Product overview
The Holybro DroneCAN RM3100 Professional Grade Compass (IP66) is a vehicle compass and magnetometer intended to support heading determination and orientation calculations. Its sensing architecture uses three axes and PNI magneto-inductive technology to measure magnetic fields. The module has an IP66-rated housing and a software toggle for CAN termination resistance. The supplied configuration contains one DroneCAN RM3100 Compass; this is a sensor peripheral for integration into an unmanned vehicle.
Integration uses a 4-pin JST-GH1.25 output connector, with cable length options of 27cm or 42cm. DroneCAN allows the compass to share a bus with other DroneCAN peripherals while leaving flight controller serial ports free. Installation should position the module far from motor coils and other metal parts for best results. Measurement settings involve a tradeoff: increasing cycle counts improves sensitivity and reduces noise while lowering the maximum sample rate. For three-axis sampling, divide the listed single-axis maximum rate by three.
Specifications
| Specification | Value & conditions |
|---|---|
| Sensor architecture | 3-axis magnetometer using PNI magneto-inductive technology |
| Output protocol | DroneCAN |
| Field measurement range | -800 to +800 μT |
| Gain | 20, 38 and 75 LSB/μTCycle counts: 50, 100 and 200, respectively. |
| Sensitivity | 50, 26 and 13 nTCycle counts: 50, 100 and 200, respectively. |
| Noise | 30, 20 and 15 nTCycle counts: 50, 100 and 200, respectively. |
| Maximum single-axis sample rate | 1600, 850 and 440 HzCycle counts: 50, 100 and 200, respectively. Divide by 3 for maximum 3-axis sample rate. |
| Operating temperature | -40 to +85 °C |
| Ingress protection | IP66Housing. |
| Output connector | 4-pin JST-GH1.25 |
| Cable length options | 27cm or 42cm |
| CAN termination control | Software-controlled CAN termination resistance toggle |
| Flight controller interface use | Supports a shared bus for DroneCAN peripherals without occupying a flight controller serial portDroneCAN connection. |
| Installation placement | Place the module far away from motor coils and other metal partsFor best measurement results. |
| Package contents | 1x DroneCAN RM3100 Compass |
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