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DIY vacuum gauge controller saves huge cash


DIY vacuum gauge controller saves huge cash

Arduino CrewNovember twenty second, 2022

Measuring vacuum works in the identical manner as measuring some other fuel strain, as a result of an ideal vacuum is unachievable and so it’s a measure of how near zero the air strain inside a container turns into. However typical strain gauges aren’t meant to measure pressures under ambient atmospheric strain (vacuums). That requires particular sensors and Superior Tinkering constructed his personal vacuum gauge controller to deal with them.

The vacuum sensors that Superior Tinkering bought have been designed to be used with a proprietary controller that prices hundreds of {dollars}. The sensors don’t simply ship an analog sign similar to strain stage (which might be very simple to learn), but in addition standing info. Even with that added complexity, the proprietary controller may be very costly for what it’s. Superior Tinkering accurately assumed that he may replicate its performance with inexpensive off-the-shelf {hardware}. The communication protocols for his sensors are well-defined in revealed paperwork, which made them a lot simpler to work with.

Superior Tinkering used an Arduino Nano board for this venture. It does have to learn analog indicators from every of the three sensors, so he paired the Arduino with an ADC (analog-to-digital) module and a multiplexer. Every vacuum sensor additionally obtained its personal devoted management button and OLED display screen, the latter of which shows standing messages and the strain studying from every sensor in millibars. The buttons let Superior Tinkering activate every sensor. All of these parts went inside a tidy 3D-printed enclosure that matches the aesthetic of devices like these. In complete, this venture value Superior Tinkering solely about 5% of what he would have spent on the business vacuum gauge controller. 

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