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Raspberry Pi and I2C based solar energy logging system

Interfacing various I2C devices via a custom addon PCB to Raspberry Pi

ADC conversion using a pair of MCP3428 16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference by Microchip which have 4 input channels. Board also has a buffer to allow 5V I2C sensors to work with the 3.3V levels on the Raspberry Pi board.

Blog post on has photos of the prototype board.

Update 24th July 2012 Added final python script to save data from I2C sensors and 1-Wire sensors and send to web server every minute.

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