FlySky FS-GT2 + FS-GR3E: specs
A 2-channel 2.4 GHz pistol-grip transmitter (FS-GT2) listed by the maker for car and boat models, with a 3-channel PWM receiver (FS-GR3E). The maker lists the protocol of both as AFHDS.
Specs
| Spec | Value | Source |
|---|---|---|
| Transmitter channels and models | 2 channels; models: car, boat | source FS-GT2 specifications |
| Transmitter radio | 2.4 GHz, protocol AFHDS, transmission below 20 dBm, channel resolution 1024 | source FS-GT2 specifications |
| Transmitter range | 100 to 200 m (ground) | source FS-GT2 specifications |
| Transmitter battery | 1.5AA x 8 (maker text); no charging port; low voltage alarm below 9 V | source FS-GT2 specifications |
| Transmitter data port and antenna | Phone jack (PPM); external single antenna | source FS-GT2 specifications |
| Transmitter size, weight, certification | 159 x 99 x 315 mm; 328 g; CE, FCC ID N4ZFLYSKYGT2 | source FS-GT2 specifications |
| Receiver FS-GR3E outputs | 3 PWM channels; RSSI not supported; online update: No | source FS-GR3E specifications |
| Receiver FS-GR3E supply voltage | 4.0 V to 6.5 V | source FS-GR3E specifications |
| Receiver FS-GR3E radio and range | 2.4 GHz, protocol AFHDS; 100 to 200 m (ground); single antenna 150 mm | source FS-GR3E specifications |
| Receiver FS-GR3E size and weight | 35 x 22 x 12 mm; 5 g | source FS-GR3E specifications |
Power
| Value | Source | |
|---|---|---|
| Supply | Receiver 4.0 V to 6.5 V; transmitter 1.5AA x 8 (maker text) | source FS-GR3E specifications |
Pinout
We don't publish a pin table for this part: no official source we could verify gives one. Check the labels printed on your module, and see the notes below.
The maker's pages give no pin table for the receiver.
Build with it
Project ideas for the FlySky FS-GT2 + FS-GR3E. Each link opens Soldr with the prompt filled in; Soldr assigns the pins, checks power and shows how to wire every part.
- Steering servo from the wheel: Four NiMH cells are about 4.8 V nominal, inside the receiver's 4.0 V to 6.5 V range and at the 4.8 V the SG90 maker page lists. The servo's stall current is not documented, so keep the load light. Learning project.
- Wheel and trigger pulse display: The Uno's 5 V pin is inside the receiver's 4.0 V to 6.5 V range and the sketch times the PWM pulse on each input. The maker page gives no signal voltage level for the receiver output pins; measure it with a multimeter before connecting it to any 3.3 V board. Learning project.
- Two-servo steering and lever demo: Each of the two receiver channels drives one servo from the same four-cell pack. Servo stall current is not documented, so test one servo at a time and use fresh cells. Learning project.
Common mistakes
- Supply the receiver with 4.0 V to 6.5 V only; a 2S LiPo (about 7.4 V) is above the maker's range (source).
- The transmitter low-voltage alarm is below 9 V with eight cells, so use eight fresh AA cells and do not run with a weak set (source).
- The 100 to 200 m range is measured on the ground; range-test with the receiver in its final position. The maker page gives no signal voltage level for the receiver output pins; measure it with a multimeter before connecting it to any 3.3 V board. (source)
Not covered by the official source
- The maker pages give no receiver current draw and no pin table.
- No source states any 2.4 GHz use rules for this set, so none are given.