Hi Modifiers. :-)
Has anyone tried using a generic/chinese USB ADC to input tank data to Rasberry pi venus?
The Tank 140 interface uses USB so I guess it's possible. anyone know what ADC chip the Tank 140 uses?
I'm already using the spi pins for my tft display so can't go down the MCP3208 route that others have used.
My generator has an existing fuel gauge and sender so I'd like to import that data to Venus and eventually display it on the generator overview page.
You can have several SPI devices using different CS pins. You can even specify CS pin in the device tree config. On the ADC HAT I use for tank input I can choose between CE0 and CE1 (GPIO8/7), and there is an optional Soft SPI available on other pins. So SPI might still be possible.
If the "chinese USB ADC" adapter has a driver which makes it present itself as an iio adc device then it could just work. But chances are that you will have to write a driver to parse serial messages into something you can use, either as a iio adc driver, or directly to dbus.. If you want to go the USB route, why not simply get the Tank140 interface?
