Circuit Splash

A Voltage Controlled Oscillator is an oscillator which produces oscillating signals (waveforms) with variable frequency. The frequency of this waveform is varied by varying the magnitude of the Input voltage.

Almost every electronic hobbyist must have faced a scenario where he or she must measure the frequency of signal generated by a clock or a counter or a timer. We can use oscilloscope to do the job, but not all of us can afford an oscilloscope. We can buy equipment for measuring the frequency but all these devices are costly and are not for everyone.

Bistable Multivibrator mode of 555 timer IC is the easiest mode of 555 timer IC, where Monostable multibrator mode has one stable & one unstable state, Astable multvibrator mode has both the unstable states, here in Bistable mode, both the states are stable

As the name suggest 555 timer is basically a “Timer”, which create a oscillating pulse. Means for some time output pin 3 is HIGH and for some time it remains LOW, that will create a oscillating output.

Power consumption is a critical issue for a device running continuously for a long time without being turned off. So to overcome this problem almost every controller comes with a sleep mode, which help developers to design electronic gadgets for optimal power consumption. Sleep mode puts the device in power saving mode by turning off the unused module.

HC-SR04 Ultrasonic sensor is a 4 pin module used in many applications where measuring distance or sensing objects are required. Check out this article to find more details about ultrasonic sensor like pinout, datasheet and technical specifications.

In this DIY project we make a Digital clock by multiplexing four- 7 segment displays using Arduino UNO and displaying the time in HH:MM format. This tutorial covers all the DIY instructions, circuit diagram and required code.

The DS3231 is a Precise Real Time Clock Module based on the AT24C32 IC. The module can provide information like date, day, week and time to a microcontroller through I2C communication. The DS3231 is a Precise Real Time Clock Module based on the AT24C32 IC. The module can provide information like date, day, week and time to a microcontroller through I2C communication.

A potential divider circuit is a very common circuit used in electronics where an input voltage has to be converted to another voltage less than it. This circuit is very useful for all analog circuits where variable voltages are required, hence it is important to understand how this circuit works and how to calculate the values of Resistors.