Generating sound patterns with Arduino is a topic of this article. All you need is Arduino compatible board a simple DC buzzer and current limiting resistor. In this project I'll show how to build a police siren using Arduino Mega ...

Arduino based LCD Bargraph Voltmeter can be easily assembled with Arduino Mega 2560/Arduino Uno or compatible boards. Arduino LED battery level indicator is here. Similar design based on Raspberry Pi platform is available at this link. This design is basically ...

In this post I’ll show you how a 12 bit DAC model MCP4725 can be connected and controlled by Arduino or a compatible board. Similar design based on Raspberry Pi platform can be found at this link . Wire.h and ...

This is an upgrade to recently published Simple Digital Voltmeter.Few improvements were done to hardware and software.DVM operating range  was slightly increased up to 24 V Max, however the most significant change is that the code now uses full 10 bit of ...

In this post a simple Digital Dual Voltmeter and Ampere meter design will be shown. It uses PIC16F876A microcontroller and 2x16 LCD display and has 2 input channels for measuring voltage in 0-25v range and current up to 500mA. The ...

Interfacing a Thermocouple with Arduino platform can be easily done by integrating a MAX31855 to your project. This IC is a Cold-Junction Compensated Analog to Digital Converter amplifier especially design for use with a Thermocouple. The converter provides 14-Bit of ...

Here is a Basic PIC Frequency Counter design. For Arduino version click here. It doesn't not attempt to compete with some advance designs and has a very limited frequency range, however it can be used as a starting point to ...

Solar power mobile charger can be built by tweaking digital power supply schematic. The Software/Hardware stayed almost the same as the original circuit.Current design has the same overcurrent protection and output voltage can be changed by pressing SW1. Voltage and Current ...

If you ever thought how fast you can react to external stimulus here is the circuit that can measure your response time. It measures the time it takes for you to press the push button in response to  turning the ...

In this post we’ll review a simple interface for PCF8574 I2C 8-bit IO expander IC and PIC microcontroller. For similar Arduino based implementation click this link. The format of present post is similar to 2 recently published tutorials about I2C ...