Communications

Erle-Brain 3 includes 2.4GHz WiFi and Bluetooth. This WiFi will allow to communicate with Erle-Brain 3, can be used to transfer files, plan a mission, configure the brain...

We recommend to use an external WiFi dongle in order to use the 5GHz bandwidth. Note that the RC works in the 2.4GHz and can overlap with the 2.4GHz WiFi

You could use a dongle WiFi to create an hotspot using Erle-Brain 3. This way, you don't need using wires to connect the device. Erle-Brain 3 is pre-configured to create a WiFi network in the 2.4GHz bandwidth using the internal WiFi feature, in order to be able to use together 2.4GHz RC and WiFi an external Dongle WiFi working in 5GHz is recommended.

The WiFi can be used for communicate with the autopilot, transfer files such as logs, plan a mission using a GCS (Ground Control Station), enable video streaming even control the drone.

Refer to Changing the internal WiFi by the external to enable external WiFi

You could plug an Ethernet wire to Erle-Brain 3 to have Internet access. You can use a internet access to install new software or to access the brain from your local network, this allow to communicate with other devices.

Erle-Brain 3 by default will obtain an IP address from the network DHCP server.

If you wish to work under Erle-Brain 3 as standalone device, is possible to do it! You will need a screen with HDMI port, an USB keyboard and an USB mouse.

Be caution when disconnecting devices from DF13 connectors, the first times connectors could be stiff.

The Erle-Brain 3 contains two I2C bus connectors, which gives access to the I2C bus. In this bus you could connect lots of different sensor and devices, i.e.: compass, gas sensors, temperature sensors, ...

Erle-Brain 3 has 12 channel of PWM output. Each channel has 25 mA current sink capability at 5V. In these channels, the most typical devices that you could connect are: ESCs, servos, gimbal servos,... The PWM can be used for powering the system, refer to Power section.

The next image show which are the PWM channels (In red channel numbers):

The top row (~) provides the PWM signal, the center (+) provides 5v and the bottom (-) is the GND signal. Make sure you plug the device connector in the right way.

The radio control receiver must be connected in the channel 14 rail, as shown below:

Copter, Plane and Rover support sharing information with a ground station (or transmitter) using telemetry.

If you wish to use a telemetry device in Erle-Brain 3, you have two ways of attaching it. You could use the UART port to attach it or the USB ports.

If you connect the telemetry into UART port, in the autopilot launch file put here (to connect to GCS):

$APM_BIN_DIR/ArduCopter.elf -A udp:$wifi -C /dev/ttyAMA0 $FLAGS

If you connect the telemetry into USB port, in the autopilot launch file put here (to connect to GCS):

$APM_BIN_DIR/ArduCopter.elf -A udp:$wifi -C /dev/ttyUSB0 $FLAGS