Arduino DIYs

We have heard of events/parties going out of control due to gate crashing by uninvited guests. Now, as a solution, imagine your door counting the number of invitees and raising an...

Handheld devices play an essential role in the healthcare industry. With the sensors becoming smaller and compact, making a handheld device is also becoming easier and affordable. Heart rate measurement systems,...

Normally, we keep the photographs we take in a photo album to view or show to our friends or family later. This Arduino album can display those digital photographs one by...

Sockets, boards and wires generally receive a limited supply of electric current. Any 'current overdraw' from them via thin wiring can result in a short circuit. Therefore, real-time power usage monitoring...

Low-current measurements are generally not reliable due to resolution of the measurement devices, which are mainly meant for measuring a current of a few hundreds of milliamps to a few amps....

Information about the total number of persons present inside a building such as a hospital, shopping mall, or factory helps provide crucial information to the security/safety personnel during emergency situations. This...

Wireless sensor node is a sensor node with a wireless transmitter. It has one or more sensing elements with amplifier and signal conditioning circuit or a digital/smart sensor, a microcontroller unit,...

When it comes to security, RFID card-based digital locks are more reliable than key-based mechanical locks since they cannot be easily broken also they are Contactless Lock. Therefore, some hotels across...

This LED desk lamp can be switched on or off from a distance using Bluetooth. You can even regulate the lamp’s brightness through a slider on the screen of your Android...

Total Dissolved Solids (TDS) is a measurement for detecting the potability of water. Both humans and aquatic creatures require a suitable level of water content to survive. TDS value > 1000...