In this circuit, the infrared emitter IRED1 is modulated by connecting its anode (A) to ~38kHz signal yielded by D9 of the Arduino Uno (TP1) while its cathode (K) to a ~1kHz signal available at D8 of ...

[Andrew Moser] has a method that lets you pull it off with an Arduino and an LM339 quad comparator. The circuit works by feeding a signal in from the Arduino. This waveform is affected by the LC ...

Arduino boards can most definitely help with ... digitalWrite() – Sends a HIGH or LOW signal to a digital pin, common for activating an output component. analogWrite() – Sends a value between ...

is used to synchronize the data exchange via a pulsing signal. Combined, they allow two devices to send and receive a message using bits of data. Some Arduino boards feature the I2C pins in ...

Arduino has taken the product “maker” world by storm and ... The digital nature of the DDS process results in an output signal and many signal images. The images follow a sin(x)/x envelope. This ...