Cooking is all about temperature control: too cold isn’t good enough, and too hot can ruin everything. To aid in this regard, ...

As I've experimented and played with a lot of different sensors, I've discovered that these basic devices can be built for ...

There must be no chemical reaction between the sensor material and the sample. Use a sensor with a low cell constant (0.01 to 0.1 cm-1) for low conductivity measurements and a sensor with a higher ...

Arduino Code for Speed Sensor In general, the following code makes Arduino to measure the speed of the moving object using two IR sensors and display the object speed in the I2C 16x2 LCD display. When ...

Arduino Motion Sensor – Circuit and Working The circuit diagram of the automation device using a motion sensor is shown in Fig. 2. It consists of an Arduino Nano board (MOD1), a PIR sensor (S1), a ...

NTE30116 Tinted Blue 5mm Infrared LED Emitter (940nm) SM0038 Photo Module for PCM Remote Control System (38kHz) The principle of this setup is somewhat simple and self-explanatory. In this circuit, ...

If your Arduino has a built-in WiFi or Bluetooth chip, such as ESP8266, it may have a separate LED that starts blinking as soon as you plug in the Arduino. Some Arduinos have two onboard power LEDs.

Fig. 1: Author’s prototype Fig. 2: Block diagram of motion sensor alarm Circuit and working The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1), ...