Abstract: An electronic device is provided. The electronic device includes a substrate, a plurality of electrodes, a soldering material and a plurality of pins. The electrodes are formed in the substrate. The soldering material is disposed on the electrodes. The pins contact the soldering material and electrically connect to the electrodes, wherein at least one of the pins includes a post and a base. The post has a fixing end. The base is disposed on the fixing end of the post, wherein a plurality of openings are formed on the base, passing through the base along an axis, and the axis is parallel to the post.

Abstract: An electronic device is provided. The electronic device includes a substrate, a plurality of electrodes, a soldering material and a plurality of pins. The electrodes are formed in the substrate. The soldering material is disposed on the electrodes. The pins contact the soldering material and electrically connect to the electrodes, wherein at least one of the pins includes a post and a base. The post has a fixing end. The base is disposed on the fixing end of the post, wherein a plurality of openings are formed on the base, passing through the base along an axis, and the axis is parallel to the post.

Abstract: A tool includes a housing having a channel for detachably receiving a tool handle and having a chamber for receiving one or more batteries. A socket is pivotally secured to the housing and includes a bore for receiving a light bulb. Two conductor blade are secured to the socket and electrically coupled to the case and the center electrodes of the light bulb. Two conductor arms are secured in the housing and have one end electrically coupled to the conductor blades, even when the socket and the conductor blades are rotated relative to the housing.

Abstract: A tool includes a handle having a driving stem for driving fasteners. A light device includes a housing having a channel for receiving the handle, a socket received in the housing, a light bulb received in the socket, one or more batteries received in the housing and electrically coupled to the light bulb, and a switch for controlling the energizing of the light bulb. The housing may be attached to the handles of various kinds of tools. The socket is rotatably secured to the housing at a pivot pin for rotating to any suitable angular position relative to the housing.