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The Last Host (ESP32 C3 Mini + SD Adapter)

Wi-Fi access point with a static site web server, http/https page emulation, and file operations on the SD card. Host static websites, emulate basic authentication, various services, and simple APIs, and share files across different devices within a dedicated Wi-Fi network.

Features

• Wi-Fi access point mode; SSID and password can be changed in the file Setup.ini on the SD card;
• Static site web server with support for any domains. Domains and folders are listed in the file Hosts.txt. To open the domain as a website rather than a folder of files, place the index.html file in the root directory;
• Emulation of individual http/https web pages, sites. Specify in the file Emulation.txt the list of pages, URLs, http status codes, response types, and the response itself as a file or string. To get the required values and addresses, use Wireshark on Windows and PCAPdroid on Android (with Wireshark). Don’t forget to share popular emulations;
• File management on the SD card: create folders, upload files, and delete them;
• Logging device requests to the file Logs.txt. To enable it, set the parameter logs to 1 in the Setup.ini file;

Plans

• Connection to external Wi-Fi networks;
• Security certificates for HTTPS on the SD card;
• Fixing bugs with names (probably URL encoding issues);

Wiring Diagram

Firmware

1. Install Arduino IDE.
2. Go to Tools → Manage Libraries... and install the esp32 library by Espressif System, version 2.0.6 (this older version is important for HTTPS support). If a newer version is installed, remove it and install the old one.
3. Extract the ESP32 HTTPS Server into the folder: %userprofile%\AppData\Local\Arduino15\libraries.
4. Go to Tools → Board → esp32 → ESP32C3 Dev Module and select the board's COM port.
5. Flash the sketch.
6. Format the SD card to FAT32 using Rufus or another utility, and extract the contents of the SDCard folder to SD card.
7. Connect to the Wi-Fi network TheLastHost with the password 12345678 and go to http://i.me or http://192.168.4.1.
8. Edit the configuration files: Setup.ini, Hosts.txt, Emulation.txt.

Web interface

Feedback

r57zone[at]gmail.com