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Build Your Very Own Low Resistance Meter with Arduino If you are a maker like me and looking for some interesting projects online, a milliohm meter is one easy and useful thing you can make. The basic principle of this circuit is based around a constant current source, which we have covered in one of our previous articles. A milliohm meter is a device that can be used to determine the values of small resistors, the resistance… |
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Measuring CO2 Concentration in Air using Arduino and MQ-135 Sensor The earth’s Atmospheric CO2 level is increasing day by day. The global average atmospheric carbon dioxide in 2019 was 409.8 parts per million and in October-2020 it is 411.29. Carbon dioxide is a key greenhouse gas and responsible for about three-quarters of emissions. So CO2 level monitoring has also started to gain importance. In our previous… |
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Interfacing Gravity Infrared CO2 Sensor with Arduino to Measure Carbon Dioxide in PPM The increasing concentration of carbon dioxide in the air has become a serious problem now. According to the NOAA report, the ozone CO2 concentration has reached 0.0385 percent (385 ppm) and it is the highest amount in 2.1 million years. This means that in one million particles of air, there are 385 particles of carbon dioxide. This rising level of CO2 has affected the… |
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Air Quality Analyzer using Arduino and Nova PM Sensor SDS011 to Measure PM2.5 and PM10 Air pollution is a major issue in many cities and the air quality index is getting worse every day. According to the World Health Organization report, more people are killed prematurely by the effects of hazardous particles presented in the air than from car accidents. According to the Environmental Protection Agency (EPA), indoor air can be 2 to 5 times more toxic than… |
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Interfacing Sharp GP2Y1014AU0F Sensor with Arduino to build Air Quality Analyser Air pollution is a major issue in many cities and the air quality index is getting worse every day. According to the World Health Organization report, more people are killed prematurely by the effects of hazardous particles presented in the air than from car accidents. According to the Environmental Protection Agency (EPA), indoor air can be 2 to 5 times more toxic than… |
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Gesture Controlled Contactless Elevator using APDS9960 Sensor In this time of the Corona pandemic, elevators have become a high-risk place where everybody touches the same buttons. At many places, people have discovered tricks to prevent contact with elevator buttons like using a pumping paper, toothpicks, or sanitary tissues for pressing the lift buttons. So in continuation of our previous Corona safety… |
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DIY Raspberry Pi LoRa HAT - LoRa Communication between Raspberry Pi and Arduino Raspberry Pi HAT is an add-on board for Raspberry Pi with the same dimensions as Pi. It can directly fit on the top of Raspberry Pi and doesn’t require any further connections. There are hundreds of Raspberry Pi HATs available in the market and we also built Raspberry Pi Hat for 16x2 LCD. In this session we are going to build a LoRa Hat for Raspberry Pi on PCB. This… |
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DIY GPS Speedometer using Arduino and OLED Speedometers are used to measure the travelling speed of a vehicle. We previously used the IR sensor and hall sensor to build Analog speedometer and digital speedometer respectively. Today we will use GPS to measure the speed of a moving vehicle. GPS speedometers are more accurate than standard speedometers because it can continuously locate the vehicle and can calculate the… |
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Interfacing SX1278 LoRa Module with ESP32 LoRa is a wireless Radio frequency technology introduced by a company called Semtech intended to be used to transmit bi-directional information to a long-distance without consuming much power. If you are new to LoRa, then learn about LoRa and LoRaWAN Technology and check LoRa interfacing with Arduino and Raspberry pi. In… |
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Smart Helmet with Nano OLED Heads Up Display for 100% Image Transparency and Crisp Colors EyeRide HUD is a revolutionary connection system for helmets launched by a French company, EyeLights. Created by ex-BMW and Airbus optics and photonics Ph.D. engineers, it is a patented all-in-one device with heads-up display (compatible with all types of motorcycle helmets), GPS, hands-free kit, and voice command (to keep your eyes on the road) and comes endowed with cool… |
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Generate a QR code using Arduino and display it on SSD1306 OLED The "Quick Response" code or abbreviated as QR code has become an essential part of our digital lives, chances are that you're already subconsciously familiar with them by now you've probably been roaming around your local grocery store, or maybe you are reading through your favourite book, or even possibly you are making an online payment with Google Pay, PhonePe or Paytm,… |
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Make a Non-Contact Infrared Thermometer with MLX90614 IR Temperature Sensor When debugging an electronics circuit or testing a new hardware design, often times I tend to check if the components on the board are getting hot abnormally by touching them. And if something is messed up (which usually is in the first try) these components could get as hot as 80°C or more burning not only the component but also my finger along with it. After burning my… |
