--- title: "Arduino Tutorial : Telnet Client" url: "https://maker.wiznet.io/WIZnet/projects/arduino-tutorial-%3A-telnet-client/" markdown_url: "https://maker.wiznet.io/WIZnet/projects/arduino-tutorial-%3A-telnet-client/md" type: "UCC: User Created Content" author: "WIZnet" original_url: "https://myrobotduino.blogspot.kr/2016/08/telnet-client.html" published: "2023-02-17" language: "en" likes: 3 views: 436 comments: 0 source: "WIZnet Makers (https://maker.wiznet.io/)" --- # Arduino Tutorial : Telnet Client > . Original source: https://myrobotduino.blogspot.kr/2016/08/telnet-client.html ## Article **DETAILS** This example connects to a Telnet server using an[Ethernet shield](http://www.lelong.com.my/arduino-ethernet-w5100-shield-micro-sd-card-slot-robotshop-I2404949-2007-01-Sale-I.htm). ## **Step 1: What You Need?** 1 x [Arduino Board](http://www.lelong.com.my/merchant/robotshop-Arduino-C1-206687-1.htm) ( [Arduino UNO](http://www.lelong.com.my/arduino-compatible-dccduino-uno-r3-atmel-atmega-328p-ver2-robotshop-I5277877-2007-01-Sale-I.htm) used in this tutorial) 1 x [Arduino Ethernet Shield](http://www.lelong.com.my/arduino-ethernet-w5100-shield-micro-sd-card-slot-robotshop-I2404949-2007-01-Sale-I.htm) ## **Software Required** – A telnet server – Alternatively, [Processing](http://www.processing.org/) has a ChatServer example that works well for this purpose ## **Step 2: Build Your Circuit.** The [Ethernet shield](http://www.lelong.com.my/arduino-ethernet-w5100-shield-micro-sd-card-slot-robotshop-I2404949-2007-01-Sale-I.htm) allows you to connect a WizNet Ethernet controller to the [Arduino boards](http://www.lelong.com.my/merchant/robotshop-Arduino-C1-206687-1.htm) via the SPI bus. It uses pins 10, 11, 12, and 13 for the SPI connection to the WizNet. Later models of the [Ethernet shield](http://www.lelong.com.my/arduino-ethernet-w5100-shield-micro-sd-card-slot-robotshop-I2404949-2007-01-Sale-I.htm) also have an SD Card on board. Digital pin 4 is used to control the slave select pin on the SD card. [![](https://4.bp.blogspot.com/-7J5x-NNmThE/V591WCRRoKI/AAAAAAAACuo/mE8WIh18d68Ajcg9W6beRCgaXO3wc0BgwCLcB/s400/EthernetShield_bb.png)](https://4.bp.blogspot.com/-7J5x-NNmThE/V591WCRRoKI/AAAAAAAACuo/mE8WIh18d68Ajcg9W6beRCgaXO3wc0BgwCLcB/s1600/EthernetShield_bb.png) ## **Step 3: Upload The Code.** – Details are explained! You just do step by step! [![](https://2.bp.blogspot.com/-NQyG2tC3FWY/V3SkaGHpQbI/AAAAAAAAAD4/oOEb4hvwgXYj5vp_kiTHq-Kf6N-wxXrVQCKgB/s640/21.png)](https://2.bp.blogspot.com/-NQyG2tC3FWY/V3SkaGHpQbI/AAAAAAAAAD4/oOEb4hvwgXYj5vp_kiTHq-Kf6N-wxXrVQCKgB/s1600/21.png) ![](https://2.bp.blogspot.com/-NMW9L0CMtHk/V3SlE9yZ8KI/AAAAAAAAAEE/UDgebBaJcUMu74uGsE-sdJzNTzLwah4ZACKgB/s640/22.PNG) [Code_Link](https://codebender.cc/utilities/download/356927?referrer=myrobotduino) Dated : Friday, August 05, 2016 Source : https://myrobotduino.blogspot.kr/2016/08/telnet-client.html Author : [Robot edu](https://plus.google.com/111138818629979878874) --- Source: https://maker.wiznet.io/WIZnet/projects/arduino-tutorial-%3A-telnet-client/