update readme

Electricals/Examples/[DFR1141]Full EVA Carrier for LattePanda Mu/README.md

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 Currently, only a **preview version** of the schematic and Gerber files are available for reference.
 
-The KiCAD design files are in progress and will be updated here upon completion.
+![DFR1141](./DFR1141.jpg)

Electricals/Examples/[DFR1142]Lite Carrier for LattePanda Mu/README.md

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+# DFR1142 Lite Carrier for LattePanda Mu
+
+![DFR1142](./[DFR1142]Lite%20Carrier%20for%20LattePanda%20Mu.jpg)
+
+## Specification
+
+### Power Input
+
+- USB Type-C PD: 15V (Max 3A)
+- DC 5.5x2.5mm: 12~20V (Max 10A)
+
+### Internal Interfaces
+
+- PCIe 3.0 x4 slot (only available when using 12V power supply)
+- M.2 M Key 2230 (PCIe 3.0 x1)
+- M.2 E Key 2230 (PCIe 3.0 x1, USB2.0)
+- RTC battery socket (CR1220 3V)
+- CPU fan socket
+- Gravity-4P UART
+- Gravity-4P I2C
+
+### External Interfaces
+
+- USB 3.2 10Gbps x2
+- Gigabit Ethernet
+- USB 2.0 x2
+- HDMI 2.0
+
+### Dimension
+
+3.5 inches, 146mm×102mm