We are working on a low cost industrial logger that can communicate with Modbus and Control Logix (EthernetIP) devices. Our protype is built using an OrangePi Zero2, although it could work with most any Single Board Computer like the Raspberry Pi.
This devices is designed for ease of use. The red button turns the WIFI on and shows a QR code to connect to the devices built in WIFI access point. Pressing the red button again will show a different QR Code that will launch the Flutter Web app that acts as the primary way of interacting with it.
The Flutter app uses MQTT to communicate with the logger and provide real-time updates.