![]() Looking for the easiest way to send and receive data from an ESP8266? A great starting point is understanding how to configure your ESP8266 to send and receive a UDP packet. You can use UDP to communicate with other ESP8266 devices, your computer or many other WiFi devices. Hping is a TCP/IP packet forging tool with embedded Tcl scripting functionality. Version v8.3.5 macOS download Or Homebrew : brew install packetsender Version v8.3. ![]() In this tutorial we will write a simple application in the Arduino IDE that will receive a text string over UDP, print it to the serial console and then respond back with a confirmation message. Installer for Windows Or winget : winget install packetsender Version v8.3.5 Portable Version for Windows Unzip. You will need to have the Arduino IDE installed and configured to flash ESP devices. ![]() You will also need an ESP-based board such as the Wemos D1 Mini, as this will not work with a standard Arduino board. I would recommend that you first follow my tutorial on how to configure the Arduino IDE for ESP devices and connect your device to WiFi. The tutorial is written for the Wemos D1 Mini but it applies to any ESP-based board compatible with the Arduino ESP core. I would also recommend that you use PacketSender to test communications after you flash the device, you can download it for free. Alternatively you can use a different method to send and receive the UDP packets if you prefer. PING You can use the PING command to send test packets to a particular device. If you have read the previous tutorial how to configure the Arduino IDE for ESP devices, then you will have seen the code for connecting an ESP device to WiFi with Arduino. Check for a routing loop by using the tracert or traceroute command. Get command packet sender how to Get command packet sender how to TechNet does a good job at describing the cmdlets, but there is also a pretty good chance that it will be rather cumbersome to figure out how to get started. Ideally you should at least read through the WiFi section of this tutorial to get an idea of how this works. ![]()
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