Toolbox
Handy online tools for RC pilots — flash firmware and more, right in your browser, no install needed.
ExpressLRS FlasherBuild and flash ExpressLRS firmware for transmitters, receivers and backpack devices in the browser. Firmware comes straight from the official ExpressLRS online source — UART, Betaflight / EdgeTX passthrough and STLink.Sirius Firmware UpdateUpdate the RF-link firmware of Sirius transmitters and receivers online (ExpressLRS CRSF / ExpressLRS MAVLink / mLRS). Firmware comes from the official CoreWing source — direct UART or Betaflight / INAV / ArduPilot FC passthrough.FC Firmware FlasherFlash ArduPilot / INAV / Betaflight firmware to STM32 flight controllers over USB DFU. Firmware comes from the official CoreWing source, or flash your own local .hex / .bin file directly.Battery Wiring DiagramPick a cell type and series-parallel layout (e.g. 4S2P) and get a 3D spot-welding diagram of the pack — nickel-strip runs on both faces, balance leads and main discharge leads at a glance. Rotate freely, export an image, and get voltage, capacity and energy figures.CoreWing BuddyTune ArduPilot / PX4 / INAV flight controllers right in the browser — read and write parameters, calibrate and configure with no client download. Desktop browsers only.