This one is Great and Practical project. Outdoor robot power system is tended to be a gas engine based small power plant for mobile outdoor robots. It uses a car alternator shafted to Honda mini 4-stroke engine (GX35).

Power plant has some electronics that assures proper power generation:

• Alternator current/voltage regulator. Regulator allows to control(limit) field current with external resistors and even charge a battery with shut off feature if 14.5V is attained.
• Throttle controller. This part is based on SX28AC/SS parallax microcontroller which has to relate Engines throttle with output current. This system allows to control engines RPM so that battery weren’t overcharged and optimal power is provided.

Building such system requires some skills including mechanical, electronics and even programming MCU. Just remember this is an outdoor mobile power plant - do not try to use or test it indoors as it provides a CO gas exhaust that is poisonous.

Cats had been recognized as the most commonly pet in household.

According to the pet survey, cats and dogs are the top two favorite pets that mostly rear by peoples in their home. The reason why peoples love these two kinds of animals, is mainly related with the loyalty for their master (dogs) and the elegant and its always laid back behavior (cats)

Having cats with a pet or partner is a pleasure experience, as we can learn their daily life habits, behaviors, body languages and their socialization. However, some of the cat lovers facing many problems rearing cats and this can greatly become a great headache for them.

Some of the matters that currently turn into major problems to cat lovers:

• There always so stray cats that break in to your house, crunching and feast themselves with your cat’s food.
• Those neighbor cats always become annoying intruders and messing up your home.
• Hate of washing those “little gift” (The disgusting pooh or urine) left by the stray or neighbor cats.

From now on, you can waive goodbye to the above matters with “Pet Porte“.

I’m known you must be wondered, what is this “Pet Porte” is and how can you fully benefit from this “Pet Porte“.

Well, this Pet Porte is a brand new and high-end technology, which is an awesome selective cat flap that work as sensor. This sensor can consistently senses your cat with their in-build pet ID chip implants.

What’s that mean is your cat can now free itself from the traditional yet old-fashioned collars. The PetPorte works accurately by just reading the cat’s microchip cat flap. Read more »

This is a small programmable device (similar to PLC) with 4 inputs, 4 outputs and full development system running under Windows.

You can write and test a simple program, with debug feature, then store such program in the device non-volatile memory and then, every time device powers up, your application starts autonomously. Project archive contains schematic, printed circuit board, HEX file ready to be uploaded to microcontroller and application program that runs on PC (Windows environment).

You always expect some of the important emails in your email account, but the waiting process makes you become even more nervous?

Kill the nervous today with this stylish twinkle star ambient email notifier.

Those materials that needed are:

• 4d-micro-USB module
• RGB LED
• RS-232 port
• Picaxe 08M
• COM port
• Python script

Firstly, you need to use a 4d-micro-USB module to provide the power resource. The RGD LED will be controlled by the RS-232 port through the Picaxe 08M.

One of the cool feature about this ambient email notifier is you can control the colors and the brightness. How? It’s all can be done by sending execution code to the COM port. Read more »

I know - COM ports are quite obsolete, it is still used in many embedded projects. This one is a simple serially controlled I/O board with 29 lines that can be configured to control anything like from stepper motors, relays and other automation appliances.

The board constructed around z8 microcontroller which is quire rare in embedded projects. Despite of 29 I/O lines serial I/O board has some special features like programmable pulse generator, incremental encoder switch input, 3 counter registers, I/O port memory registers. Each I/O line is LED monitored. To make control easier there is a Visual Basic Program Template available where you can set up easy interface to access all board features.