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+## how ot run
+> sudo apt update
+> sudo apt install -y build-essential python3-dev libatlas-base-dev cmake git 
+> mkdir -p daemon
+> cd daemon
+> uv init orangepi_service
+> cd orangepi_service
+> uv add install fastapi uvicorn chromadb sentence-transformers pypdf langchain-community python-multipart
+> CMAKE_ARGS="-DLLAMA_METAL=OFF -DCMAKE_CXX_FLAGS=-march=armv8.2-a+fp16"
+> FORCE_CMAKE=1
+> vi ~/.config/uv/uv.toml
+```
+[[index]]
+url = "https://pypi.tuna.tsinghua.edu.cn/simple"
+default = true
+```
+> export MODEL_PATH="models/qwen-0.5b-q4_k_m.gguf"
+> export CHROMA_DIR="./chroma_db"
+> export UPLOAD_DIR="./uploaded_pdfs"
+> mkdir -p models
+> wget -O models/qwen-0.5b-q4_k_m.gguf https://huggingface.co/Qwen/Qwen1.5-0.5B-GGUF/resolve/main/qwen1_5-0_5b-q4_k_m.gguf
+> uv run service.py
+
+## Set Static IP
+> ip a
+> sudo nano /etc/netplan/orangepi-default.yaml
+```
+network:
+  version: 2
+  renderer: networkd
+  ethernets:
+    enp49s0:              # Replace 'eth0' with the name you found from 'ip a'
+      dhcp4: no        # Disable DHCP client for IPv4
+      addresses:
+        - 192.168.1.101/24   # Your desired static IP and subnet mask
+      routes:
+        - to: default
+          via: 192.168.1.1   # Your router's gateway address
+      nameservers:
+        addresses: [8.8.8.8, 8.8.4.4]  # DNS servers (e.g., Google DNS)
+
+
+```
+> sudo netplan try
+> sudo netplan apply
+> sudo nano /etc/systemd/system/orangepi_rag.service
+```
+[Unit]
+Description=Orange Pi RAG Service
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+User=orangepi
+Environment="HF_HUB_OFFLINE=1"
+Environment="TRANSFORMERS_OFFLINE=1"
+WorkingDirectory=/home/orangepi/daemon/orangepi_service
+Environment="PATH=/home/orangepi/daemon/orangepi_service/.venv/bin"
+ExecStart=/home/orangepi/daemon/orangepi_service/.venv/bin/python service.py
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target
+```
+> sudo systemctl daemon-reload
+> sudo systemctl enable orangepi_rag.service
+> sudo systemctl start orangepi_rag.service
+
+## Test API
+> curl http://0.0.0.0:8080/health
+> curl -X POST http://0.0.0.0:8080/answer -H "Content-Type: application/json" -d '{"question": "What is the capital of France?"}'