ARGUS 20A F405 ELRS is a lightweight AIO board combining flight controller, ESCs, and ELRS receiver. The board is suitable for smaller 2–3" drones powered by 3–4S LiPo batteries and equipped with digital video transmission. The board does not have a chip for analog OSD. There are pads on the board for connecting an external USB connector.
The core of the flight controller is the STM32F405 microprocessor and ICM42688 gyroscope. The board also features 8MB memory for blackbox and a barometer for altitude measurement. The ESCs can handle current up to 20A and use Bluejay firmware. They are suitable for motors size 1404 and similar. The ELRS receiver operates at 2.4GHz and connects via UART. An external antenna connects through an IPEX1 connector. Power for peripherals is provided by a 5V/2A BEC. The board also includes a current sensor.
The mounting hole spacing is 25.5 × 25.5 mm, the board dimensions are 36 × 36 mm, and the weight is 6 grams.