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Overview Nowadays, learning about IoT devices operation and implementation is so essential due to the increasing use of IoT systems. In this tutorial, we are going to make a fingerprint attendance device with Arduino, which in addition to storing the logging information and working hours on the memory card, uploads this information on the Thingspeak platform as soon as it is connected to the Internet and You can download this information from the panel in various formats, such as CSV.https://electropeak...

E18-D80NK Infrared Obstacle Avoidance Sensor Features The E18-D80NK sensor is used to detect obstacles and objects. This sensor works based on transmitting infrared rays. First, the transmitter sends the rays in a direct path. This ray hits the obstacle and returns to the receiver. There is a potentiometer on this module that can be adjusted to change this detection distance from 3 to 80cm. In fact, with this sensor, the obstacle can be detected, but the distance cannot be calculated directly. There is also...