Simple digital clock with PIC16F628A and DS1307 and 7-segment LED display

A simple digital clock with PIC16F628A + DS1307: In this new project I am again using PIC16F628A microcontroller. The goal is simple digital clock with 7-segment LED display and the clock will have no additional functionality – no alarm, no seconds digits, no date. The latter can be added in the software though. For the […]

‘Magic tree’ project

Dilshan Jayakody has published a new build, a ‘Musical trees’: “Musical trees” is a part of creative arts installation and this project is capable to produce different audio tones by detecting human touch to its attached plants. Existing version of this driver is capable to monitor 8 plants and produce different sounds for each plant. […]

Arduino measures heart beat rate from fingertip

Raj of Embedded Lab writes: The PIC16F628A based heart rate meter is one of the most popular projects published on Embedded Lab. In this article, I am going to show how to replicate the same project using a simpler platform like Arduino. The Arduino heart rate meter will use Arduino Uno, Easy Pulse Plugin, and 4-digit […]

Audio oscillator with frequency counter

Xristost blogged about his DIY Audio oscillator with frequency counter project: After I finished the oscillator, I made some minor changes in the square signal part of the schematic. I connected five of the inverters in parallel with low value load resistors, thus reducing the influence of the parasitic capacitance of the PCB. The goal is […]

Optically controlled servo motor

Dilshan Jayakody  writes: This is demonstration project to control servo motor movement using physical marker and normal video camera. In this project video camera capture the movements of marker and calculate rotation angle based on that. This calculated rotation angle is feed to the servo through small MCU based interfacing unit. In this project video […]