HGLRC F405 8S V1 Flight Controller FCHGLRC F405 8S V1 Flight Controller: Solder Free 8S Power Stop burning your fingers. This HGLRC F405 8S V1 Flight Controller is the solder free 8S drone build solution you've been demanding. It's a true plug and play FC designed for pilots who'd rather be flying than fuming over a cold solder joint. With a beefy F405 processor and support for up to 8S (yes, eight S), this board is ready for your most absurdly overpowered 7 inch rig. No magic smoke,