Geprc OpenLager is an external memory module for blackbox logging. The module consists of two parts. The first part contains 512MB of memory for logging and is connected to the flight controller via UART. The logging module weighs only 0.4g and measures 14x7x3.5mm. The second part includes a USB connector and is used for reading logs from memory. The USB module is 18.2x15.4x6.2mm in size and is not typically mounted on the drone. It is connected to the logging module via a connector only when retrieving blackbox data.
Status is indicated by LED lights. The red LED is on when the module is powered. Fast blue blinking indicates active logging. Slow blue blinking indicates a memory error. Format the memory via PC using the USB module.