M5Stack PaperDIY Complete Kit · intermediaire · Connectez le PaperDIY au réseau WiFi pour télécharger des données et les sauvegarder localement sur la carte microSD.
Hardware: PaperDIY Complete Kit, FAT32 formatted microSD card, WiFi router. 2. Setup: Insert microSD into the dedicated slot. Configure WiFi credentials in code. 3. Wiring: No external wiring. Verify card detection via M5.SD.begin(). 4. Commands: Use WiFi.h library. Connect with WiFi.begin(ssid, password). Wait for WL_CONNECTED. Fetch data via HTTP GET. Write data to SD card using SD.open() and file.write(). Display a summary on the e-paper. 5. Verification: Check SD card content on a PC. Ensure display updates after each download. Test WiFi disconnect/reconnect. 6. Deep Dive: Implement a PSRAM buffer system (8 MB available) to store data if WiFi is unavailable, then auto-sync to SD card once connection is restored.