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 […]
Category Archives: AVR
PlayStation 2 controller connected over a RFM12 wireless module
Dustin connected his PlayStation 2 to a PC wirelessly using two RFM12 modules to make the link. On both sides AVRs with Arduino bootloaders drive the wireless modules. All the source code for this project is available.
ATmega32u4 breakout board+
Here’s a small breakout board for the ATmega32U4. A power supply, decoupling caps, button, USB jack, and an AVR programing header are populated on the board. As an added feature an open source bootloader that works with AVRDUDE is pre-programed. We like the AVR 8-bit family and were excited to see Atmel upgrade the series […]
Nomis: Simon game clone on ATTiny85
Christopher Woodall from HappyRobotLabs wrote in about his recent project, Nomis, a Simon clone made using an ATTiny85. It uses up 4 pins, 3 for LEDs and 1 for buttons (ADC input). The write up can be found here. Everything is completely open source (except for the EAGLE CAD limitations of course, which kind of […]
AVR transistor tester build
Alan Garfield at fromorbit writes: Hey guys, I built up that AVR Transistor Tester that’s been bouncing around on your site for a few weeks. Thought you might like to see it. I’ve done this short video showing it in operation and also written up a few of the misadventures I had while building it. […]
ATmega fuse recovery board
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 the button. Via the forum.
ATtiny13 controlled LED Christmas lights
A simple example of a Christmas light project using store bought LED lights and components you probably have lying around the shop. Mark VandeWettering found a set of battery powered LED Christmas lights and decided to combine this this an ATtiny13 to make an MCU controlled lighting display. He explains: I found a set of […]
FRISK USBTiny MkII AVR programmer
Yoshi built a USBTiny MkII SLIM clone that fits into a Frisk candy case. It’s a USB AVR programmer that supports ATmega, ATtiny, and ATxmega families of microcontrollers. His project is open source and all the design files are available on his site.
Microcontrollers for newbies
If you’re at that stage as a beginner where you wonder what’s going on behind the scenes on an Arduino board you should check out jumperone’s tutorial on using microcontrollers. There you’ll learn what’s needed to take a bare microcontroller and load your own program onto it. Both PIC and Atmel chips are covered, with […]
Logic Sniffer: RC transmitter module design debug
pppd created a removable RC transmitter module based on ATtiny25 with the Logic Sniffer. Annoyed by an uncomfortable RC transmitter design and its stick mode, pppd decided to build a removable RC transmitter. It works by converting the standard RC PPM into the IR signal used by the toy. But first he needed to reverse engineer the original using the […]
ATtiny2313 based servo tester
Ejberg.dk has developed this project for a simple ATtiny2313 based servo tester. This device lets you test servos by varying the pulse width between limits of 0.8000 ms and 2.2000 ms selectable through the use of four buttons. While the schematic shows an Atmel AT90S2313, the circuit will work with the popular ATtiny2313 using version […]
Atmel and Arduino Collaborate on AVR and ARM-based Development Platforms
Atmel and Arduino have announced a cooperative effort to produce three new AVR and ARM-based dev platforms debuting at the Atmel-sponsored Arduino Pavilion at Maker Faire located in Queens, New York, September 17 and 18, 2011. According to Atmel’s press release: Atmel and Arduino will be demonstrating several platforms in the Atmel-sponsored Arduino Pavilion including: […]
Atmel AVR Dragon vs the Kraken
Null Space Labs was tired of fighting the Dragon Atmel AVR debugger, so they make made their own programmer called the Kraken: The dragon is a terrible piece of hardware when it doesn’t work right, which is often. It has a design flaw that causes a couple of chips to blow up regularly, so regularly […]
Tellymate makes serial to video easy
The UK based crew from Batsocks develops and sells open source kits including breadboard related projects. We found a project they call the Tellymate which looks like a simple and easy way to provide plug-in video text output to any MCU project using just an ATmega8 and a handful of passive components. TellyMate is a […]
SimulAVR
SimulAVR is an open source simulator for AVR 8-bit Attiny and ATmega microcontrollers. SimulAVR can be used either standalone or as a remote target for avr-gdb. When used in gdbserver mode, the simulator is used as a back-end so that avr-gdb can be used as a source level debugger for AVR programs. The core of […]
Add auto turn-off to a cheap multimeter
Florin was tired of wasting batteries every time he forgot to turn off his multimeter. He hacked together an auto-shutdown: I bought this multimeter(Minipa ET-870C) a while ago for $17, great value. I got it because its nice to have around multiple meters for when you wanna measure both input and output voltage/current. I believe […]
Pong on an Atmel 8535
Eric Milkie and Jomar Ochoco from Cornell present their EE course’s final project, Pong on an Atmel 8535. For our EE 476 final project, we wanted to make something that would be fun and also allow us to use many of the different embedded control techniques we have learned throughout the semester. We thought a […]
Reminder: Protostack ATmega168A kit giveaway
Tomorrow we’ll announce the winner of the Protostack ATmega168A development board and USBasp programmer. Leave a comment on yesterday’s post for a change to win the board. Get the Protostack ATmega168A kit for $19.80, and the USBasp programmer for $16.
Protostack ATmega168A kit + USBasp programmer giveaway
Protostack gave us an ATmega168A development board and USBasp programmer to give away. This is the latest version of the AVR through-hole development board, it has with a flexible power supply and huge prototyping area. We’ve watched the Protostack board evolve over several years, and it just keeps getting more refined. The introductory tutorials are […]
Arduino driving CGA display
András Veres-Szentkirályi found an old CGA monitor and wondered whether it could be repurposed for use with an Arduino. He noted that CGA monitors use inexpensive DB-9 connectors, the signals are TTL (0-5V digital), the clocks are in the range of cheap microcontrollers (HSYNC is 15,75 kHz, VSYNC is 60 Hz), and yet 640 by […]