3DR Radio 915Mhz Telemetry Kit [S211]


* Specs

3DR Telemetry Kit Specifications

Very small size

Light weight (under 4 grams without antenna)


Receiver sensitivity to -121 dBm

Transmit power up to 20dBm (100mW)

Transparent serial link

Air data rates up to 250kbps

MAVLink protocol framing and status reporting

Frequency hopping spread spectrum (FHSS)

Adaptive time division multiplexing (TDM)

Support for LBT and AFA

Configurable duty cycle

Built in error correcting code (can correct up to 25% data bit errors)

Demonstrated range of several kilometers with a small omni antenna

Can be used with a bi-directional amplifier for even more range

Open source firmware

AT commands for radio configuration

RT commands for remote radio configuration

Adaptive flow control when used with APM

Based on HM-TRP radio modules, with Si1000 8051 micro-controller and Si4432 radio module

* Contents

- Connect

5V ----- 5V

TXD ----- RX

RXD ----- TX



GND ----- GND

- Key Code

void setup() {



void loop() {

  if (Serial.available()) {

    Serial.print((char) Serial.read());




Posted by RDIoT

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