m-TENG

Helper scripts and shell for measuring Triboelectric Nanogenerator-based sensor output with a Keithley 2611B SMU or an Arduino

Features

Interactive (shell) mode

Live view
Press button to stop
Save and load settings (default interval, data directory...)
Easily run arbitrary command on device

Useful functions for scripts

Measure voltage and/or current
Transfer buffer from measurement device to host
Save/load as csv
Run lua script on Keithley SMU
Auto-filenames

Available backends

keithley

Use a Keithley 2611B Source-Measure-Unit via *pyvisa*. This backend allows measuring both voltage and current simultaneously.

arduino

Use a Bluetooth capable Arduino with [https://git.quintern.xyz/MatthiasQuintern/teng-arduino](this software on the arduino).
This backend only allows measuring voltage using an Arduinos analog input pin (0 - 3.3 V, 12 bit resolution).

testing

Use the shell without measuring TENG output. When starting a measurement, sample data will be generated.

Shell mode

It is recommended to run the shell with ipython:

ipython -i k_teng_interactive.py -- -*X*

Substitute X for -k for keithley backend, -a for arduino backend or -t for testing backend.

In the shell, run help() to get a list of available commands

Installation

Keithley

On linux: Install the udev rule in /etc/udev/rules.d/ and run sudo udevadm control --reload to force the usbtmc driver to be used with the Keithley SMU. The ATTRS{product_id} needs to match the id shown by lsusb.

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