APM 2.52 Flight Controller Board

Introduction

The APM2.52 Control Board is used for make UAV. Like ArduPlane ArduCopter and ArduRover.You can pass the Mission Planner to download firmware, and arranged flight Mission.Plug in your RC system, add a battery and you should be ready to set ArduCopter up to fly both in RC and Autonomous mode. This version is ready to use, with no assembly required. It allows the user to turn any fixed, rotary wing or multirotor vehicle (even cars and boats) into a fully autonomous vehicle, capable of performing programmed GPS missions with waypoint.

Features

1.High quality autolevel and auto altitude control – fly level and straight. Or fly the awesome "simple flight" mode.

2.No programming required. Just use an easy-to-use desktop utility to load the software with one click and set up ArduCopter with quick visual displays.

3.Unlimited GPS waypoints. Just point and click waypoints in the Mission Planner, and ArduCopter will fly itself to them. No distance limits! You can script entire missions, including camera control!

4."Loiter" anywhere. Just flip the toggle switch and your copter will hold its position using its GPS and altitude sensors.

5.Return to launch. Set home to any location and flip a switch to have ArduCopter fly back automatically.

6.Do all mission planning via a two-way wireless connection option. Waypoints, mode changing, even changing the gains of every control parameter can be done from your laptop, even while the copter is in the air!

7.Automatic takeoff and landing. Just flick a switch and watch ArduCopter execute its mission completely autonomously, returning home to land by itself in front of you when it's done.

Hardware Specification

APM2.52 Hardware Configuration

• ATMEGA2560 microcontroller
• MPU6000 3-axis gyroscope and 3-axis accelerometer
• MS5611 pressure sensor
• HMC5883L 3-axis Magnetometer

NOTE:

Your APM 2.5 board is designed to be powered by the included Power Module via the Power Port connector. You can, however, power it from an ESC or some other external 5v source, although that can be less reliable. If you do choose to use an alternative power source, you need to put the little jumper that came in the bag on JP1 pins, next to the "new diode" marked at the left above. If you are not powering the board from an external source, the JP 1 jumper should be off (this is the normal configuration) If you want to explore other alternative power schemes, a guide is in the Appendix here.

Assembly

• Assemble your ArduCopter frame

You can built your frame by yourself or buy it from http://store.3drobotics.com/

• Connecting your RC input and motors

More details refer to http://code.google.com/p/arducopter/wiki/APM2RC

• Install Mission Planner and download firmware

More details refer to http://code.google.com/p/arducopter/wiki/AC2Installation

• Configure RC and Fight Mode

More details refer to http://code.google.com/p/arducopter/wiki/AC2_First

Flying

Flight Test Process

! Warning ! Read This Safety Section Before Flying - [1]Bold text

To Test Loiter and Altitude Hold:

1.Set up your APM so that Stabilize mode is at one extreme of your three-position mode select switch on your RC transmitter, Alt Hold mode is in the middle and Loiter mode is in the third position.

2.First, it´s important that Stabilize Mode is working OK. Set the Mode switch to Stabilize, turn on the transmitter and connect your battery. Wait until the GPS gets a lock. (Both the Blue GPS LED and the Blue C LED on the APM should be on and solid before arming and taking off). (It is even better to wait a bit longer to allow the GPS acquire additional satellites.) Note! the UBLOX GPS works differently On the UBLOX GPS the LED on the GPS module is off during satellite acquistion and on blinking when the satellite is acquired.

3.Start flying in Stabilize mode. Make sure you can take off, fly comfortably, and land. If you find it tilting, land and run the "Level" command in the Mission Planner. Fly through a whole battery like this, getting a feel for the controls (this will also calibrate your compass).

4.Now change batteries and try the auto modes. First, try Alt Hold at an altitude of about 20 meters. Your actual current throttle position is recorded as the "hovering point" when you switch to an altitude holding mode so it is important that you are not ascending or descending when you switch to Alt Hold. You should be able to fly around with the copter maintaining the same altitude, plus or minus a meter or so.

5.If that's working well, try Loiter. Just fly to a safe spot with lots of room around it and an altitude of about 20 meters and switch into Loiter. It should try to stay in that position, plus or minus about five meters.

6.When you have finished flying in Loiter or Alt Hold modes (or if anything unexpected or undesirable happens)switch back to Stabilize mode and land. (You cannot land and turn the motors off in Loiter or Alt Hold mode.)

APM Mission Planner GCS

The APM Mission Planner that we use for most APM setup and mission scripting also includes an excellent built-in ground station.

Details on how to use it are [2].

LED Describtion

• LED A：It gleamed on behalf of the flight control is Disarm (inactive) state, shake will not start the motor control device of throttle. Only keep the remote controller rudder to the right more than 4 seconds to activate A light into light, said the current in the activated state, can fly. In debugging, moves on the ground, to ensure that A lamp in A blink state, lest appear dangerous.
• LED B：Ignore
• LED C: Indicates the status of GPS.If the satellite positioning, GPS has found and the LED light.We haven't the GPS positioning, flicker;If there is no GPS, the lights go out.Using GPS flight, should be after electrify until a blue light and then take off.
• LED RX TX：In data transmission when rapid flashing, such as ground station software connected with USB cable and computer, or when digital radio communication;
• LED Alive：Whether power or USB connect，it will light all the time.