Arduino programming and pcb Designing for Bluetooth commutation using BT24LT module

Need a device to communicate with Linux hand held device. Mode of communication is with Bluetooth. Need to send integer values. Required Keypad with customized values. upon pressing each button desired value to be send to the hand held device. My Experiences on this work: 1)Tried with All ble modules but only BT24LT is only connecting. 2) Tried using arduino to send values through BT24LT but Garbage values are populating. 3) Required correct suggestion to complete my project. Skills Required: Arduino coding. knowledge on PLC and IC's PCB Designing.