meter

Blood Oxygen Heart Rate Meter

This instructables show how to use MAX30102, XIAO and a tiny display to build a blood oxygen and heart rate meter. Step 1: Sensor & Algorithm This project use Maxim Integrated MAX30102 Biosensor to detect pulse oximeter and heart rate. However, the official sample is not so accurate, so will use the MolecularD algorithm instead. Ref.: https://www.instructables.com/Pulse-Oximeter-With-… …

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SFM4300 – MASS FLOW METER FOR SENSITIVE GAS MIXTURE MEASUREMENT AT LOW FLOW RATES

The mass flow meter SFM4300 features improved sensitivity and precision, even for low flow rates. The small, compact sensor is calibrated for air, O2 and N2O gases and – in contrast to its predecessor, the mass flow meter SFM4100 – it can also be used to monitor gas mixing. With a zero-point accuracy of 0.005 slm for a total range of up …

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PHMETER – ARDUINO PH METER

pH meters are scientific instruments used for measuring the activity and concentration of hydrogen-ions in water-based solutions, with the aim of indicating its acidity or alkalinity expressed as pH values. They find application in water & wastewater treatment, pharmaceuticals, chemicals & petrochemicals, food & beverages, mining, and agricultural processes to mention a few. For today’s …

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U-BLOX’S LATEST METER-LEVEL POSITIONING TECHNOLOGY OFFERS ENHANCED GNSS PERFORMANCE

u-blox, a global provider of leading positioning and wireless communication technologies, has announced its new ultra-robust meter-level M9 global positioning technology platform, designed for demanding automotive, telematics, and UAV applications. Thanks to its high performance GNSS chip, UBX-M9140, the M9 technology platform and the NEO-M9N, the first module based on the platform, can receive signals from up …

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Visual Computer Stress Meter using an Arduino

Have you ever wanted to, without going out of your way to clock your processor, see how much stress your computer is under? With this project you will have a simple bar graph that constantly shows how much stress your computer is under. If the graph reads 0, your computer isn’t working too much. If …

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Arduino Audio Sound Level Meter

This is add-on of the audio amplifier project result which is introduced in other instructable. (https://www.instructables.com/PC-Speaker-Amplifier/) Usually many types of sound level meters are directly connected with input (or rarely output) signal lines of amplifier. But personally I’m thinking any electrical connections with amplifier circuit may surely degrade music playback quality by inserting some noises …

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