The ESP32 is low cost, low power, system on a chip. It can be connected directly with a WIFI modem or through Bluetooth. It has several pins that can be configured for both analog and digital inputs. It is perfect for bringing sensor data in from the physical world and uploading the data to the Internet. At Expert Coders we are experts at programming the ESP32. We can also build your cloud server to display your information over the Internet. If you prefer a desktop app to view your data, we can do that too. Finally, at a cost as to the time of this blog post of 2 for $15, you cant beat the price.