This is V2 update of Atmega8 Volt-Ammeter. This new version features the following upgrades, Low power consumption Better Amperes display resolution while using low value drop resistor. Much smaller PCB […]
Yet another regulated power supply board
This is just a basic demo board of 78XX IC and LM317. LM 7805 and LM7812 are used here as 5V and 12V regulators. The supply for this board is […]
PCB update: Atmega8 Volt-Ammeter and USB AVR programmer
This is PCB update time. Few days ago I shared two projects made on veroboard. In these days, I have developed PCBs for those. Atmega8 based Voltmeter Ammeter for solar […]
Atmega8 based Voltmeter Ammeter for solar application
This project uses the ADC feature of a popular AVR, Atmega8. Atmega8 based Voltmeter Ammeter used Component List: 1x Atmega8- Programmed microcontroller 1x 1×16 LCD with Green Backlight 1x High quality […]
Simplest USB AVR programmer
I don’t have desktop with legacy ports and don’t like going to friend’s home every time I need to download something to an AVR. I asked myself “how can i […]
Introduction to Microcontrollers
Microcontrollers are such semiconductor devices that act like a computer and can run any hardware level program written into it. You can program an microcontroller to glow a LED whenever […]
Automatic quick turn on LED in dark
Earlier I’ve showed how to reuse waste mobile batteries for LED lighting. There was darkness detector part built upon a switching transistor and a LDR. Since the switching transistor was […]
Simple LM358 OP-AMP based USB Li-ion charger
UPDATE: https://www.circuitsdiy.com/usb-li-ion-charger-revision This is a simple li-ion charger without a dedicated li-ion charger IC. This circuit can be used to efficiently and intelligently charge any single cell Li-ion battery pack […]
Inverter circuit project - up to 500 Watt
This is a complete inverter circuit project which features automatic mains switching, automatic charging when mains is present, and automatically starts inverter when mains is off. Get the full size inverter […]
Simple Water level indicator circuit using Logic IC
This is a simple water level indicator circuit which can be used to indicate water at 3 stages EMPTY, LOW and FULL by three respsctive LEDs. The heart of this […]
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