Solar Tracking System Featured Image

Solar Tracking System

This post is about designing a simple PIC microcontroller based Solar Tracking system. It requires some basic electronics skills and good motor coordination. This design uses 2 unipolar stepper motors and 4 IR-850nm LEDs as sensors to follow the sun  ...
7x5 Dot Matrix Character Generator Featured Image

7×5 Dot Matrix Character Generator

In this post a basic character generator design based on PIC16F88 will be demonstrated. 7x5 Dot Matrix Display was used and its pin out is shown in the schematic below. Instead of using PIC16F876/7 microcontrollers PIC16F88 was chosen for this purpose ...
Multiplexing-7-Segment-display-with-Raspberry-Pi-Featured-Image

Multiplexing 7-Segment Display with Raspberry Pi

When working with multiple 7-Segment displays a multiplexing scheme is required in order to simplify the design and save Raspberry Pi I/O pins. Such implementations shown in this design. As can be seen from a schematic diagram 2 7-Segment displays ...
Raspberry-Pi-3-Digit-LED-7-Segment-Countdown-Timer-Featured-Image

Raspberry Pi 3 Digit LED 7-Segment Countdown Timer

Multiplexing 7-Segment display scheme with Raspberry Pi as described here can be used as a basis for more complex projects. By adding 4x4 keypad matrix and replacing individual 7-Segment displays with a common anode 4 digit 7-Segments module a simple ...
Arduino-Base-Converter-with-4x4-Keypad-and-I2C-LCD-20X4-Featured-Image

Arduino Base Converter with 4×4 Keypad and I2C LCD

Arduino hexadecimal to binary Base Converter is a simple design that can be built using 4×4 Keypad and I2C LCD display module. Arduino MEGA board was chosen as a target device. This circuit will wait for a single digit to ...
Temperature Controlled Fan Featured Image

Temperature Controlled Fan

Here is another fan controller design based on PIC microcontroller, this time it's temperature controlled and can be used to monitor Hard Drive temperature and adjust the fan speed accordingly or as a case fan controller. This post following recently ...
Raspberry-Pi-Digital-Clock-with-16x2-LCD-Featured-Image

Raspberry Pi Digital Clock with 16×2 LCD

Raspberry Pi based Digital Clock with 16×2 LCD display is a relatively simple project.It requires only a small set of components and can be completed in less than an hour. Previously I’ve published similar designs based on other popular platforms ...
10 Bit 7-Segment Digital Voltmeter Featured Image

10Bit 7-Segment Digital Voltmeter 0-24V

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 ...
Digital Voltmeter VFD Display Featured Image

Digital Voltmeter VFD Display

This is a new revision of 10 bit Digital Voltmeter. For Arduino based voltmeter click here. Recently I’ve published a few voltmeter designs ranging from a simple LED display voltmeters with 8 bit of resolution to a more complex with 10bit ...
Making a siren using Arduino Featured Image

Making a siren using Arduino

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 ...