It is nice to see many building solutions over the Arduino base like this Prototino. Both hardware and software of Arduino are Extensible. This gives opportunity for New tools and Solutions over this compact system Framework.
One Idea can be an Arduino with a CPLD and Universal I/O driver for
robotics. This can come with a Visual IDE which is close or better than
the old Visual Basic 6 in usability.
An Youngster can just Drag Drop Components and Link them to build his
Robot or Home Automation Solution. Robotics Designers can have the
option of looking at the code/hex if needed.
The Prototino is an Arduino clone with a built in prototyping area.
Designed to make a permanent version of your project once you have
perfected it on a breadboard but without the expense of embedding your
original Arduino into your project.
The Prototino also makes your project more reliable and robust. With the prototyping area integrated into the board with the microprocessor, your project will have fewer boards and fewer wires, and because of that, fewer mistakes and fewer shorts.
SpikenzieLabs - Kits and Projects
6135 de Maisonneuve West, Suite 12, Montreal, QC H4A 2A3, Canada.
I sense the load current and control the duty cycle. The PWM pin on the AVR drives the gate of the FET through a couple of BJTs. Note the absence of any input capacitance; Vin looks terrible but it works. The micro power supply section is isolated with an RC.
delabs Notes This is a nice way to start, learn uC and Power electronics in one go. It does not matter if it an expensive solution for LED Lighting. It certainly is an excellent Educational Project.
It may also be useful to use Intelligent Systems (uC and Firmware) to monitor and manage LED Arrays and control their brightness and color. Large Arrays can be Interfaced to PC by XBee for Home/Office or Factory Lighting Automation and Energy Consumption Optimization.
uC Real World Interface uC I/O is Keyboard and LCD when you Build a calculator or a Text/Morse Communicator. When you control a motor it is Drive/Speed and Direction for Motor and Tacho or Opto Counters for Feedback. In both cases you have Input and Output which is Logic or Analog which has to reach the CPU.
Electronics experiments for children - "For children it is easier than for adults. Since it is enough, if someone applied sufficient time and a little tinkering with them. Often all it takes is a little push to arouse interest and skills."
Would you like to view the Relative Humidity RH or The Temperature of your Room, This project will enable you to get these values into the PC on the Serial Port or what you may know as the RS232 port. This project is designed by Peter H. Anderson.
A High humidity like 90% is seen after a Rainfall, A low Humidity like 25% means dry days. A humidity of around 50% is healthy, above that Bugs and Fungus trouble. Less that 40% cause skin and breathing irritations. 60% is comfortable for us and most equipment. High humidity can cause trouble to unprotected electronics.
This device has a serial interface, that means you could use a Serial to USB circuit and even interface with your tablet.
"This is an assembled unit which interfaces with a PC COM port and provides the capability of measuring the relative humidity and temperature using a Sensirion SHT-71 sensor. It includes an assembled printed circuit board, a 12 VDC wall power unit, and a six foot serial cable (DB9) . The unit interfaces with a COM port or similar at 9600 baud. (A USB to RS232 converter may be used)."