Keep symmetric placement (and layout) for both sense resistors (red squares) while placing them close to the driver IC. This avoids additional trace resistance from leading to lower current settings. Also, parasitic inductance on sense resistor traces should be avoided, as it degrades microstep performance and increases chopper noise. Each sense resistor should use at least two vias to the ground plane. Place filter capacitors (green squares) as close as possible to the driver‘s supply pins. The 4.7 µF ceramic capacitor on 5VOUT should be placed with its GND return going directly to the GNDA pin, use as short and as thick connections as possible. The motor supply voltage pins should be decoupled by ceramic capacitors. Additional electrolytic capacitors help reduce electrical noise and avoid swing-over destroying the circuit in lab setups, where the power supply may suddenly be connected or disconnected. The switching motor coil outputs have a high dV/dt. Capacitive stray into highly resistive signals can occur if the motor traces are near other traces over longer distances.