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The ERS-GPS telemetry sensor is a specialised GPS unit designed by RadioMaster for use with compatible ExpressLRS PWM receivers. This plug-and-play sensor integrates with the receiver through the CRSF interface.
It has two modes: mode one provides accurate GPS data and mode two provides accurate ground speed. Mode one is ideal for capturing position and altitude logs when used with the ER series receivers that have a built-in barometer, and mode two suits measuring the speed of airplanes, jets, boats or cars.
A pass-through function allows easy expansion with more telemetry sensors through a daisy-chain arrangement.
Plug and play: connects through the CRSF interface.
Mode one: GPS data: position and altitude logs with ER series receivers that have a barometer.
Mode two: ground speed: for airplanes, jets, boats and cars.
Live stats: log position or track speed in real time with peak performance stats.
Daisy-chain port: in-and-out pass-through for more sensors.
Wide input range: 3.0 to 12.0V.
A GPS module listens to signals from navigation satellites and works out its position, speed and time. A flight controller or microcontroller uses that position for modes such as position hold, waypoint missions and return-to-home, or simply for logging where something has been. Supporting several satellite constellations means more satellites in view, which usually gives a faster and more reliable fix.
Mount the module as far as practical from motors, power wires and video transmitters, with a clear view of the sky, and let it get a full satellite lock before you rely on it. Poor mounting and interference are more common causes of GPS problems than the module itself. Keep the antenna face pointing up and secure the module so vibration does not shift it.
A first fix can take longer than later ones, particularly indoors or after the module has been off for a long time. A module with a backup battery or stored configuration can start faster the next time, but you should always wait for a solid lock outdoors before the first flight of the day.
Logging position and altitude on airplanes and gliders
Speed measurement on jets, boats and cars
Range and flight-path review after a flight
Adding telemetry to ExpressLRS PWM receiver setups
Chaining several telemetry sensors on one receiver
The sensor speaks the CRSF telemetry protocol and is meant for compatible ER series ExpressLRS receivers. The specification table lists a power supply of DC 3.0 to 12.0V and a current of 35mA at 5V.
A CRSF wire is included in the package.
Power supply: DC 3.0 - 12.0V
Current: 35mA (5V)
Telemetry protocol: CRSF
Size: 32.8 x 25.5 x 12.8mm
Weight: 13.35g
1 x RadioMaster ERS-GPS
1 x CRSF wire
ExpressLRS pilots who want a simple GPS or speed sensor on their PWM receiver.
CRSF.
One for GPS data and one for ground speed.
Compatible ER series ExpressLRS receivers.
Yes, the pass-through port allows daisy-chaining.
3.0 to 12.0V.
The ERS-GPS and a CRSF wire.
| Brand | Radiomaster |
|---|---|
| Dimensions | 32.8 x 25.5 x 12.8 mm |
| Input Voltage | 3.0-12.0V |
| Power Supply | DC 3.0-12.0V |
| Protocol | CRSF |
| Weight | 13.350000 g |
| Selling unit | PCS |
