Low Cost – High Tech: The Digital Measurement System LabPi

Abstract

In diesem Beitrag wird das digitale Low‐Cost‐Messsystem LabPi vorgestellt, welches den Unterricht um vielfältige experimentelle Möglichkeiten erweitert und in allen MINT‐Fächern einsetzbar ist. Durch die Kombination von günstigen Einplatinencomputern mit präzisen Miniatursensoren und kostenloser Software kann eine Vielfalt an Messdaten erhoben, ausgewertet und mit der zugehörigen Internetplattform in Echtzeit verglichen werden. Die geringen Kosten pro Gerät ermöglichen zudem die Anschaffung von Klassensätzen; im Zusammenhang mit innovativen Lehr‐Lern‐Konzepten der MINT‐Bildung 4.0 bieten sich somit neue Möglichkeiten und Prüfungsformate für Schulen, Schülerlabore und auch die Hochschullehre.

Optimization of Critical Parameters for Carbodiimide Mediated Production of Highly Modified Chitosan

“…(Build instructions and printable SLT-data can be found in Supporting Information (SI) ) This approach enabled high reaction throughput and minimized differences in laboratory conditions within a set of reactions. For some sets, pH value was recorded over the full course of the reaction, using seven custom-made low-cost laboratory measurement devices (LabPi), each equipped with a temperature and pH-sensor [ 29 ]. Images of this setup and a typical reading during a reaction are shown in Supporting Information .…”

Chemiedidaktik

“…Ein Themenheft der NiU-C fasst digital gestütztes Visualisieren und Modellieren, kooperatives und individuelles Arbeiten sowie Experimentieren zusammen. Über Messwerterfassung sind unter anderem Arbeiten zu einem Low-cost-Selbstbaufotometer 24) sowie über die digitale Messstation Labpi 25) erschienen. Smartphones als Fotometriedetektoren 26) oder Wärmebildkameras für energetische Betrachtungen 27) sind Beispiele für die zahlreichen Entwicklungen bei der Digitalisierung.…”

Improvement of High-Throughput Experimentation Using Synthesis Robots by the Implementation of Tailor-Made Sensors

“…Consequently, the current study focusses on the implementation of a small, low-cost self-produced sensor into a synthesis robot enabling automated online characterization. Therefore, we used prior developed digital measuring system LabPi [ 13 , 14 ]. This system consists of a single-board computer (Raspberry Pi), a tailor-made adapter board, and various small and individually arrangeable sensor modules (e.g., temperature, pressure, pH value, gas sensor, conductivity, and a photometer).…”

“…This system consists of a single-board computer (Raspberry Pi), a tailor-made adapter board, and various small and individually arrangeable sensor modules (e.g., temperature, pressure, pH value, gas sensor, conductivity, and a photometer). The computer is connected to a touch display that can be utilized to operate the analytical software [ 13 , 14 ]. This system is applicable in, for instance, reaction optimization by in situ measurements of pH value and temperature [ 15 ], air-quality tests by measuring CO 2 concentration [ 16 ], hydrogen detection during photocatalytic water splitting [ 17 ], and general chemistry education [ 13 , 14 , 18 ], for which it was originally developed.…”

“…The computer is connected to a touch display that can be utilized to operate the analytical software [ 13 , 14 ]. This system is applicable in, for instance, reaction optimization by in situ measurements of pH value and temperature [ 15 ], air-quality tests by measuring CO 2 concentration [ 16 ], hydrogen detection during photocatalytic water splitting [ 17 ], and general chemistry education [ 13 , 14 , 18 ], for which it was originally developed.…”