BOM-DAT/Antenna/antenna-DAT.md
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# antenna
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-### antenna type
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+## antenna shape, size and gain
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| type | rod | paddle |
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| -------- | ---------------------------- | ---------------------------- |
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| gain | 2dbi | 8dbi |
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| Features | - | foldable |
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+## Connection Type
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+
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+- Wire or Pin Soldering
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+- u.FL IPEX
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+- SMA inner-hole or inner-pin
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+
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+
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+
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+
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### 2.4 antenna: wifi, bluetooth
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for sticking inside of enclosure
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Tech/SBC/RPI-dat/RPI-CM-dat.md
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+
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+
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+# RPI-CM-dat
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+
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+The Raspberry Pi Compute Module is a small, powerful, and customizable single-board computer designed for embedded applications. It is based on the same architecture as the Raspberry Pi boards but in a more compact form factor. The Compute Module provides a more flexible and modular approach compared to the standard Raspberry Pi boards.
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+
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+Here are some key features of the Raspberry Pi Compute Module:
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+
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+- Broadcom BCM2835 processor with ARM Cortex-A7 CPU
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+- 512MB/1GB RAM options
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+- 4GB eMMC flash memory (optional)
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+- 200-pin SODIMM connector for easy integration
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+- HDMI and USB interfaces via breakout board
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+- Camera and display interfaces
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+- Support for industrial temperature range (-20°C to +70°C)
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+- Support for various operating systems, including Linux and Windows 10 IoT Core
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+
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+To learn more about the Raspberry Pi Compute Module, you can visit the official Raspberry Pi website:
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+
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+- Compute Module: https://www.raspberrypi.org/products/compute-module-3-plus/
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+- Compute Module Datasheet: https://datasheets.raspberrypi.org/compute/CM3Plus/CM3Plus-datasheet.pdf
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+- If you are looking for code examples and projects related to the Raspberry Pi Compute Module, you can explore the Raspberry Pi GitHub repository: Raspberry Pi GitHub: https://github.com/raspberrypi
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+
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+
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+![](2023-10-27-16-45-37.png)
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+
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+
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+## Specs
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+
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+![](2023-10-27-16-47-11.png)
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+
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+
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+## Expansion Board
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+
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+![](2023-10-27-16-49-05.png)
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+
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+## IO Expansion board
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+
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+![](2023-10-27-16-53-47.png)
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+
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+
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+## Combination
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+
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+- CM4001008
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+
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+## CN
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+
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+![](2023-10-27-16-47-35.png)
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+
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+![](2023-10-27-16-46-54.png)
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Tech/SBC/RPI-dat/RPI-dat.md
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# raspberry pi dat
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+
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+## RPI4
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+
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+- BCM2711B0: cortex-A72
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+
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+
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+
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+
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## I2C
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- turn on I2C functions at [[raspi-config]]