50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
# Pi Dashboard
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Raspberry Pi system monitor running on a Waveshare ESP32-S3 RLCD 4.2" board. Connects to a Pi over WebSocket, parses JSON stats, and renders a live dashboard on a 400x300 1-bit monochrome reflective LCD using LVGL.
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## Hardware
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- **Board:** Waveshare ESP32-S3 RLCD 4.2"
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- **Display:** 400x300 reflective LCD (1-bit monochrome, no backlight needed)
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- **Sensors:** SHTC3 temp/humidity (I2C 0x70), PCF85063 RTC (I2C 0x51)
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## Architecture
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```
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Pi (server) ESP32-S3 (client)
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stats_server.py --WS/JSON--> ws_client --> dashboard_ui (LVGL)
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+ local sensors (SHTC3)
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```
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The Pi runs a WebSocket server that pushes system stats (CPU, memory, disk, temperature, network, services) as JSON every 2 seconds. The ESP32 parses the JSON and updates LVGL widgets. A data staleness watchdog forces reconnection if the server goes silent.
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## Configuration
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Edit `components/esp_wifi_bsp/wifi_config.h`:
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```c
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#define WIFI_SSID "your_ssid"
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#define WIFI_PASSWORD "your_password"
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#define WS_SERVER_URI "ws://192.168.x.x:8765"
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```
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## Build and Flash
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Requires ESP-IDF v5.5+.
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```bash
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idf.py build
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idf.py flash monitor
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```
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## Mock Server
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Test without a real Pi using the mock server:
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```bash
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pip install -r pi/requirements.txt
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python pi/mock_server.py
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```
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Sends randomized stats on `ws://0.0.0.0:8765` every 2 seconds.
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