nanoFramework.Iot.Device.Rdm6300 1.0.1

Prefix Reserved
.NET Framework This package is compatible with all versions of .NET Framework. 
dotnet add package nanoFramework.Iot.Device.Rdm6300 --version 1.0.1
                    


                    

                
NuGet\Install-Package nanoFramework.Iot.Device.Rdm6300 -Version 1.0.1
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="nanoFramework.Iot.Device.Rdm6300" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="nanoFramework.Iot.Device.Rdm6300" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="nanoFramework.Iot.Device.Rdm6300" />
                    


                            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 nanoFramework.Iot.Device.Rdm6300 --version 1.0.1
                    


                    

                
#r "nuget: nanoFramework.Iot.Device.Rdm6300, 1.0.1"
#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 nanoFramework.Iot.Device.Rdm6300@1.0.1
#: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=nanoFramework.Iot.Device.Rdm6300&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=nanoFramework.Iot.Device.Rdm6300&version=1.0.1
                    


                            Install as a Cake Tool

RDM6300 RFID reader

The RDM6300 is a 125 kHz RFID reader module that reports tag identifiers over a fixed 9600 baud, 8-N-1 UART connection. It is a passive reader: the host receives tag frames from TX, but there is no documented command or configuration protocol to implement over RX. It is typically compatible with EM4100/EM4102 read-only tags.

Documentation

Protocol

Each read is a 14-byte ASCII hexadecimal frame. The checksum is the XOR of the five decoded data bytes: the version/customer byte followed by the four tag ID bytes.

Byte Content
0 Start of text (0x02)
1-2 Version or customer code, two hexadecimal characters
3-10 Four-byte tag ID, eight hexadecimal characters
11-12 XOR checksum, two hexadecimal characters
13 End of text (0x03)

The reader repeats the frame while a tag remains in the field, typically about every 65 ms. Consequently, TagDetected is raised for each valid frame. Applications that need one action per presentation should ignore consecutive events with the same TagId until the tag has been absent for an application-defined interval.

Wiring

Connect the reader's TX output to the microcontroller UART RX input. The reader does not require a connection to the microcontroller UART TX output.

RDM6300 ESP32 example Description
TX GPIO16 (COM2 RX) Tag data from the reader
RX Not connected Reserved; no host commands are required
GND GND Common ground
+5V 5V Module power
ANT1, ANT2 Antenna External 125 kHz antenna
LED Optional GPIO input Status output; normally high and briefly active low when a tag is read

Check the logic voltage of your module variant before connecting TX. Use a level shifter or voltage divider when its output exceeds the microcontroller input rating.

Usage

using Iot.Device.Rdm6300;
using nanoFramework.Hardware.Esp32;
using System.Diagnostics;
using System.Threading;

Configuration.SetPinFunction(Gpio.IO17, DeviceFunction.COM2_TX);
Configuration.SetPinFunction(Gpio.IO16, DeviceFunction.COM2_RX);

using Rdm6300 reader = new Rdm6300("COM2");
reader.TagDetected += (sender, tag) =>
{
    Debug.WriteLine($"Raw tag: {tag}");
    Debug.WriteLine($"Version: 0x{reader.TagVersion:X2}");
    Debug.WriteLine($"Tag ID: 0x{reader.TagId:X8}");
};

Thread.Sleep(Timeout.Infinite);

The latest complete value is available through Tag, with its decoded fields exposed through TagVersion and TagId. TryParseFrame can validate and decode a complete frame received by another transport or stored for later processing.

Product Compatible and additional computed target framework versions.
.NET Framework net is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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
1.0.1 74 9/29/2026