Analog Link. It is also possible to read the amount of moisture present in the soil (for judging whether the soil is wet or dry) by linking the analog output (AO) of the module, to one analog input ...

A thermistor can be used to compensate for temperature variation in other components of an electronic circuit. Here is an Arduino experiment with a famed linear active thermistor chip MCP9700A from ...

The schematic-configured breadboard, comes with integrated analog and digital functions, variable power supply, and Arduino capability. Microaware’s Sandwizz, a schematic-configurable breadboard ...

To be fair, there are a few more bits too, including paper coated with pencil graphite and tin foil, which forms a variable resistor you can read with an Arduino analog input. You can see the ...

You’ll need additional modules (~$200 each) for digital and analog IO. On the other side, Raspi, Arduino and other toys have some IO onboard. But (I hope :) no one will ever use them for ...