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+# OBD Display (2024 experiments)
+
+Earlier attempt to show car speed from an ELM327 OBD-II adapter on the JC3636W518.
+Because the ESP32-S3 has no Bluetooth Classic, the design used a second (classic) ESP32 as a bridge:
+
+```
+ELM327 --(BT Classic SPP)--> classic ESP32 (elm327_wifi_bridge) --(WiFi AP, HTTP /speed)--> JC3636W518 (display_speed_wifi)
+```
+
+Split out of `2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/` on 2026-10-22. History is in git.
+
+## Sketches
+| Folder | Runs on | What it does | Was |
+|---|---|---|---|
+| `display_speed_wifi/` | JC3636W518 | GIF background from SD (`A:wallpaper.gif`) + joins AP `ESP32-Access-Point`, polls `http://192.168.4.1/speed`, shows it in a label | `ST77916_LVGL_DEMO/8.4/` |
+| `display_gif_sd/` | JC3636W518 | GIF from SD (`A:wallpaper.gif`) + static text label | `ST77916_LVGL_DEMO/working version/` |
+| `display_gif_embedded/` | JC3636W518 | GIF compiled into firmware (`loligod.c`, 13.9 MB source). WiFi code commented out. Stops in `setup()` if no SD card | `ST77916_LVGL_DEMO/` (top level) |
+| `elm327_wifi_bridge/` | **classic ESP32** (not S3) | BT Classic → ELM327 named `OBDII` (PIN 1234), WiFi AP `ESP32-Access-Point` / `123456789`, serves `/speed` (kph). Needs esp32 core 2.0.x, ESPAsyncWebServer, ELMduino | `ST77916_LVGL_DEMO/esp23_elm327_to_wifi/` |
+| `elmulator/` | classic ESP32 | ELMulator library + examples: fake ELM327 over BT/WiFi for testing without a car | `ST77916_LVGL_DEMO/ELMulator-master/` |
+| `assets/gifs/` | — | GIF files (`dump/` = unused collection) | `ST77916_LVGL_DEMO/gifs/` |
+| `_archive/lvgl9_broken/` | — | Unfinished LVGL 9 port, does not compile | `ST77916_LVGL_DEMO/9.1/` |
+
+## Notes
+- Each display sketch carries its own `pincfg.h`, `scr_st77916.h` and `lv_conf.h`. The Arduino LVGL library does **not** read the sketch's `lv_conf.h` — the one used is `Documents\Arduino\libraries\lv_conf.h`. Copy the sketch's version there before building:
+  - `display_speed_wifi`: LVGL heap 4 MB in PSRAM (`ps_malloc`)
+  - `display_gif_sd`: LVGL heap 7 MB in PSRAM
+- `montserrat_100.c` (100 px digits font) is present but not referenced by any sketch yet.
+- `display_gif_embedded` will not fit the 3 MB "Huge APP" partition with `loligod.c`; needs a custom partition table or the GIF on SD.
+- SD-based GIFs use LVGL drive letter `A:`, which needs an LVGL filesystem driver configured in `lv_conf.h`.
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/ST77916_LVGL_DEMO.ino b/10-OBD-Display-2024/_archive/lvgl9_broken/ST77916_LVGL_DEMO.ino
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rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Custom_ELMulator/definitions.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.cpp
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.h
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ATCommands.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.cpp
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.h
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ELMulator.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.h
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.ino b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.ino
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.ino
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/ESP32_Simple_ELMulator.ino
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.cpp
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.h
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDSerialComm.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.cpp
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.h
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/OBDWiFiComm.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.cpp
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/PidProcessor.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/definitions.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/definitions.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Simple/ESP32_Simple_ELMulator/definitions.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Simple/ESP32_Simple_ELMulator/definitions.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.cpp
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ATCommands.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.cpp
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ELMulator.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.ino b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.ino
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.ino
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/ESP32_WiFi_Custom_ELMulator.ino
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.cpp
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDSerialComm.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.cpp
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/OBDWiFiComm.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.cpp b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.cpp
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.cpp
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.cpp
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.h
rename to 10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/PidProcessor.h
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/definitions.h b/10-OBD-Display-2024/elmulator/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/definitions.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/examples/ESP32_Wifi/ESP32_WiFi_Custom_ELMulator/definitions.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/license.txt b/10-OBD-Display-2024/elmulator/license.txt
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/ATCommands.cpp b/10-OBD-Display-2024/elmulator/src/ATCommands.cpp
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/ATCommands.h b/10-OBD-Display-2024/elmulator/src/ATCommands.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/ELMulator.cpp b/10-OBD-Display-2024/elmulator/src/ELMulator.cpp
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/ELMulator.h b/10-OBD-Display-2024/elmulator/src/ELMulator.h
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rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/ELMulator.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/OBDSerialComm.cpp b/10-OBD-Display-2024/elmulator/src/OBDSerialComm.cpp
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/OBDSerialComm.h b/10-OBD-Display-2024/elmulator/src/OBDSerialComm.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/OBDWiFiComm.cpp b/10-OBD-Display-2024/elmulator/src/OBDWiFiComm.cpp
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/OBDWiFiComm.h b/10-OBD-Display-2024/elmulator/src/OBDWiFiComm.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/PidProcessor.cpp b/10-OBD-Display-2024/elmulator/src/PidProcessor.cpp
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/PidProcessor.h b/10-OBD-Display-2024/elmulator/src/PidProcessor.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master/src/definitions.h b/10-OBD-Display-2024/elmulator/src/definitions.h
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Arduino set up.png b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Arduino set up.png
deleted file mode 100644
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Compilation instructions.txt b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Compilation instructions.txt
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index 7cb7d00..0000000
--- a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Compilation instructions.txt	
+++ /dev/null
@@ -1,14 +0,0 @@
-Requires Arduino 3.0.1 and above
-
-Install the ESP32_Screen (0.1.4) library and
-ESP32_IO_Expander(0.0.2)library
-LVGL installation library 8.4.0 and below
-
-1. After installation, copy lv_conf. h to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ directory
-
-2. Move the demos folder under C: \ Users \ your username \ Documents \ Arduino \ libraries \ lvgl \ to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ lvgl \ src \ directory
-
-
-Adjust Arduino IDE according to the settings in the screenshot
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master.zip b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/ELMulator-master/ELMulator-master.zip
deleted file mode 100644
index 55537be..0000000
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Library Version Description.png b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/Library Version Description.png
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Arduino set up.png b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Arduino set up.png
deleted file mode 100644
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Compilation instructions.txt b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Compilation instructions.txt
deleted file mode 100644
index 7cb7d00..0000000
--- a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Compilation instructions.txt	
+++ /dev/null
@@ -1,14 +0,0 @@
-Requires Arduino 3.0.1 and above
-
-Install the ESP32_Screen (0.1.4) library and
-ESP32_IO_Expander(0.0.2)library
-LVGL installation library 8.4.0 and below
-
-1. After installation, copy lv_conf. h to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ directory
-
-2. Move the demos folder under C: \ Users \ your username \ Documents \ Arduino \ libraries \ lvgl \ to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ lvgl \ src \ directory
-
-
-Adjust Arduino IDE according to the settings in the screenshot
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Library Version Description.png b/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/working version/Library Version Description.png
deleted file mode 100644
index 1d2a554..0000000
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diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Arduino set up.png b/2-Program Example/Demo_Arduino/docs/Arduino set up.png
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Arduino set up.png
rename to 2-Program Example/Demo_Arduino/docs/Arduino set up.png
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Compilation instructions.txt b/2-Program Example/Demo_Arduino/docs/Compilation instructions.txt
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Compilation instructions.txt
rename to 2-Program Example/Demo_Arduino/docs/Compilation instructions.txt
diff --git a/2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Library Version Description.png b/2-Program Example/Demo_Arduino/docs/Library Version Description.png
similarity index 100%
rename from 2-Program Example/Demo_Arduino/ST77916_LVGL_DEMO/9.1/Library Version Description.png
rename to 2-Program Example/Demo_Arduino/docs/Library Version Description.png
diff --git a/2-Program Example/Demo_Arduino/sd/Arduino set up.png b/2-Program Example/Demo_Arduino/sd/Arduino set up.png
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index e5cf426..0000000
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diff --git a/2-Program Example/Demo_Arduino/sd/Compilation instructions.txt b/2-Program Example/Demo_Arduino/sd/Compilation instructions.txt
deleted file mode 100644
index 7cb7d00..0000000
--- a/2-Program Example/Demo_Arduino/sd/Compilation instructions.txt	
+++ /dev/null
@@ -1,14 +0,0 @@
-Requires Arduino 3.0.1 and above
-
-Install the ESP32_Screen (0.1.4) library and
-ESP32_IO_Expander(0.0.2)library
-LVGL installation library 8.4.0 and below
-
-1. After installation, copy lv_conf. h to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ directory
-
-2. Move the demos folder under C: \ Users \ your username \ Documents \ Arduino \ libraries \ lvgl \ to
-C: \ Users \ Your username \ Documents \ Arduino \ libraries \ lvgl \ src \ directory
-
-
-Adjust Arduino IDE according to the settings in the screenshot
diff --git a/2-Program Example/Demo_Arduino/sd/Library Version Description.png b/2-Program Example/Demo_Arduino/sd/Library Version Description.png
deleted file mode 100644
index 1d2a554..0000000
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diff --git a/CLAUDE.md b/CLAUDE.md
index 6ffc525..84858f5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -7,6 +7,7 @@ Goal: write a **new custom program** for this device.
 - Before starting any task, **ask questions first** and make sure requirements are clearly understood.
 - While working, **describe what is being done** at each step.
 - Keep this file updated with new findings.
+- The folder is a **git repo** (local only, no remote). Commit `9ee85bf` = original kit snapshot before any cleanup.
 
 ## Hardware summary
 | Item | Detail |
@@ -63,15 +64,8 @@ Note: `scr_lvgl_init()` already calls `lv_init()`; the demo `.ino` calls it agai
 | Folder | What it is |
 |---|---|
 | `1-Instructions` | Spec PDF (duplicate), AIDA64 remote-sensor layout `aida_remote_1.85.rslcd`, MJPEG conversion tool (Windows .NET, converts video to 360×360 MJPEG 25 fps) |
-| `2-Program Example/Demo_Arduino` | Libraries, `sd/` (SD card listing example), `ST77916_LVGL_DEMO/` (main LVGL demo) |
-| `…/ST77916_LVGL_DEMO/8.4` | Clean LVGL 8.x demo version |
-| `…/ST77916_LVGL_DEMO/9.1` | **Broken / half-ported** LVGL 9 attempt (garbled code, touch commented out) — don't use |
-| `…/ST77916_LVGL_DEMO/working version` | Earlier working copy |
-| `…/ST77916_LVGL_DEMO/*.ino` (top level) | **Modified** (not vendor) — plays a large GIF compiled in (`loligod.c`, 13.9 MB C array) + WiFi HTTP client polling `http://192.168.4.1/speed` |
-| `…/esp23_elm327_to_wifi` | Companion sketch for a *second* ESP32: Bluetooth ELM327 (OBD-II) → WiFi AP "ESP32-Access-Point" serving `/speed` (needs esp32 core 2.0.x, ESPAsyncWebServer, ELMduino) |
-| `…/ELMulator-master` | ELM327 emulator (zip) for testing OBD without a car |
-| `…/gifs` | GIF assets (+ `dump/`) |
-| `…/montserrat_100.c` | Custom 100 px Montserrat font (digits, for large speed readout) |
+| `2-Program Example/Demo_Arduino` | **Vendor only:** `library/` (3 libs), `lv_conf.h` (vendor original), `sd/` (SD listing example; its lv_conf.h has FATFS edits), `docs/` (setup screenshots + compile instructions). The vendor's original LVGL demo sketch no longer exists unmodified. |
+| `10-OBD-Display-2024` | **Earlier OBD speed-display project**, split into separate sketches — see its `README.md`: `display_speed_wifi`, `display_gif_sd`, `display_gif_embedded`, `elm327_wifi_bridge` (classic ESP32), `elmulator`, `assets/gifs`, `_archive/lvgl9_broken` |
 | `3-Specification` | Spec sheet (factory firmware features, interface photo) |
 | `4-Chip manual` | ESP32-S3R8 datasheet, PCM5100A datasheet |
 | `5-Dimension` | Mechanical drawings (JPG + DWG) |