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Posts Tagged ‘ATMEGA’

Process Automation: Relays and triacs

Wednesday, June 28th, 2017

Andy Brown designed and built this relays and triacs controller board that he could use to automate his homebrewing process: The heaters, fridge and fans that control the temperature in my brew fridge need to be switched on and off and that’s what this board is designed to achieve. As you...

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Posted in project logs | No Comments »

A high current power supply built around a server voltage regulator

Wednesday, January 25th, 2017

Andy Brown designed and built a power supply controller board for the Artesyn NXA66: I decided that the best way to exploit the results of the reverse engineering effort was to design a controller board that would host the NXA66 and expose its functionality via a front panel. I’d throw...

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Posted in power supply | No Comments »

Atmel releases new low power MCUs

Monday, December 8th, 2014

Atmel recently announced the release of their next generation of low power 8-bit MCUs. Promising to be pin compatible with previous ATmega family members, these "The Atmel mega168PB, mega88PB and mega48PB are available in 32-pin QFN and QFP packages with additional devices available later this year. All devices are sampling...

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Posted in AVR, dev boards | 7 Comments »

LCD clock version 2 – part II

Tuesday, June 3rd, 2014

Here's an update on Kevin Rye's LCD clock we covered previously.  Source files are available here, for direct download LCD-Clock-V2-Source.zip: Once all the components and headers were soldered in, I attached my Arduino and configured it as an ISP. I then burned the bootloader for an Arduino Uno. I then connected my FTDI...

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Posted in Arduino, clock | 4 Comments »

Sound pressure level meter (SPL) dB audio meter using AVR ATmega

Wednesday, February 19th, 2014

Davide Gironi  has written an article detailing a simple sound pressure level meter (SPL) dB audio meter using AVR ATmega: What is proposed here is a SPL db meter using and AVR Atmega micro. A sound level meter or sound meter is an instrument which measures sound pressure level. Sound pressure...

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Posted in AVR, measurement | No Comments »

MEGA MINI assembly, part II

Monday, January 27th, 2014

Kevin Rye posted an update on his MEGA MINI project: This was just supposed to be a proof of concept for the GPS clock; basically a trial run. However, it could very well be a finished project on its own. I could just put it in an enclosure and it would...

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Posted in Arduino | No Comments »

A DS1307 library for AVR Atmega

Wednesday, December 18th, 2013

Davide Gironi has posted a DS1307 library for AVR Atmega: The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar. This library set and get year, month, day, hour, minute and second from this RTC. Setup parameters are stored in file ds1307.h This library was developed on...

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Posted in AVR, library | 2 Comments »

Driving a DC motor using software PWM with AVR ATmega

Monday, November 25th, 2013

Davide Gironi writes: This library is an update of the software PWM driver you can find here. This update implements also progressive start / stop features. So, with this one, you can drive up to 4 motors independently controlling: speed, direction, slow start / stop

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Posted in AVR, library | No Comments »

A simple brushless sensorless motor driver for AVR Atmega

Wednesday, October 2nd, 2013

[embed]http://www.youtube.com/watch?v=bljcl14v8NQ[/embed] Davide Gironi posted the brushless sensorless version of his  sensored motor driver for AVR Atmega we posted previously: For this project, I've implemented a simple brushless sensoreless motor driver for AVR Atmega. The code i propose it's not perfect, and can be improved, but for the needs i had it works. The...

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Posted in AVR | 2 Comments »

A simple brushless sensored motor driver for AVR Atmega

Friday, September 20th, 2013

Davide Gironi has written an article  detailing his brushless sensored motor driver for AVR Atmega: For this project, I've implemented a simple brushless sensored motor driver for AVR Atmega. The code i propose it's not perfect, and can be improved, but for the needs i had it works. Using this library, the motor...

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Posted in AVR, sensors | No Comments »

AVR Atmega dehumidifier controller board update

Thursday, September 12th, 2013

Davide Gironi posted an update on his AVR Atmega dehumidifier controller board we covered previously: The main issue that i've fixed is the microcontroller crash, that happens sometimes. I've noticed that sometimes the controller stop running, crash or doesn't works as expected. After some experimets, i've noticed that probem was due...

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Posted in AVR | 1 Comment »

USBTiny-MkII SLIM programmer

Monday, May 27th, 2013

Here's a USBTiny-MkII SLIM programmer based on AT90USB162 microcontroller: USBTiny-MkII SLIM programmer (AVRISP-MKII clone) supports all Attiny, Atmega, and Xmega µcontrollers. It has three programming interfaces: ISP, PDI, and TPI. It works with AvrStudio or AvrDude. Small convenient board, contains double direction voltage translator for all interfaces and working from...

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Posted in AVR, programmers | 2 Comments »

DIY AVR Atmega dehumidifier controller board

Tuesday, April 16th, 2013

Davide Gironi documented his DIY AVR Atmega dehumidifier controller board build: Suddently my dehumidifier stop working, the original humidity switch get broken, it was a mechanical hygrometer, based on a thin transparent strip that react to humidity and engage the main electronic switch. So i decided to build my own...

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Posted in AVR, DIY | No Comments »

The EthNode – ATMega based Ethernet board

Friday, April 5th, 2013

Mark McKillen shared his EthNode – ATMega based Ethernet board in the forum: Taking inspiration from the good folks at Nanode and an Instructable I saw recently, I’ve come up with “another” AVR based Ethernet board that can be programmed and used like an Arduino. It’s a simple design based on...

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Posted in dev boards | 1 Comment »

App note: USB HID lithium-ion battery charging via USB with ATmega16/32U4

Saturday, March 2nd, 2013

This app note discusses how to use the Atmel® EVK527 evaluation kit to charge Lithium-Ion (Li-Ion) batteries using USB connection as power supply: This document (PDF!) describes an application running on the Atmel EVK527 evaluation kit. The EVK527 is dedicated to the Atmel ATmega16/32U4. The USB offers a 5V power...

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Posted in app notes | No Comments »

DimBlue – USB controllable 16 channel light dimmer

Monday, September 17th, 2012

Matseng designed DimBlue, an ATmega32u4 based USB controllable 16 channel light dimmer. Triacs which dim the lights are optoisolated from mains to provide protection from high voltages. The board is powered from mains voltage, via a PCB mounted transformer. As an added bonus, the board has a footprint for a...

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Posted in ARM, project logs | 1 Comment »

Digital light intensity meter with a calibrated LDR

Friday, January 20th, 2012

Shawon made a light intensity meter using an ATmega microcontroller to read a light-dependent-resistor and display the values on a 2X16 character display. To calibrate his LDR he used a digital light meter and a dimmable light source. This allowed him to plot the sensor output and properly calibrate his...

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Posted in DIY | 2 Comments »

Getting an ATmega to light up some LEDs

Wednesday, January 18th, 2012

Pete made an in depth tutorial on how to get started with ATmega microcontrollers. He covers how to read the datasheets and use them to write your firmware. Also covered are the initial stages of creating and programing a simple "blink LED" program in AVRstudio 5.1. In this Part 1...

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Posted in tutorials | No Comments »

DIY ATmega programing adapter using a IC testing clip

Saturday, December 31st, 2011

H used an IC testing clip to make a simple adapter for programing ATmega microcontrollers on the fly. IC test clips are tools used to grip ICs and provide easy connection to the pins. I’ve got a different use for it though. If you develop a circuit using an Atmega...

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Posted in DIY | No Comments »

ATmega fuse recovery board

Wednesday, December 21st, 2011

Mick built the ATmega fusebit doctor. It is a fuse recovery board for the ATmega family of microcontrollers. An ATmega8 uC uses the parallel programing method to reset the fuses for supported uCs. It is very easy to use. Just place your broken uC into a designated socket and press...

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Posted in AVR, project logs | 11 Comments »

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Recent Comments

  • Drone: So these go for around $330 USD and NO published calibration procedure online or otherwise? Given what's inside - I don't think I'll be considering...
  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...