This stereo FM transmitter was completely custom made. I made this because my car at that time did not have an AUX or CD input, only a radio. I'd plug in this transmitter to my phone's 3.5mm and play music using the car radio and my awesome car sound system.

Knoweldge: Electronics • Interaction Design • My Hands
Tools: Altium Designer (Schematic & PCB) • LTSpice • Breadboard • Soldering Iron • Test Tools