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labs/008_wifi_status_display/README.md

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+# Lab 008: Wi-Fi Status Display
+
+## Goal
+
+Собрать маленький IoT status display: ESP32 подключается к Wi-Fi и показывает статус на LCD 1602 I2C.
+
+## Required Components
+
+- ESP32 dev board
+- LCD 1602 I2C
+- Dupont wires
+- Multimeter
+- Wi-Fi network credentials, not committed to repo
+
+## Expected Behavior
+
+ESP32 загружается, подключается к Wi-Fi, показывает connection status, IP или heartbeat на LCD.
+
+## Pre-Flight Checklist
+
+- Выполнить `003_esp32_blink`.
+- Выполнить `006_i2c_lcd_1602`.
+- Проверить I2C address.
+- Проверить SDA/SCL voltage safety.
+- Не commit-ить Wi-Fi credentials.
+
+## Safety Notes
+
+- ESP32 GPIO strictly 3.3V.
+- Проверить LCD I2C pull-up voltage.
+- Common ground обязателен.
+- Credentials хранить вне repo или в ignored local config.
+
+## Expected Measurements
+
+- ESP32 3.3V rail stable.
+- SDA/SCL idle levels safe for ESP32.
+- LCD powered as verified in Lab 006.
+
+## Actual Measurements
+
+TODO: записать реальные измерения и network behavior.
+
+## Debugging Checklist
+
+- Если Wi-Fi не подключается, проверить credentials и serial logs.
+- Если LCD пустой, вернуться к Lab 006.
+- Если ESP32 resets, проверить питание и brownout messages.
+- Если статус зависает, добавить timeout/reconnect logic.
+
+## Conclusion
+
+TODO: краткий вывод после выполнения.

labs/008_wifi_status_display/firmware.md

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+# Firmware
+
+## Expected Behavior
+
+- Initialize serial logging.
+- Initialize LCD.
+- Connect to Wi-Fi with timeout.
+- Show status: booting, connecting, connected, failed/retrying.
+- Avoid committing credentials.
+
+## Physical Test Procedure
+
+1. Confirm LCD works with known test message.
+2. Flash Wi-Fi firmware.
+3. Watch serial logs.
+4. Verify LCD status transitions.
+5. Record failures and reconnect behavior.
+
+## Code
+
+TODO: добавить firmware после выбора workflow и credential strategy.
+
+## Actual Result
+
+TODO: записать network status, LCD output и serial observations.

labs/008_wifi_status_display/measurements.md

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+# Measurements
+
+## Expected Measurements
+
+| Point | Expected |
+| --- | --- |
+| ESP32 3.3V rail | Stable near 3.3V |
+| LCD VCC | Same as verified in Lab 006 |
+| SDA idle | Safe for ESP32 |
+| SCL idle | Safe for ESP32 |
+
+## Actual Measurements
+
+TODO: добавить реальные значения.
+
+| Point | Actual |
+| --- | --- |
+| ESP32 3.3V rail | TBD |
+| LCD VCC | TBD |
+| SDA idle | TBD |
+| SCL idle | TBD |
+
+## Observations
+
+TODO: Wi-Fi connection time, reconnect behavior, LCD messages.

labs/008_wifi_status_display/notes.md

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+# Notes
+
+## Bugs / Surprises
+
+TODO: записать Wi-Fi failures, LCD issues, power resets или credential problems.
+
+## Explanation
+
+TODO: объяснить boot/connect/display state flow.
+
+## Conclusion
+
+TODO: что стало понятно о простом IoT status device.
+
+## Next Actions
+
+TODO: следующий маленький шаг.

labs/008_wifi_status_display/schematic.md

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+# Schematic
+
+## Expected Circuit
+
+```text
+ESP32 GND -> LCD GND
+ESP32 safe VCC -> LCD VCC, based on Lab 006
+ESP32 SDA GPIO -> LCD SDA
+ESP32 SCL GPIO -> LCD SCL
+```
+
+## Actual Circuit
+
+TODO: указать GPIO, LCD VCC, I2C address и источник питания ESP32.