microcontroller

I am making project using microcontroller. User will enter message through keyboard/ keypad which will be transferred via bluetooth to microcontroller. Microcontroller will display message on lcd. I need suggestions for the part: keyboard/ keypad-->bluetooth-->bluetooth beam...

Here is the board I am using, http://alphazeroelectronics.com/slimboard/index.htm I dont know how to connect a 12-24v dc solenoid to the output pins of the microcontroller. The output pins can only produce 3.3-5v so they say I need a relay or a transistor. What type of relay or transistor would...

Kindly provide me the details of components required and a clear procedure to do it...And also provide some websites if possible..please help me...thank you

i searched well for hours and still not getting it correct. help please. i saw the FBUS protocol description website. plz heklp me with other things

i want to recieve the sms to three phone numbers for the interupt given to the mc. can any body help me with the program ?.