Trandi made this simple DIY Servo tester based on ATTiny85:
I had to test a RC speed controller that I wanted to use to control an electric car window motor, and for the 100th time I was facing the same dilemma: find 8 batteries for my remote control, dismount the RX part from the quadcopter and use that, OR grab the Arduino and write quickly some code to generate the corresponding signals? Neither of which was actually particularly handy… So I finally decided to build a small stand alone servo tester.
DIY servo tester based on ATTiny85 - [Link]
The AVR Stick is a simple data logging device that instantiates itself as an HID keyboard and reports the voltages, along with a ‘timestamp,’ from two pins on an ATtiny85. The device uses open source firmware availabe from Objective Development (http://www.obdev.at/vusb/) called V-USB to implement the USB 1.1 standard. The code that runs the application was based on the EasyLogger example application from Objective development.
AVR Stick – A simple USB data logging device - [Link]
Tenty LED Brake Lights. Pete writes – [via]
I Purchased a motorcycle about two weeks ago. Interestingly, whenever I tell someone this news, they immediately proceed to tell me the most gruesome injuries and stomach turning plights that they or someone they know, has fallen victim to while motorcycling. In some cases, these raconteur’s briefly pause to look over their shoulder, presumably scanning for small children or otherwise offendable ears, before delivering the goriest details.
One commonality in these stories, aside from the macabre and arguably poor timing involved in telling them to me is that many accidents come down to a lack of visibility of motorcycles and their riders. Less than Argus-eyed motorists often pull out into the path of a motorcycle and with insufficient time for evasive action, that quickly an accident has occurred. Other times, drivers may focus on the car ahead of the motorcycle and in the event of stopping at a red light or similar, fail to leave enough room.
Tenty LED Brake Lights - [Link]
Christopher built an ATTiny85 development board. It has all the microcontroller pins broken out to a 2×4 dual row pinheader, a power indicator LED, and a reset button as well. [via]
DIY ATTiny85 Development Board - [Link]
Jonathan Thomson writes:
I made a device that charges my cell phone and plays an audio alert when it detects the phone is vibrating. I think this is useful for people who forget to take their phone off vibrate while it’s charging or the hard-of-hearing. It’s much louder than my cell phone’s speaker so it makes it easier to hear someone is calling even if the ringer is on. If this sort of device was more common people could leave their phone on vibrate almost all the time without worrying about missing a call.
Vibe2Tone – using an ATtiny85 available - [Link]
The Atmel ATTiny85 chip is an 8-pin MCU that is totally awesome. If you’ve been programming with the bigger boys (the ATMega series), these are a nice adventure – you’re rather limited in the number of output pins, but a creative design gives us a lot of flexibility in a very small package.
Apple-style LED pulsing using a $1.30 MCU – [Link]
Using an AVR as an RFID tag, Beth writes… [via]
Last time, I posted an ultra-simple “from scratch” RFID reader, which uses no application-specific components: just a Propeller microcontroller and a few passive components. This time, I tried the opposite: building an RFID tag using no application-specific parts.
Well, my solution is full of dirty tricks, but the results aren’t half bad. I used an Atmel AVR microcontroller (the ATtiny85) and a coil. That’s it. You can optionally add a couple of capacitors to improve performance with some types of coils, but with this method it’s possible to build a working RFID tag just by soldering a small inductor to an AVR chip
Using an AVR as an RFID tag - [Link]
I became interested in the ATtiny85 processor recently. Up till now, my projects were based on the ATmega328 or the ATmega644. The ATtiny85 is just that, tiny – only 8 pins vs. 28 on the ATmega328. The photo on the left shows the new X10 temperature transmitter, with the DS1621 temperature chip on the left and the ATtiny85 on the right.
X10 Remote Temperature – [Link]
This must be the smallest TV-B-Gone implementation, a device that can switch off almost any TV set. µTVBG is small enough to fit in your pocket and it is based on the ATTINY85 implementation by Lady Ada. All parts are SMT 0603 parts, the transistors are the good old BC850C and as IR diodes the author used the Osram SFH 4600.
uTVBG – World Smallest TV-B-Gone clone - [Link]