I am developing a prototype that connects sensors to a processing unit (an arduino). The sensors reside inside a boot, which is a demanding location: curved, quite tight, and subject to a decent amount of wear and tear. I have incorporated the sensors into a flex pcb that I believe will work in the location, but am having trouble figuring out how to best connect it to the processing unit.
In an idea world, the flex pcb would be a "T" shape, with the T extending outside the boot and connecting to the arduino. But a T-shaped flex pcb will be much more expensive, so at this stage I'd rather use a small PCB and run wires off it.
What is a good way to attach some signaling wires to the flex pcb? I could solder them on directly, but worry about solder taking too much of the mechanical strain. Is there some other simple option that will be secure and not add much thickness to the flex PCB?