Csaba Bleuer has completed version 2 of his spinning LED display. Here is what version 1 of the spinning LED display looked like. "Improvements are: The rotation speed is 25/s instead of 7/s like in the earlier version, thanks to a cooling fan motor, which can give about 10W power and enough torque at 1800rpm. Also the power supplying is changed for the rotating part. It gets negative through
This is a very cool Automatic Cat Food Dispenser project. Who wouldn’t want to feed their cats automatically. The project could have stopped at about 10 percent of where it is at and still accomplished the goal of automatic feeding but that would be no fun. If the project is worth doing it is worth over doing, and this is exactly what happened here. Andres Leon built this automatic
If you live in a house that has more people than washrooms you have probably come across the situation where you are waiting for one to free up. Sven has come up with a solution, use a microcontroller to capture usage information and graph it so that you can see what the typical usage patten is like! Have a look at the recent graphs for some additional details. 🙂
Driving motors from a microcontroller will be required for a project eventually. This video by NerdKits will go over some of the basics that are needed. Thanks Humberto. "Electric motors are a key way of converting electrical power (voltage and current) into mechanical power (torque and speed), and because electric motors are simple and reliable machines, they can be found all over, in many different shapes and sizes. In
If you have some top secret into that needs to hide in plain sight have a look at this USB Cigar. When the cigar is together there is no sign that it has been hacked! "Materials: A thick cigar An USB flash disk of small dimensions Some wire, 2 x LEDs (red!), 1 x 10K resistor Wood primer Some tape A short USB extension cable Very thin paper, the
I need one of these robots to make me some coffee in the morning! Even though I a sure there was lots of prep prior to each mini scene this robot is actually very strong and flexible! Thanks for sending it in Alex.
When working with a microcontroller there are never enough pins to do the job. Sure you can move up to a hundred pin microcontroller and call it a day but you will have to pay a huge price for that chip, instead it is generally better to pass off the IO complexity to another chip. In this project Oscar uses the Micrel MM5450 is doing the heavy lifting when
