This is a PFET buffered 555 PWM board that comes fully populated and capable of running up to 3S mod builds. This PCB is a progression from the aphid board. With the Aphid, you can wire up whatever negative channel MOSFET you want separate from the board. With the Ladybug, an NFET is on the board itself. All the 510 and battery connections go thru the board and are able to easily accommodate 16 awg stranded and 14 awg solid wire. Also, the need to solder two separate wires onto the positive side of a battery clip is eliminated. Wholesale packs of 40 boards are available.