The Akafugu LED Candle is an artificial candle that imitates the flickering of a real candle. Use it in place of a real tea candle: It will fit inside a tea candle casing or any holder made for tea candles.
- Randomly flickering LED: Imitates a candle
- Fits inside a tea candle casing
- Open Source Firmware (available at GitHub)
- Open Source Hardware: Eagle PCB design files available at GitHub
- On-board ISP header for upgrading firmware
LED Candle - [Link]
We’ve added a new sheet that covers most of the chips that were missing in the Atmel ATmega and ATTiny families, specifically the ones that come in only SMD packages. The chips included are ATtiny 4/5/9/10/20/40/24a/44/84a/43u/87 and 167. We’ve also added the ATmega8/48/88/268/328 in TQFP package which has a different pinout than the DIP package covered in the original reference sheet.
Microcontroller Reference Sheet SMD v1.0 - [Link]
The Atmel® SAM3 family of ARM® Cortex™-M3 Flash-based microcontrollers (MCU) is expanding with 40 new devices in the mix that provide more memory options and more connectivity. With this high-performance, highly integrated and power-efficient portfolio, you’ll find just the right devices to meet your unique design requirements.
A powerful new family of microcontrollers from Atmel with Cortex™ M3 cores (rev 2.0). The new microcontrollers are energy efficient and the supply voltages range from 1.62 to 3.6 V. They are designed to make circuit board layouts simpler and keep system costs low. The circuits have a broad selection of interfaces and support Atmel’s touch control system, QTouch.
SAM3N – (Entry point) Entry-level model to ARM Cortex M3 technology with a 3-layer bus (AHB), 10 DMA channels and clock frequencies up to 48 MHz. UART, SPI and I2C interfaces. Pin-to-pin compatible with the SAM7S and SAM3S series. Up to 79 I/Os, 48-/64-/100-pin packages.
SAM3S – (General purpose) Mid-range model with a 4-layer bus, 21 DMA channels and clock frequencies up to 64 MHz. Full-speed (FS) USB, high-speed SD/SDIO/MMC plus USART and SPI. Pin-to-pin compatible with SAM7S. Up to 79 I/Os, 48-/64-/100-pin packages.
SAM3U – (High-speed) Fast 100 Mbps microcontroller for more advanced applications with complex communications. 5-layer bus, 22 DMA channels and clock frequencies up to 96 MHz. 480 Mbps high-speed USB, high-speed SD/SDIO/MMC plus USART and SPI. Up to 96 I/Os, 100-/144-pin packages.
SAM3 family – NEW 32-bit ARM Microcontroller - [Link]
Over the years I’ve written a few fairly lengthy tutorials relating to AVRs. Originally, I posted these over on the AVRFreak’s Tutorials forums, but after many requests for PDF versions and after becomming frustrated at the lack of typesetting expressiveness given in the forum software, I converted over the text into LaTeX.
Now the tutorials are available in PDF form, and can be freely redistributed under an MIT license. I’ve even put up a public mirror of the tutorial LaTeX source SVN repository, so that others can fork off and examine past revisions of the files as I update them in the future.
AVR Articles - [Link]
The actual Arduino compiler is not able to compile correctly sketches that require data areas larger than 64kWord. This version is an important enhancement in respect of the one included in the Arduino IDE and offers many advantages: – supports all the 8bit ATMEL microcontrollers families; – overcame the 128kB limit and compiles correctly sketches up to 256kB; – includes best and newest libraries; – outputs a most compact and efficient compiled object code.
Arduino Full Memory: upgrade to the last ATMEL Toolchain version - [Link]
This application note summarizes the crystal basics, PCB layout considerations, and how to test a crystal in your application. A crystal selection guide shows recommended crystals tested by experts and found suitable for various oscillator modules in different Atmel AVR families. Test firmware and test reports from various crystal vendors are included.
Selecting and testing 32kHz crystal oscillators - [Link]
Flylogic is known for their skills in reverse engineering chips. They were familiar with Atmel smartcards AT90SC3232 and AT90SC3232C and assumed that the AT90SC3232CS was similar but with an extra IO pad. They discovered the AT90SC3232CS is a completely new design based on the larger AT90SC6464C device,
Get all the fascinating details on the exploration of this smartcard and images at Flylogic’s Analytical Blog.
Atmel AT90SC3232CS smartcard destruction - [Link]
The 2012 Atmel Robotics Contest (ARC) is currently underway. The contest is open to university students 18 years or older in North America, South America and Europe, and the goal is to develop a battery-powered 3D version of the Atmel robot ‘Mel’ (pictured above) using Arduino’s 4WD platform (for example, see Seeedstudio’s version) and Atmel components. Contestants can either work on their own or team up with other university students.
Deadline for submissions is May 18th, 2012. ARC contest rules are available in PDF from the contest webpage.
Atmel University Program Kicks Off 2012 Robotics Contest - [Link]
Pete made a nice tutorial on the fist steps of designing projects with AVR microcontrollers. He covers choosing the right uC for your project, finding datasheets, getting a programmer/debugger, and setting up the AVRStudio 5.1 for developing and debugging. [via]
In the wee hours of the night, I’ve been continuing to learn how to develop for the various AVR family chips from Atmel. I also do a lot with NETMF, Netduino, and the .NET Gadgeteer, but sometimes (despite the pain!) it feels good to code right on the metal.
Introductory/getting started information for the AVR family is not always the easiest to find, so this post covers a few other important details I think you’ll find helpful.
First steps in designing projects with AVR microcontrollers - [Link]