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ndroid 4.0 Mini PC MK802 RAM 512MB ROM 4G mini TV BoxAndroid 4.0 Mini PC MK802 Features:-This is the smallest Android TV player in the world,it looks like a USB flash drive, twice as big as a USB stick,but compared to a regular small Android TV box,the size is only 25%. You can attach it to the back of your TV, easy to hide. -It outputs the video to TV via HDMI, a short HDMI cable is included, it requires your TV to have a HDMI input. -It is powered by a USB cable, this USB cable is included, but you need to purchase a compatible USB adapter (5V,2A),we can also give it to you if you tell me which country you are from, we will know what kind of USB adapter you need. -It has a regular USB port, you can connect your USB mouse or keyboard here, you can also connect a 2.4GHz wireless mouse and keyboard dongle here,please be noted that mouse and keyboard are not included. -It also has a micro USB port which can be used to connected to your PC. You can use it to copy files from your PC to this little guy. -It also has a micro TF card slot, you can insert a micro TF card with up to 32GB of movie or pictures here. -It doesnt have an ethernet port, you need to use WIFI to connect it to the internet. -It also no RGB port,no S-video port, no built-in IR,no built-in bluetooth. Are you still not clear ?-Connect this (mini CPU) to a monitor and a mouse (Fly mouse or USB mouse). -Switch ON both monitor and this player. -You’re ready to run Android 4.0 OS. -No other thing is needed. -Yes! really. It’s a complete CPU. You can play most of the latest 3D and 2D games available in market. -Performance of this device is comparable with smartphones.Specifications of Android 4.0 Mini PC -OS: Android 4.0

-Main Chip: Allwinner A10/ 1.5 GHz Cortex-A8 -Memory: 1GB -Storage: 4GB -Graphical processor: 2D/ 3D/ OpenGL ES2.0(AMD Z430)/OpenVG1.1(AMD Z160) 27M Tri/sec -Network: Wireless 802.11b/g, WAPI(Ralink8188) -Expand Memory: Micro TF 2-32GB -IO/Ports: Micro 5pin USB/ USB2.0 data transfer/ OTG and host expand -Keyboard: Support virtual keyboard, support 2.4G wireless keyboard, fly mouse -Audio: AAC, AAC+, eAAC+, AMR-NB, AMR-WB, QCP, MP3, WMA, WAV, MIDI, M4A -Video: WMV/ASF/MP4/3GP/3G2M4V/AVI/MJPEG/RV10/DivX/VC-1/MPEG-2/MPEG-4/H.263/H.264/720P, 1080P, 720*480-Andriod APP: Youku,Tudou,QQ,Youtube,Twitter,AngryBird,Office,Gmail,Browse,Skype -HDMI: 1080P, 2160P  

The 620325 Stirling Engine by Thames and Kosmos uses renewable energy from the sun to drive a generator, which charges a rechargeable battery to power an electric car.

Power a Car with Solar Generated Electricity       Discover the Stirling engine, a simple, clean and efficient energy technology that is quickly becoming a viable source of electricity as the availability of fossil fuels declines. The Stirling engine in this kit uses renewable energy from the sun to drive a generator, which charges a rechargeable battery to power an electric car. Named after its inventor, Robert Stirling, the original Stirling engine dates back almost 200 years. Today, high-tech Stirling engines are being used in arrays of giant mirrored solar collectors and common applications like compact generators. NASA is even working on using Stirling engines to power a human outpost on the moon!Like a steam engine, a Stirling engine is a heat engine that converts heat energy into mechanical work, usually to drive a generator that then converts the mechanical energy into electricity. But instead of water and steam, the Stirling engine uses a permanently enclosed volume of gas, such as air or helium, to perform the mechanical work. Stirling engines are highly efficient, can operate very quietly, and can use many different sources of heat: combustion of fuels, nuclear fission, geothermal, or solar heat, as this model uses. The Stirling engine in this kit is located in acharging station with a mirrored parabolic dish. The dish focuses the sun’s rays onto the cylindrical glass bulb of the Stirling engine to heat it up. The air inside the bulb heats up and pushes a piston, which turns an electric generator. The generator produces electricity that charges a rechargeable battery in the car. The car runs on an electric motor powered by the battery.The kit includes the charging station with a beta type Stirling engine, the electric car, and a full-color, 64-page manual.

CrazyFlie flight video

The copter itself is organised around the main CPU. The job of this CPU is to acquire the physical measurement given by the gyroscopes and accelerometers and to control the motors to keep the copter stable. This is done by a regulation loop which controls the motors speed 250 times per second. The radio communication has a pretty low bandwidth and is used to send commands to the copter and receive telemetry data from it. The CPU program can be updated by radio.

The computer runs control and telemetry programs. The control program reads the input from a game-pad and sends control commands to the copter. We also have programs that can configure the copter regulation parameters and log the measurements in order to make easier to tune the regulation. All the development is done on Windows and Linux. Indeed we are 3 to work on this project, two of us work on Linux and one is mainly on Windows. Using FLOSS permit to handle that in a very effective way. We are mainly using the GCC compiler from CodeSourcery for the copter program compilation, GNU Make for the project build, Mercurial for the source control, and python/pyusb for the communication with the copter. All these softwares works seamlessly on both Linux and Windows and made the project pretty easy to handle. The distance between the motors (horizontally and vertically) is around 8 cm and the total weight is around 20 g.

The U49325 Sun Runner Stirling Engine is a solar-powered Stirling Engine which offers a dramatic demonstration of energy conversion.   This motor and its parabolic mirror can be attached to any conventional camera tripod. When properly aimed at the sun, the polished aluminum parabolic mirror focuses incoming solar energy on the heat cap of the engine, which is converted to rotary motion. Unit comes complete with motor, parabolic mirror, and wrenches. Standard camera tripod is not supplied. This engine is completely assembled and ready to run. Each unit is test run at the factory prior to shipping. Motor runs at 2,000 RPM and up. This engine can also run as a horizontal engine with an alcohol burner. Demonstrate this exciting method of harnessing the sun’s clean and renewable energy to your students.  Weight: 6.00 lbs Dimensions: Engine: 8.25 x 3 inches (L x W) Flywheel: 3.25 inchesParabolic Mirror: 18 inch diameterPlease note that this item is designed to demonstrate the operating principles of a Stirling engine for educational use and is not designed for power production.  It can potentially be coupled with a generator for producing very small amounts of electricity but is incapable of powering anything beyond a small light bulb or LED.