An image sensor may include crosstalk calibration pixels. When a source node has a data packet to send to a destination node, the source node calculates an estimated future location of the destination node prior to forwarding a data packet to the destination node. The receiving member meshes with a member on the battery pack to hold the battery pack in the cavity. Each set of flexure arms includes symmetric flexure arms. The assistant process has a second synchronous connection with the target application and an asynchronous connection with the main application.