The all new analog input interface for the Raspberry Pi is here! The Pi-SPi-8AI is based on the popular VP-EC-8AI 8 channel 4-20 mA input module, and the Microchip MCP3208 12 bit A/D converter.
The 26 pin GPIO port is duplicated on either side of the module, so more modules can be "daisy chained" together.
There are three standard versions of analog inputs available:
PI-SPI-8AI-8MA:Inputs 1 thru 8 are 4-20 mA (Load Resistor 150 Ohms)
PI-SPI-8AI-4MA-4VDC: Inputs 1 thru 4 are 4-20 mA Input (load Resistor 150 Ohms)Inputs 5 thru 8 are 0 to 6.6 VDC Input
PI-SPI-8AI-TEMP :Inputs 1 thru 8 are 10K Thermistor Inputs for Temperature Sensor Applications
Each channel can be configured as either mA or Voltage. Another feature is all inputs can easily be configured for thermistor input making the Pi-SPi-8AI an 8 channel temperature sensor module.
Port Pins Used:
SPI-MOSI (GPIO10)SPI-MISO (GPIO9) SPI-SCK (GPIO11)CS_8AI (GPIO7)
Available in kit form (all SMD parts already installed) or fully assembled and factory tested.
Other input configurations are available, please contact us before ordering!
Sample Test Code in C
Sample Test Code in Python
The Pi-SPi Series of Products
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