See: Headphone Jack (3.5mm) 2.5mm connectors are still ... 2013 by Rich Brome Editor in Chief Rich became fascinated with cell phones in 1999, creating mobile web sites for phones with tiny ...

While watching a video about old radios from the 1920s, a phone jack popped up. The host mentioned that phone jacks are super old and he wondered what was their origin. I always assumed they had ...

Also on board this shield are a pair of 1/8″ audio jacks, perfect for connecting a microphone and headphones. Yes, you can actually make cell phone calls with your Arduino now. The real star of ...