Circuit Lake

Electronic Project and Circuit Collection

AtMega48 Related Resources


Lead-Acid Battery Tester, Desulfator & Charger

April 01, 2013 By: admin Category: AVR, Power Supply, Tools No Comments →

Batery tester and charger

Da Pimp is ATmega48-based portable Lead-acid battery tester, desulfator & charger designed by Mikey Sklar. It uses capacitors instead of a transformer for efficient conversion of AC to DC voltages. With input 120VAC, it will deliver 0.5A constant current output and dynamic voltage 1VDC – 100VDC. While 220VAC input will increase its current output to […]

Open Source AVR Temperature Controller

August 13, 2012 By: admin Category: AVR, Control, Microcontroller, Project No Comments →

AVR Temperature Controller

The open source project allows you to control DC appliances based on the temperature of two thermistor inputs. It uses AVR ATmega48 as main processor. The controller has both green and white LEDs to indicate status. The project output is connected to N-Channel MOSFET, AOD444, for switching with current up to 4A. For higher current […]


5 Channel USB Analog Sensor with AVR ATmega48

July 19, 2012 By: admin Category: AVR, Data Acquisition, Interfacing, USB No Comments →

USB Analog Sensor with AVR

This project demonstrates how to build a simple module to read analog sensor and send the data to PC using USB connection. The project uses ATmega48 as main processor and USB FTDI serial-to-usb cable. Simply put header pins on your device which you can plug into providing the microcontroller-computer link. No need for soldering surface-mount […]

Simple Automatic Battery Discharge Analyzer

October 29, 2011 By: admin Category: AVR, Data Acquisition, Microcontroller, Monitoring, Project No Comments →

Junk Battery Discharge Analyzer

The project allows you to analyze characteristics of unknown/junk battery especially the capacity and variation of the voltage on discharge. It is controlled with a PC via a serial port. No external power supply is required because it is powered by RS-232C signals. It uses ATmega48 as main controller for dummy load and constant current […]