Add GPIO Zero code example to Analog Zero
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#Analog Zero
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The RasPiO Analog Zero offers a compact, inexpensive, easy way to add eight analog channels to your Raspberry Pi. RasPiO Analog Zero uses an MCP3008 analog to digital converter. It's an SPI driven, 10-bit, 8-channel ADC.
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The RasPiO Analog Zero offers a compact, inexpensive, easy way to add eight analogue channels to your Raspberry Pi. RasPiO Analog Zero uses an MCP3008 analog to digital converter. It's an SPI driven, 10-bit, 8-channel ADC.
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With RasPiO Analog Zero you can:
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* use potentiometer dials for control and display
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* read analog sensors or voltages
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* make your own embedded device with minimal footprint
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## Code
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```python
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from gpiozero import MCP3008
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from time import sleep
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left_pot = MCP3008(0)
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light = MCP3008(1)
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temperature = MCP3008(2)
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right_pot = MCP3008(3)
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while True:
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print("Left pot value is {}".format(left_pot.value))
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print("Light sensor value is {}".format(light.value))
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print("Temperature sensor value is {}".format(temperature.value))
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print("Right pot value is {}".format(right_pot.value))
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sleep(1)
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```
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[GPIO Zero docs: MCP3008](http://gpiozero.readthedocs.io/en/v1.3.1/api_spi.html#gpiozero.MCP3008)
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