66 lines
1.6 KiB
Markdown
66 lines
1.6 KiB
Markdown
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<!--
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---
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name: Expander Pi
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class: board
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type: adc, dac, io, rtc
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formfactor: Custom
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manufacturer: AB Electronics UK
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description: 8 ADC inputs, 2 DAC outputs, 16 IO channels and a Real-Time Clock
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url: https://www.abelectronics.co.uk/p/50/expander-pi
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github: https://github.com/abelectronicsuk
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schematic: https://www.abelectronics.co.uk/docs/pdf/schematic-expander_pi.pdf
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buy: https://www.abelectronics.co.uk/p/50/expander-pi
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image: 'ab-expander-pi.png'
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pincount: 40
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eeprom: no
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power:
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'1':
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'2':
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ground:
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'6':
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'14':
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'20':
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'25':
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'30':
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'34':
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'39':
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pin:
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'3':
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mode: i2c
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'5':
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mode: i2c
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'19':
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mode: spi
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'21':
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mode: spi
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'22':
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name: LDAC
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mode: output
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active: high
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'23':
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mode: spi
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'24':
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mode: spi
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'26':
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mode: spi
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i2c:
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'0x20':
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name: MCP23017
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device: MCP23017
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'0x68':
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name: DS1307
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device: DS1307
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-->
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#Expander Pi
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Expander Pi is a versatile digital and analogue expansion board. It allows you to connect your Raspberry Pi to switches, lights, sensors, and many other devices giving you a way to communicate with the outside world.
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##Features
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8 channel MCP3208 12-bit ADC with a maximum sample rate of 100 ksps and includes a 4.096 volt precision voltage reference.
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2 channel MCP4822 12-bit DAC with an internal voltage reference.
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16 digital I/O channels, using an MCP23017 16-bit I/O expander with a maximum input of 5 volts on each channel.
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A Real Time Clock using a DS1307 RTC and a CR2032 battery to maintain the date and time when the main system power is not available.
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Python, C, C++, Node.js and Windows 10 IOT libraries are available on GitHub.
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