H-bridge circuit is a very useful in electrical motor controlling. You can drive a DC motor easily at both directions with H-bridge, and if you add some PWM to driver circuit you can even control the motor speed on both directions. There are very many simple H-bridge circuit designs in Internet. Nowadays there are many →
I saw some days ago a pointer to The ultimate low-cost dev board. Or at least looks pretty close to it. The shrimp is a very, very minimal Arduino-compatible circuit meant to control all the pins on an ATMega328. The components only cost about £1.40 ($2.25 USD) when bought in volume, making it perfect for →
MaKey MaKey is an interesting gadget that allows you to easily build your own touchpad keyboard to your PC. →
OpenPLC, for industrial automation to Halloween displays article factories have programmable logic controllers to take care of their automation tasks and they are also good devices to control your Halloween effects. open-plc project is an open hardware design to build your own programmable logic controller. Included in the OpenPLC are four 24V inputs, four 24V →
The microprocessor world seems to be going in ARM direction. And so seems to be microcontrollers. Cheap ARM based 32-bit micro-controllers are taking their place and trying to replace less powerful 8- and 16-bit micro-controllers. I wrote earlier that Arduino Goes ARM. It took quite bit of time for Arduino to take that step and →
PCBs without any substrate article tells that Kimio Kosaka is taking the concept of free-formed circuits to the next level with O’Baka Project No.7. Arduino Skeleton “0′baka Project” means a stupid project. This project is to make things which is not art and which is not usable. It’s a fully functioning Arduino board, without the →
Raspberry Pi and Arduino seems to be the most interesting small single board platforms at the moment for the hobbyists. It is a bit sad to see some people who are very passionate about the Arduino community coming down quite hard on the Raspberry Pi project as the Big Bad, suggesting that we’re trying to →
The Arduino Ethernet Shield connects your Arduino to the internet. Just plug Arduino Ethernet Shield module onto your Arduino board, connect it to your network with an RJ45 cable and follow a few simple instructions to start controlling your world through the internet. The original Arduino Ethernet Shield is based on the Wiznet W5100 ethernet →
Surprisingly Simple Arduino Motion-Sensing Project Makes For Some Weekend Fun article tells that Matt Williamson built a tiny, Arduino-based motion sensor that will SMS you when something moves by your desk or into a room. It’s completely open source and the notifications system runs on your PC thanks to a simple Python script. Why is →
If you have a simple Arduino project that uses only a few pins, you might be able to shrink it down to a single 8-pin ATtiny chip. How-To: Shrinkify Your Arduino Projects video and How-To: Shrinkify Your Arduino Projects article shows you how. The best part is you can use the same Arduino code and →