Yeah I have been looking to build a daughter board off of the 26-pin RPI header… But perhaps as you had mentioned previously my best bet is to build a custom IoT0 daughter board. My monitoring requirements are:
ADC x 3
Digital x 3
UART x 1
Send data to SD card
Since the IOT connector doesn’t have 3 ADC’s I’d have to use the SPI there with the MCP3004 (4 channel ADC). I would then use a connector to break out my signals to a phoenix style-connector on the outside of my enclosure.
If I skipped the MangOH board I could definitely just use the ADC connectors on the WP, however for the sake of speed it’s great to leverage what you guys have done so I can launch my first version of the product to my early adopters.