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-… …
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 …
SFM4300 – MASS FLOW METER FOR SENSITIVE GAS MIXTURE MEASUREMENT AT LOW FLOW RATES Read More »
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 …
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 …
U-BLOX’S LATEST METER-LEVEL POSITIONING TECHNOLOGY OFFERS ENHANCED GNSS PERFORMANCE Read More »
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 …
Simple project to check the air quality in your house. Since we stay/work from home a lot lately, it might be a good idea to monitor the quality of the air and remind yourself when it’s time to open the window and get some fresh air in. Step 1: Parts and Tools Parts BME680 CJMCU …
Harsh new rules at work getting you down? Overtime sucking the life out of you? Or maybe things are great, either way now you can show your co-workers and management exactly how you feel about your job without a single meeting, memo, or team bonding exercise. This is the Quality of Life Meter. Boss take …
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 …
Kinetic projectiles are a seldom-used weapon of war, consisting of heavy metal slugs dropped from a great height by aircraft. On the way down to the ground, they pick up enough speed to kill enemy troops and even penetrate light armor. [i did a thing] tried to replicate this simple technology using a consumer drone. The …
Suppose your mood changes so fast that people can’t cope up with it. You feel sad but people do something that makes you more sad. If only they knew what you are feeling right now!Behold, I present you the Wireless Mood Swing Meter!! Place it where everyone can see it, tap on your phone and …
There are plenty of designs for table-top 3D printers, engravers, and general CNC machines out there. However, if you wanna build big things and build them fast, sometimes you need a machine that can handle bigger jobs. This gigantic 1x1x1 m 5-axis CNC machine from [Brian Brocken] absolutely fits the bill. The build relies on 3D-printed …
Looking for a digital recreation of the classic analog volume unit (VU) meter? If you’ve got an Arduino, a few passive components, and a SSD1306 OLED, then [mircemk] might have the answer for you. As you can see in the video below, his code turns a handful of cheap parts into an attractive and functional audio …
ANALOG STYLE VU METER WITH ARDUINO AND OLED DISPLAY Read More »
