2 layer board of 0.36x0.91 inches (9.09x23.11 mm). Futaba SBUS to serial inverter. This is used for connecting SBUS compatible RC RXs with Naze32/Flip32 multirotor flight controllers on input pin 4, and enabling “feature SERIALRX” in the Baseflight CLI. The holes in the board are for cable strain relief when used with standard 26AWG servo wire. The strain relief holes can be removed with flush/side cutters for mounting with pin headers instead. This is useful if you with to mount the inverter directly to the SBus output pins on the my Rx and/or input pins on the flight controller. Parts: 10k Ohm 0805 resistor 1k Ohm 0805 resistor MMBT2222A SOT-23 NPN transistor