We are big fans of Joe Grand! You may know him from his awesome designs like Emic 2 Text-to-Speech, Defcon badges, JTAGulator and many more on Grand Idea Studio. We loved watching Joe introduce cable TV audiences to hardware hacking on the Discovery Channel show Prototype This!
Here’s a fun project from Joe Grand that he has shared on OSH Park:
Joe writes: “The design features an Arduino Mini Pro 328, 2.2-inch TFT liquid crystal display (LCD), DRA818U voice transceiver module, electret condenser microphone, speaker, and buttons for channel/ frequency selection and push-to-talk capability. Bitmap images are stored on a microSD card and displayed on the LCD to indicate the currently selected channel. A 2000mAh Lithium-Polymer battery provides more than 20 hours of playtime before recharging is necessary.”