Soil Moisture Sensor
Build a simple soil moisture threshold detector with a PCB fork sensor, an LM393 comparator, and a relay output for visual and local control.
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ECG display with Arduino
This ECG (electrocardiogram) unit has an integrated 2.8 “display. The latter can show individual heartbeats in two different formats and a Poincaré texture. It is battery powered and can be worn around the neck on a lanyard. The device is based on an Arduino Nano, which receives data from ECG sensors and displays them on…
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Wearable Projection
The idea of this project has been on my mind for a while. The question of what if we can use our environment as a technology canvas motivates me to start experiment with this project. Luckily today we have an amazing device such as Raspberry Pi to use as a brain of the system….
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DIY pressure seat sensor for Arduino
You know the pressure sensors placed inside the car seats that remind you to fasten your seat belt? The professor Michele Maffucci has decided to exploit this principle in order to create a system that measures the sedentary lifestyle of people sitting at the desk, but with a DIY pressure sensor and a PIR sensor….
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Turn Any Decorative Thing Into IoT Device
In this project, we will see how to turn any decorative object into an IOT smart device. Specifically, a plant pot was chosen and it was transformed into a device that sends movement notifications. The heart of the project is an ESP-01 WiFi module for wireless communication and a PIR sensor to detect movement. An…
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Hoverboard Power Monitor based on Arduino Nano
The aim of the project is to measure the energy consumption of the hoverboard during different driving situations. For this reason, Niklas Roy decided to develop a power meter similar to the car’s on-board computer. Roy’s handheld device is controlled by an Arduino Nano and utilizes a Hall effect current sensor. The measurements are shown as…
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Grove Sensor Tester – Get Sensor Value in Seconds – Arduino
Testing the sensor is the very first step when we start to build a new Arduino interactive project using sensors. If you are a fans of open source hardware, you may have dozens of sensors in your drawer, and everytime you want to make use of them, you need to test them one by…
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UltrasonicEyes
I wanted to make a quirky project using some 8×8 matrix LEDs and some ultrasonic sensors… something different from what other people usually make with ultrasonics – and I wanted it to be fun and playful. So I created what I call UltrasonicEyes – a fun project that you sit somewhere near where people move around…
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Trill sensors bring beautiful touch interaction to digital projects
From computer interfaces to textiles, musical instruments to interactive artworks, we experience the world by touching it. Getting touch right in the design of objects and products is essential – this is where the Trill sensors come in. The Trill sensors use capacitive sensing to precisely track finger movements, making it quick and easy to…
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PRESSURE AND TEMPERATURE SENSOR
A small jewel capable of detecting atmospheric pressure and temperature, designed for the construction of weather stations or applications where it is important to know these parameters, such as air mass meters and altimeters. Let’s try it with Arduino. We know Omron for the many industrial sensors it has produced and continues to…
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LPS35HW Water Resistant Pressure Sensor Now Available on Adafruit
The ST LPS35HW is a water resistant barometric pressure and temperature sensor that is also safe to use in wet environments. In fact it combines protection from water intrusion with support for high precision relative and absolute measurements, and drivers are available for CircuitPython, Arduino, and Raspberry Pi, and support for I2C or SPI (Arduino…
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How to make earthquake alarm
Let’s test the D7S by Omron, the world’s smallest seismic transducer, and create a seismograph capable of a sensitivity and an accuracy that are comparable to the ones found in professional tools. Each day, thousands of earthquakes occur on our planet, but most of them cannot be perceived by the population (as they…
