Know your craft. It is extremely important to know how to arm and disarm your quad. You should never touch or be close to a copter unless it is safely disarmed. On my setup, pushing both sticks down and towards the center will arm the quad, and pushing the sticks down and out will disarm it. You must disarm your quad (or any RC, for that matter) every single time, especially before you reach down to pick it up. These props can injure you (seriously, Google it if you don't believe me) and you must be careful around them.

Pair the Radio to the Receiver - Do this by plugging the binding jumper into your receiver before turning it on and then by holding down the pairing button on the transmitter module when you turn the radio on. When pairing is accomplished, there is a small red light inside of the receiver module that will turn on. Note that it's very difficult to see said light through the tinted plastic case of the receiver.

Throttle Calibration - To calibrate the throttle of your ESCs to match your radio, you'll need to have your radio turned on with the throttle at 100%. Then plug in the battery of your quad while you hold down buttons 1 and 4 on the KK board to put it into "throttle pass-through" mode. Turning on at 100% and then lowering to 0 will calibrate the ESCs to know the throttle range. If you don't have your KK board plugged inline, or you're using a different FC, the Q-Brain comes with a throttle hub that you can use to calibrate the motors at the same time. Feel free to use that instead of throttle pass-through mode.

Configure the KK Board - In the graphic menu on the KK board, the first thing that you should do is select the correct prop layout for your quad. For this build, you should select the X shaped 4-motor copter. Take a minute to note the direction that each prop spins on the screen, you'll need to know that later. Then perform a sensor check, calibrate the accelerometers, and turn on auto-level. It's a good idea to familiarize yourself with the KK board's menu before going much further.

Check Motor Direction - You must do this step safely. Do not install your props yet! To test the motor direction, put a tape flag on each motor hub so that you can spin the motors and safely be near them.

Plug in the battery, arm the quad, and throttle up just enough to make the motors spin. The left front and right rear motors should spin clockwise, and the right front and left rear motors should spin counterclockwise. (Viewed from above with the front facing away from you... The same way we talk about car tires).

If you have a motor that's going the wrong direction, all you have to do is switch two of the wires going to it. Turn it off before you do this! Switching any 2 of the 3 wires will reverse the motor's direction. Disarm and power down the copter when you're done.

Install Props - Only after you're sure that your motors are spinning the right directions and that your battery is safely unplugged should you install the propellers. Remember which direction each prop needs to spin. The left-front and right-rear motors should spin clockwise, and the right-front and left-rear motors should spin counterclockwise. Also be sure that you're using the correct plastic shaft adapter (included with the props) and that you've got the aluminum spacer on top of the prop with the beveled side pointing down towards the propeller.

Using a Mode 2 Radio Transmitter - To fly a quadcopter with a Mode 2 transmitter, which is the North American standard, you'll mainly only need to learn about the two joysticks. The switches and knobs are for channels that we won't be using.

The left stick moves up and down to control your throttle. Higher throttle causes your copter to ascend, and less throttle will make the copter descend. Moving the left stick from side to side will cause the craft to rotate or yaw like rudders on a helicopter. The right stick makes the quadcopter travel forward, backward, left, and right like the cyclic (joystick) in a helicopter.

Check Radio Channels and Directions. Find a safe area to set up your quad and do some testing. We're not going to take it into the air yet, but the props will be spinning and you should go to an area that is safe to fly (i.e. not your bedroom). Turn on your radio, plug in the battery, step back and make sure that it's safe to spin the props, and arm the quad. Slowly raise the throttle until you have all 4 props spinning at a very low power. On the right joystick, tilt the stick in all 4 directions to see if the quad looks like it wants to lean that way. If you don't notice anything, give it a touch more throttle, just be careful to not take off yet. After you've tested the right stick in all 4 directions, it's time to test the left stick. Without moving the throttle up or down, slide the left stick to one side. The craft should rotate the same direction. Tilting the stick the other way should rotate the other direction. When it's all said and done, you should have confirmed that 6 directional functions worked: left and right yaw on the left stick, and tilting in all 4 directions on the right stick. Don't forget to disarm it when you're done!

Troubleshooting. You may determine that you've got a channel backwards (i.e. left is right or up is down) or you may find that you've got a channel switched with another one (rotate left leans forward, etc). If in doubt, confirm that you've wired things correctly. If the wiring is correct, the adjustments you need to make will be in the transmitter's menu or in the Open TX Companion program. Refer to the manuals if you need to make any of those changes.