• 3DR Radio 433Mhz Telemetry Module for APM 2 Flight Control Board
  • 3DR Radio 433Mhz Telemetry Module for APM 2 Flight Control Board
  • 3DR Radio 433Mhz Telemetry Module for APM 2 Flight Control Board
  • 3DR Radio 433Mhz Telemetry Module for APM 2 Flight Control Board

3DR Radio 433Mhz Telemetry Module for APM 2 Flight Control Board

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3DR Radio Module for Telemetry on APM 2

The 3DRobotics 3DR Radio is the ideal way to setup a telemetry connection between your APM and a ground station. Small, inexpensive and with great range, the 3DR radio uses an open source firmware which allows us to do things that cannot be done with other radios.

Radio Features
- Very small size
- Light weight (under 4 grams without antenna)
- Available in 900MHz or 433MHz variants
- 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
- Builtin error correcting code (can correct up to 25% data bit errors)
- Demonstrated range of several kilometres 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

Connecting your 3DR Radios
Important note: You cannot connect via the radios when your APM 2 is also connected via USB (they share the same port). Make sure you disconnect your USB cable from the APM 2 board before attempting a wireless connection.
You will need two 3DR radios, one for your aircraft, and the other for your ground station.
Looking at the above picture you will see that some of the radios have a USB connector, making it easy to connect them to your ground station. It uses a D2XX FTDI driver
The 'aircraft' type have a FTDI six pin header, allowing them to be directly connected to your APM telemetry port. Connect the air modules to APM 2 as shown below:


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