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For my DC Motors Mobile Robot I am using an Arduino Nano (with no connectors soldered in) and a dual DC motor driver (DRV8833) which now fit nicely inside the 3D printed chassis. I now need to make all the connections between these two PCBs and the four micro DC motors. In the past I have soldered wires directly but this caused me endless problems when trouble shooting so I decided to solder DuPont connecting wires instead. I cut off one connector, soldered one wire to one PCB and the other wire ...