UV40 TTL Levels

Wireless & IoT
1

I want to interface a UV40 with carrier board to an OOPic micro controller. My understandig is that the OOPics TTL serial is 5v and the UV40 is 3.3. What will I have to do to get them talking? I don’t want to use USB or RS232. I’d like to keep it all TTL.

Thanks,

Jim…

2

Never mind, that’s all answered in this post: http://www.sparkfun.com/cgi-bin/phpbb/v … .php?t=512

Thanks,

Jim…