This post is about building a simple LED controller circuit. Several articles were published on this subject. Here is just one link to similar design that can be useful. Search the site for more information. Current design relies on well-known technique to control output voltage by changing its duty cycle. Pulse Width Modulation is a common way … Read more
This article shows how to create a fading/dimming effect of the LED using PIC micro-controller. For similar design based on Arduino click this link.Controlling LED brightness using PWM is a relatively simple task and can be accomplished by configuring PIC16F877 CCP module to generate varying PWM output by slowly changing its duty cycle setting from … Read more
Here is another modification of a digital voltmeter. This time with 7 – Segment LED Display. These circuits seems to be more popular than other designs so I’ve decided to publish another variant. You can find 4 variations of digital voltmeter on this site under Projects –> Digital Voltmeter. For Arduino based LCD voltmeter click here. Present … Read more
Vacuum fluorescent display can be a good alternative to a Liquid-crystal displays in some applications. They have a number of advantages over LCD like extended temperature range and excellent contrast in high brightness environment. The main disadvantage is higher power consumption making them less attractive in battery operated devices. In this post I’ll show you how … Read more
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 and improved input stage. Bargraph voltmeter is available here. Current project incorporates a number of improvements … Read more