Automated control of an electrical connection joining process

A system for electrically connecting a wire to a connection pad of a flexible circuit strip including a polymer body, a plurality of electrodes, a plurality of connection pads and a plurality of conductive traces, a trace connecting each of the plurality of electrodes to a connection pad of the plurality of connection pads comprising:

• a heat joining tool comprising one or more heating element;
• a sensor configured to measure a resistance between said joining tool and an electrode electrically connected to said connection pad, which resistance indicative of temperature of said flexible circuit strip;
• a controller configured to:
• receive measurements of said resistance from said sensor;
• and
• control activation of said one or more heating element to heat a tip of said joining tool for connecting a connection pad of said plurality of connection pads and a wire, in proximity to said tip, while maintaining said resistance below a defined threshold associated with said flexible circuit strip reaching a defined damaging temperature.

A controller for controlling electrically connecting of a wire to a connection pad of a flexible circuit strip using a heat joining tool, wherein the flexible circuit strip includes a polymer body, a plurality of electrodes, a plurality of connection pads and a plurality of conductive traces, a trace connecting each of the plurality of electrodes to a connection pad of the plurality of connection pads, which controller comprising circuitry configured to:

• activate said joining tool to heat a tip of said joining tool to electrically connect said wire to said connection pad;
• measure, during said activating, a resistance between said joining tool and an electrode electrically connected to said connection pad, which resistance indicative of temperature of said flexible circuit strip;
• and
• control activation of said joining to maintain said resistance below a defined threshold associated with said flexible circuit strip reaching a defined damaging temperature.