication libraries.

Product	Compatible and additional computed target framework versions.
.NET	net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.
.NET Core	netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard2.0 is compatible. netstandard2.1 is compatible.
.NET Framework	net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed.
MonoAndroid	monoandroid was computed.
MonoMac	monomac was computed.
MonoTouch	monotouch was computed.
Tizen	tizen40 was computed. tizen60 was computed.
Xamarin.iOS	xamarinios was computed.
Xamarin.Mac	xamarinmac was computed.
Xamarin.TVOS	xamarintvos was computed.
Xamarin.WatchOS	xamarinwatchos was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

.NETStandard 2.0
- Microsoft.Extensions.Logging (>= 10.0.5)
- ThreeByte.LinkLib.Shared (>= 1.0.9)
.NETStandard 2.1
- Microsoft.Extensions.Logging (>= 10.0.5)
- ThreeByte.LinkLib.Shared (>= 1.0.9)
net10.0
- Microsoft.Extensions.Logging (>= 10.0.5)
- ThreeByte.LinkLib.Shared (>= 1.0.9)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
1.0.9	0	3/27/2026
1.0.8	27	3/25/2026
1.0.7	28	3/25/2026
1.0.6	210	1/20/2026
1.0.5	241	12/24/2025
1.0.4	711	7/9/2025
1.0.3	171	7/9/2025
1.0.2	181	7/9/2025
1.0.1	174	7/9/2025
1.0.0	175	7/9/2025

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