Walksnail WS-M181 is a GPS module with an integrated compass. The module uses a modern u-blox M10 chip, which surpasses the previous M8 generation in accuracy and satellite acquisition speed. The QMC5883 compass is especially appreciated in combination with iNav firmware and advanced flight stabilization.
The advantage of the GPS module is its large ceramic antenna and small overall dimensions of 18x18x4.5mm. The GPS module connects via UART (RX, TX pins). The compass connects via I2C bus (DA, CL pins).
The item has been opened. The GPS module is as good as new and shows no significant signs of use.