There was a time when only the richest ham radio operators could have a radio with a panadapter. Back in the day, this was basically a spectrum analyzer that monitored a broad slice of the ...

Simple surface 2 channel RC transmitter. The hardware includes nRF24L01+ transceiver and ATmega328P processor with an OLED screen. The code is Arduino and contains only the necessary functions of ...

The development was done on an Arduino Due. Tests have shown that the working range of several 433Mhz receiver modules strongly depend on the quality of the power supply. When the Arduino Due is ...

Abstract: In this paper, we have determined the optimum pair of light-emitting diode (LED) semiangle and the receiver field-of-view (FOV) in the presence of human blockages for indoor visible light ...

Abstract: This paper presents the tracking system to monitor the location of the user during emergency situations. The work is implemented using GPS and GSM technology. The overall system involved an ...