ive been having a lot of trouble uploading code to the arduino bt, every time i try i get the response: "programmer not responding". i managed to upload several times right after i started developing, but in the last couple weeks i havent been able to get my code to successfully upload even once. ive looked at a lot of other threads and can see this is a really common problem. is there any way i can buy some hardware or create a development board that will allow me to upload my code to the arduino bt via usb like with the other arduinos? it just seems like it would be much faster to develop that way.