We’re living in the 21^st century, where the E-mail and Twitter have become a part of our daily life. Believe it or not, some of the people couldn’t live without the E-mail and Twitter, as they have to depend on these tools to keep in touch with other all the time!

If you’re one of them, then the atTiny45 USB LED E-mail, Twitter and Pidgin Notifier is the perfect device for you.

The project is a very interesting yet innovative task, as it only requires a little modification. For building the LED notifier, you’ll need these components, which as:

1. An Atmel atTiny45 microprocessor

2. A 5mm RGB LED

3. Two diodes (It’s better use the MK96 5B410 diodes)

4. Five 68R 1/4w resistors

5. A 1.8K 1/4w resistor

Ok, first thing first, you must build a prototype to try out the LED notifier. In this case, stripboard is a very good choice, as it has the correct width to be shaped and inserted into the USB port.

After that, you have to test the LED and discover if there any difficulty or downfall that need to be solved. For overcoming the problem, you can soak a tissue in superglue and covering the LED lenses properly. The LEDs will then become brighter than before!

You’re a very humor person and you love to do something different to cheer someone up from the boring life? If you did, then this Electronic Whoopie Cushion Duex would be the excellent choice!

Basically, it’s a device that built in a rubber bag with an opening on one end. The opening is working as a valve, which is allowing the air to be flowed into the bag, but restricted flow out of the bag. Normally, the bag is placed under a seat or between the cushion of a sofa.

When a person is sitting on the chair, air is being forced out of the bag through the opening. The above mechanism will cause the bag to emit an embarrassing noise (It sounds like the person is farting).

It isn’t hard to develop this fun stuff, all you need here is an MC33794 e-field sensor IC and a specially designed seat cushion sensor. Furthermore, you’ll need an MC68HC908QY4 microcontroller, as it helps you to sense when someone sits down or gets up from the sofa/chair!

Honestly, this Electronic Whoopie Cushion Deux will be able to create the best prank, no matter at your office or home!

Guys, if you’re a regular visitor, then you might have probably read the previous article before, which is talking about on how to synchronizing Firefly!

Today, we’re going to double up, triple up or multiple the ordinary monotonous synchronizing firefly project into the 64 Synchronizing Fireflies (Yeah, sounds like a very challenging project, isn’t it?)

In the previous synchronizing firefly project, a ping-pong ball is used as a diffuser. This time, we need 64 ping-pong balls and transform it into a huge Synchronizing Fireflies field!

64 Fireflies Part II from tinkerlog on Vimeo.

Look on the above video clip; you noticed that every firefly acts completely autonomous. An Attiny13 controls each of the fireflies independently. The reasons why they’re connected together are mainly for power supply only!

You’re wondering, “Why I should use the Attiny13, instead there are many other Attiny version out there?” Well, it’s because the Attiny13 is perfect enough to act as the phototransistor’s reader and lights up an RGB led.

Technically, these synchronizing fireflies are well-programmed to blink in a certain rate. However, once it detected other blinks, it starting to blink faster. You will soon discover that the fireflies are beginning to blink in unison, after a few cycles!

Clock is one of the common electronic gadgets in every household. Honestly, would you ever figure out the life without the existing of clock? Yep, it must be very horrible, isn’t it?

Well, if you want to own a stylish clock, but you’re not decide to buy it from the marketplace, maybe this cool Radio Controlled Clock with Large-sized Display can be a good assistant here.

Let’s go through the project. First thing first, the charged part of this Radio Controlled Clock is comprised with a display circuit, which is making it easy to see using the large-sized 7 segment LED. In addition, an LED matrix is being used for the display of a day of the week.

The even more interesting part is the display is included with a Japanese character (Kanji), which is indicating the seven days in a week!

The PIC16F877 is applied in this project, as it has 40 pins. Latch registers are used to maintain time information for the display. Well, you can make a circuit compact, by included D-FF of the 7-bit x16 circuits on two CPLDs (XC9572-84).

Meanwhile, the PIC16F628 is needed for the circuit to displays a day of the week by the Kanji in the LED matrix. Beside that, PIC16F628 also responsible for suppressing the consumption electric power of the LED too!