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The initial step often taken when learning about any microcontroller or embedded system is to make an LED blink. The circuit presented below illustrates the setup for interfacing an LED. Note: Due to the large dimensions of the circuit...
Utilize the Maxim MAX292 switched-capacitor filter integrated circuit to convert a square wave into a sine wave. The operational frequency range of the circuit spans from 5.2282 Hz to 8928.6 Hz when the microcontroller is functioning at a 16-MHz...
An obstacle-avoiding robot is an intelligent device that can automatically sense and navigate around obstacles in its path. It is designed without a microcontroller to simplify the circuitry and programming requirements. Understanding the circuit diagram is essential for constructing...
The Maxim MAX 6665 provides a complete temperature-dependent fan controller. It can switch fans operating at voltages of up to 24 V and currents of up to 250 mA. The IC is available from the manufacturer in versions with...
Controlling a relay with an STM32 microcontroller involves using a 4N33 opto-isolator for electrical isolation. The relay coil requires approximately 250 mA, necessitating the use of an MPS222 transistor for switching. The GPIO configuration inverts the logic when used...
This circuit was built to stabilize a radio frequency VFO (Variable Frequency Oscillator) for ham radio applications. The circuit has also been used to lower the drift of a Ramsey FM10a micropower FM transmitter. More: The 7805 voltage regulator...
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