IMU Sensor
AliExpress: WT901 9-Axis Inclinometer
Exact model: WT901 COMPASS
BUY FROM ALIEXPRESS
WitMotion WT901 9-Axis Inclinometer High-Accuracy Acc+Gyro+Angle. Tracked, affiliate link.
AliExpress: WT901 9-Axis Inclinometer
Exact model: 3-in-1 Converter
BUY FROM ALIEXPRESS
Color: 3-in-1 Converter. Tracked, affiliate link.