I am a professional electronic developer with 20 years experience and my expertise's are especially in System designing using Microcontrollers. I have a very good command on Microchip and ST ARM microcontrollers,In my projects have been implemented ethernet, usb, sd-mmc cards, rfid, rs232/485, canbus, bluetooth, Wi-Fi, gsm, gps, glcds,ac-dc-stepper-servo motors etc.