i have developed a project using my adruino uno rev3 , i want to get rid of using the whole adruino uno and make a simple circuit on bread board which has atmega 328p . BUT i have ungraded my 16u2 ic with keyboard.hex file as adruino uno don't have HID keyboard support .at present everything is working fine. when i connect adruino uno to my PC it automatically types what i want. as per my requirements. but i don't want to use full adruino uno. i want to convert the circuit in simple and smaller size. how to do that ?
You need a stand alone Arduino.
Check out one I made Standalone Arduino | Electric Projects
Also check out this tutorial https://www.arduino.cc/en/Main/Standalone
is there any way to use HID keyboard with adruino uno without upgrading atmel16u2 IC?
coz by doing this i can use the pauly's method .
You could just order/use a Pro Micro (on ebay for a few bucks, under $5USD for sure)
Pro Micro is really just a Leonardo but in the footprint of a Pro Mini..
which has the benefit of:
- Being a complete/professional PCB (not a breadboard)
- Doesnt need any 'flashing' of IC's to be an HID device (it is 'out of the box' so to speak)
- Is probably much smaller than you could get using a breadboard
They come in both +5v and +3.3v versions..