Install Remote desktop (to access the PI from your computer) : sudo apt-get update sudo apt-get Unless otherwise stated, all installation procedures are performed in the terminal. A correctly set up WLAN connection to the router or the Internet is also assumed. Lets assume you already have Raspbian installed on your Pi (there are many tutorials on how to install the basic operation system) and you have a display (via miniHDMI), mouse and keyboard connected. I am aware that there are surely better and more efficient solutions. Since I am not a Linux expert, no optimizations or similar were done. For me the instructions have led to the desired result. This setup guide is based on compiling several installation instructions from different sources (e-Ink display manufacturers.). The relais interrupts the forwarding of the power supply to the modem - the raspberry remains switched on. The Bandwidth monitor uses the power supply of the modem.In the IOT Portal you can also find a button to remotely reset the modem.In the overview you can also see the time history of the measured values and the reasons for the last resets.

The measured values are displayed on a Ubidots Dashboard (IOT Portal).A button on the front of the device is available to trigger the bandwidth measurement manually.The modem is thus reset without any modification of the device (only the power supply is interrupted). If the download speed falls below a defined threshold value, a relay switches the modem off and on for a short time.The time of the measurement is also shown.

The result of the bandwidth and ping measurement is shown on an e-ink display.

A command line version of is used as the basis for the measurements.

The Raspberry Pi Zero is connected via WLAN, tests up- and download speed and performs a ping measurement every half hour.