ArticleHardwareX2025
OpenVac: An open-source low-cost fine vacuum sensor.
Article in HardwareX, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- OpenVac: An open-source low-cost fine vacuum sensor.HardwareX · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
When it comes to moisture- or air-sensitive chemicals, often the Schlenk technique is used to achieve safe and reliable results. In this article, we present an open-source and low-cost microcontroller-based alternative for vacuum sensors for this application. In Schlenk technique, the atmosphere in the reaction apparatus is replaced with an inert gas like argon or nitrogen. To do so, the apparatus first needs to be evacuated. To monitor the pressure level, vacuum sensors are used. Commercially available vacuum sensors typically are expensive and hard or even impossible to repair. Thus, we like to present our open-source and low-cost alternative, which uses a Pirani-type sensor and a Wheatstone bridge. The cross-voltage in this bridge circuit is amplified by an OpAmp and converted into a digital signal through a 12-bit ADC. The processing of this data is achieved through an ATtiny84, which also controls a 0.91-inch OLED display to show the current pressure. The device is battery powered and optimized for long runtime.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.