Circuits & Schematics Atmel

1. 30A AC soft starter (inrush current limiter)
   Hesam Moshiri
   Circuits Arduino Supply Microcontrollers Usage Atmel ATtiny13
   Are you tired of dealing with the damaging effects of inrush currents on your industrial devices? Look no further than an AC inrush current limiter (soft starter). Inrush current, also known as surge current, is the large amount of current that ...
   May 20, 2026
2. Infrared remote control decoder & switcher using Arduino
   Hesam Moshiri
   Circuits Arduino Wireless Atmel ATtiny85
   Story Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article, we learn to build a device that can decode (almost) any IR remote control and use the ...
   May 7, 2026

3. 5 A adjustable digital DC load
   Hesam Moshiri
   Circuits Arduino Measurement Supply Microcontrollers Usage Atmel ATmega328
   A DC load is an essential testing tool for any electronic enthusiast, especially for testing and repairing power supplies. An adjustable DC load can limit the current at any desired level, which makes it suitable to perform various tests because ...
   Feb 27, 2026
4. Microcontroller-controlled homemade Proto power supply for Arduino projects
   David Johnson-Davies
   Circuits Supply Microcontrollers Usage Atmel ATmega328
   This article describes a portable breadboard-friendly adjustable power supply, designed as an ideal supply for Arduino projects and other low-power circuits. It is capable of providing from 0 V to 5.5 V at up to 0.5 A, and is powered by two ...
   Sep 29, 2022
5. DIY Infrared Thermometer Pen
   xmorneau
   Circuits Measurement Printed Circuit Boards (PCB) Microcontrollers Usage Atmel ATmega328P
   Also called the ThermoPen, the goal of this project was to create a portable thermometer usable for precise uses case. More particularly, is was created to inspect overheating electronic parts on PCB and for general troubleshooting. At my school, ...
   Sep 13, 2021
6. Tiny microcontroller hosts dual DC/DC-boost converters
   Dhananjay Gadre
   Circuits Supply Microcontrollers Usage Atmel ATtiny13
   Batteries are the typical power sources for portable-system applications, and it is not unusual these days to find microcontroller-based portable systems. A variety of microcontrollers operates at low power-supply voltages, such as 1.8 V. Thus you ...
   Feb 15, 2019
7. Hybrid PWM/R2R DAC improves on both
   Circuits Microcontrollers Usage Atmel ATmega328
   Jim Brannan EDN Combining PWM with a small R-2R ladder improves both. It reduces PWM ripple significantly and increases the DAC’s resolution. In this Design Idea, an eight-resistor array and three output pins construct a modified R-2R ladder ...
   Dec 12, 2017
8. Read multiple switches using ADC
   Circuits Microcontrollers Usage Atmel ATMega168
   Les Hughson EDN The ATMega168 is a great general purpose 8-bit AVR microcontroller from Atmel . It has 23 GPIO pins, but sometimes (as I have found) you can run out of I/O pins as your design grows. This happened to me recently when, of the 23 GPIO ...
   Mar 10, 2016
9. AVR frequency meter - from 1Hz to 10MHz
   Circuits Measurement Microcontrollers Usage Atmel ATtiny2313
   Frequency meter with some of quite good performance, capable of measuring frequencies from 1Hz to 10MHz (9,999,999 Hz) with a resolution of 1 Hz over the entire range. Ideal for function generators or as a standalone meter. It is cheap and easy to ...
   May 17, 2013
10. AVR Atmega Fusebit Doctor (HVPP)
    Circuits Microcontrollers Usage Atmel Atmega8 Atmega16 Atmega32 Atmega64 Attiny2313
    Paweł Kisielewski The project is intended for noncommercial usage only Atmega fusebit doctor, as name says it, device for repairing dead Atmega family AVRs by writing wrong fusebits. Most common mistakes or problems are a wrong clock source (CKSEL ...
    Jun 2, 2010

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