SparkFun – DC Barrel Jack Adapter – Male

SparkFun: PRT-10287

Description: This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5×2.1mm, center-positive male barrel jack. If you need to connect bare wires to a barrel jack on an Arduino or a development board, this might be the simple solution.

Don Luc