1. Do not power on the board without gps and wireless telemetry modules’ antennas connected!
2. Do not disconnect antennas when the board is powered on!

Mounting the board

Mount your board on your copter airframe. It's highly recommended to mount the board as close to the geometrical center of the copter as possible. Mounting should be done with four 3 mm nylon screws. Add rubber spacers to reduce motors’ vibration noise.

Note the "FWD" arrow to install the board properly (`FWD` = Forward).


Connect the general peripherals as shown on the diagram below:



External GNSS / MAG

If you’re using external GNSS / Magnetometer module board then the connection should be as following:

SmartAP PRO 0.2 and later

GNSS / Magnetometer cable goes to dedicated GNSS / MAG port having 6 wires (GND, SDA, SCL, RX, TX, 5V). Image

SmartAP PRO 0.1 and earlier

GPS Cable (4 wires: GND, 5V, RX, TX) goes to GPS port and magnetometer cable (I2C: SCL, SDA) goes to Magnetometer port as shown on the picture above. Image

Make sure to place GPS module as far as possible from:

  • Main body of the airframe
  • RF emitting devices such as transmitters
  • High-current cables (ESC / motors power supply)

GPS Receiver

Connect GPS antenna to GPS antenna port. This is only for the versions which have integrated GNSS module.

RC Receiver

After mounting the board you need to connect cables from RC Receiver to SmartAP PPM / SBUS Input. Image You can also connect FrSky S.Port from FrSky receiver and get real-time telemetry on your FrSky transmitter (e.g. Taranis) screen. Simply connect S.Port wire from receiver to Tel pin next to SBus input.

Channels assignments should normally be as following:

  • Input channel 1 – Roll
  • Input channel 2 – Pitch
  • Input channel 3 – Throttle
  • Input channel 4 – Yaw
  • Input channel 5 – Mode selection
  • Input channel 6 – RTH Mode
  • Input channel 7 – Auto Mode

Modes can be remapped in Configurator software later.

RSSI Monitoring

If you want the flight controller to read the information about RSSI (Received Signal Strength Indicator) from RC receiver - simply connect the RSSI output and GND from your RC receiver to PWM I/0 #13 of the flight controller. RSSI information will appear in the GCS and also on OSD screen.

Motors ESC

Connect ESC inputs to SmartAP PWM outputs 1-12. The first motor is always front or front-right, it’s spinning direction is CCW.


Be sure NOT to mix up polarity!
GND line (black) is near edge, +5V line (red) in the middle, Signal line (yellow) is upper row.

Telemetry module

Connect telemetry antenna to telemetry antenna port. If you would like to use external telemetry module - connect GND, 5V, RX, TX pins of the Telemetry port to external telemetry module. Later, you will need to disable onboard telemetry module SmartAP GCS Configurator software.

OSD Video

SmartAP has integrated OSD (On-Screen display) module. It means that you can connect your camera output to the autopilot (instead of direct connection to the video transmitter) and then connect the Video Output of the flight controller to the video transmitter. In this case, the autopilot will overlay the flight information (mode, altitude, speed, battery status and etc.) on the screen. Connect the video camera to Video IN port of the autopilot (GND, 12V, VIN). Connect the video transmitter to Video OUT port of the autopilot (GND, 12V, VOUT).


SmartAP OSD supports both PAL / NTSC video standards with automatic detection and configuration.
Check the voltage ratings for your video camera and video transmitter! SmartAP outputs 12V and normally Camera and Video TX require 12V power supply, however, some of the cameras / transmitters need 5V or any other specific voltage leve. Check this carefully and provide the required voltage level. Otherwise, it can damage your Camera / Video TX!

Electromagnetic sounder

Connect Electromagnetic sounder to BUZ port of SmartAP.

Power supply

Connect power supply cable from main power distribution board of the UAV:

  • SmartAP PRO 0.1 and earlier: 10-36 V, 3S – 8S
  • SmartAP PRO 0.2 and later: 10-60 V, 3S – 14S

LED & Buzzer

Buzzer: 12V, 0.2A (included in the kit) LED 1-4: 12V, 0.2A per each channel (enough to power LED strip of 25cm length)

Pressure sensor foam

Pressure sensor is highly sensitive to the air pressure noise generated by the props and sunlight. It’s highly recommended to add foam coverage on pressure sensor to decrease the noise effect and improve measurements which will result in better altitude hold precision. Example is shown on the picture below:



Dimensions of the board are 80x80 mm. Mounting holes diameter is 3 mm, distance between the center of the mounting hole and board edges is 4.5 mm. Image

SmartAP PRO v .2 pinout


SmartAP PRO v .1 pinout


SmartAP PRO v .0 pinout