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LiHuashen
2019-01-11 17:02:08 +08:00
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docs/en/unit/m5camera.md
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1. **Camera Power Down** pin does not need to be connected to ESP32 GPIO. Instead it may be pulled down to ground with 10 kOhm resistor.
<img src="assets/img/product_pics/unit/unit_m5camera_03.png" width="60%" height="60%">
## Related Link
- **[Offical Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**
docs/en/unit/rs485.md
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## Feature
- Built in MAX485/SP485EEN
- Drive RS485 devices up to 12V
- GROVE interface, support [UiFlow](http://flow.m5stack.com) and [Arduino](http://www.arduino.cc)
- Two Lego installation holes
@@ -24,7 +25,7 @@
- **[Forum](http://forum.m5stack.com/)**
- Datasheet - **[MAX485](https://pdf1.alldatasheet.com/datasheet-pdf/view/73463/MAXIM/MAX485.html)**
- Datasheet - **[MAX485](https://pdf1.alldatasheet.com/datasheet-pdf/view/73463/MAXIM/MAX485.html)** - **[SP485EEN](https://pdf1.alldatasheet.com/datasheet-pdf/view/45954/SIPEX/SP485EEN.html)**
### PinMap
docs/zh_CN/unit/extio.md
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- **[官方论坛](http://forum.m5stack.com/)**
- [数据手册] - **[PCA9554PW](https://pdf1.alldatasheet.com/datasheet-pdf/view/86709/PHILIPS/PCA9554PW.html)**
- 数据手册 - **[PCA9554PW](https://pdf1.alldatasheet.com/datasheet-pdf/view/86709/PHILIPS/PCA9554PW.html)**
### 管脚映射
docs/zh_CN/unit/rs485.md
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## 描述
**<mark>RS485</mark>**是一个用于TTL电平转RS485电平的Unit，如果要控制的设备是RS485接口的话，将M5Core连接这个Unit之后，Unit就可以适配到这个设备的RS485接口，从而实现接口转换。这个Unit集成了RS-485/RS-422通信收发芯片MAX485。
**<mark>RS485</mark>**是一个用于TTL电平转RS485电平的Unit，如果要控制的设备是RS485接口的话，将M5Core连接这个Unit之后，Unit就可以适配到这个设备的RS485接口，从而实现接口转换。这个Unit集成了RS-485/RS-422通信收发芯片MAX485/SP485EEN。
## 特性
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- **[官方论坛](http://forum.m5stack.com/)**
- 数据手册 - **[MAX485](https://pdf1.alldatasheet.com/datasheet-pdf/view/73463/MAXIM/MAX485.html)**
- 数据手册 - **[MAX485](https://pdf1.alldatasheet.com/datasheet-pdf/view/73463/MAXIM/MAX485.html)** - **[SP485EEN](https://pdf1.alldatasheet.com/datasheet-pdf/view/45954/SIPEX/SP485EEN.html)**
### 管脚映射