Thanks very much for the DS18B20 especially. A great Cayenne concept and example. This is a great key example of reading and plotting an input to a plot etc. The DS18B20 digital approach (-55 <> + 125 Deg C) seems to me to be the best method since messing with ADC converters seems a bit complex. As well multiplee DS18B20 to the same single GPIO pin 1w bus it seems a wayyyy cooler way to go ?
Last thing i might be able to help with a Tute ‘5’ is to crack myself next will be the Serial (Pyserial Readline) off the GPIO serial port from an HC-12 TTL transparent serial link radio module. I propose stripping the variables from a generic CSV serial radio data packet. A bit like this…
It is already looking like the HC-12 + Pi GPIO may be a match made in heaven
If someone wants to help be mix the working serial py CSV un-pack-ager / (split csv / tab, comma delimiter) into the DS18B20 Blob I will furnish the circuit.
Note: The Picaxe remote radio in the background is an example of typical student project: 3xAA for a year + of remote connectivity. "look mum no wires"
The HC-12 claims 1800m max but I have yet to confirm this…