 Hello everybody, yet another day of rain, it just seems to never end, rain, rain, goes away then just comes back the next day. But anyway, let's get to the bench and have a little play around with a magnetometer. Okay guys, so we've got some satellites connected now and a save navigation. And what we're going to do now is we're going to just do a calibration of the compass here. Now there's two parts to this. The first part is to calibrate the compass here and then you save and reboot. And the second part is to go into the configuration and make sure you've got the correct magnetometer alignment. Now I'm just going to set mine back to default, reboot the system, put my thumb over the back of the beeper. It is very loud. Now we're going to go to the calibration. So with the calibration, when you click this button here, it's calibrate compass, you get 30 seconds. So in that time you want to try and turn the craft around in all directions. Do it as smoothly as you can. All you can do is emphasize that. Do it as smoothly as you can. You can't expect it to be perfect. Complete Mr. Smooth, but just try and do it as smoothly as you can. So let's go. So now I've got my 30 seconds and I'm just going to turn that around. I'm going to take it from the best as I can and turn this around. I'm now going to turn it around from side to side. I'm going to put it nose down. Just turn this around like this. I'm going to do the same the other way around. But I'm also going to turn it around like a bit of a star like this. Okay. So there we go. We got our numbers. That is now just saved. But we do need to save it to the flight controller to reboot. So we're going to do a saving reboot. I'll put my thumb just behind this to help prevent some of that loud noise. Okay. Okay. That's probably going up. There we go. Okay. So now we've got our numbers in here and that's good. They're all different numbers, which is good to see on the XYC axis. Now we're going to go into configuration. Oh, let's just have a quick little look and I'll show you first. So let me just reset the Z axis. Now if I go to the left, you can see we've got a little bit of drift off there. As it turns itself back and if I go to the right, whoa. Now there's a lot of drift off there. Now that's not good at all. Considering we're supposed to have 10, 9 satellites on. Let's go forward again. That is not good at all. You can see how that can turn out to be a nightmare if we're up in the sky and we try to return to home and pitch forward. We're going to be going the other way around. Look, that's not good. That's flyaway material. Okay. So remember there was that second part of this alignment. So let's go into the configuration. Let's go down, page the board and center alignment. And look down until you see the magnetometer alignment, mag alignment. Now I already know what mine is, but let's just say we're going to go through and we're going to find that individually. I'm not going to go through this whole lot with you, but I'm just going to pick one at random now. We're going to go for the CW 180 degrees. We're saving reboot. Put my thumb behind the pose to keep it a bit quieter. Okay, and then we just get the radio. Now let's go back to the setup so we can see ourselves here. Now, if I go to the left, as you can see, that's not good at all again. We've got weight and it's drifting. Actually, we're facing the wrong direction anyway. Let's just turn it around. We go that way. This time we're going in the opposite direction. You see, we're turning to the right. This time instead of to the left. And this way we're going to the left. This is no good at all. This is worse in fact than the default. But still, both of these, the way this is set up with this calibration is going to get you into a lot of trouble if you're out there. So let's go back to the configuration and now we're going to go to what I know is the correct one for this particular compass. That CW 270 flip. And I'm using a U-box compass. It's the MN8, or no, sorry, the M8N. I'm actually going to put this, because I'm in Europe. I'm just going to pause here. We're going to make no difference to this. But this, the 270 flip, will. Let's just reboot that now. Put my thumb behind the buzzer again just to keep that a bit quiet. It's very noisy. But as it's my last model alarm buzzer. Oh dear, sorry about that. As it's the last model alarm buzzer. So let's go back to the setup. Let's just reset the Z-axis. Now this time, when we go to our left, we go to the left and we hold steady. We're back to the right. We go to the right and we hold steady. We can turn into a dive and we hold steady. Full front pitch. That would pitch. Again, steady as a rock. And that's exactly what you want now. We can turn to north. And we can do the same thing. And we're holding steady. It's moving slightly on the degrees, on the heading there. I'm moving it slightly. But that's good enough. We're not actually drifting around anywhere or doing anything to and toward. And so we can say that that's happy. That isn't the correct magnetometer alignment. And a good thing about this as well is like, even though I'm doing this on the bench and so this could be a computer underneath the desk which is going to be giving out all sorts of noises. Even down to the screen. Switch mode power supplies about the place and the camera even. It's going to be causing some noises. So what we can do is, if when I take it out, which hopefully is going to be very, very soon indeed, let's just push this here for a second. When I take it out, let's say if I try a position hold and it is toilet bowling. And then I can bring it back in. Just flick it into a manual mode. Just take it out of an auto mode. Position hold or return to home. Get it back into like a manual horizon mode would be fine or even angle mode would be fine. But as long as you're not in one of those auto pilot modes you'll take control of that. And then we can just use our sticks and we can push this stick up to the right pull this stick down. And that is now giving us the opportunity again to do a compass calibration. And in a moment you'll hear it and it will let us know after that 30 seconds that we had before that we've completed that calibration. And we'll then see if it works for us any better or not. But this is the sort of thing you can do out in the field you see. When you can do this out in the field. There we go. So that's our 30 seconds up which means I can actually do it in the areas that I want to be flying. So every time that you go out you could actually do this. Now if you notice let's see what this is like now. Well we've got to do a bit of a save and reboot actually let's not forget that. I'm just going to put it to the calibration page it makes no difference. We can look back at the video to see if the numbers have changed as I expect they would have done. Let me put my finger behind there because it's like very noisy. So you can see the numbers have changed now let's have a little look at the setup. That's just telling us we've got enough satellites to be flying. Now again, if I go to the left it doesn't seem to be too bad. If I go to the right it doesn't seem to be too bad. It's probably not as good a calibration as what we did before because I wasn't as smooth with this one. And having it smooth will help. It will help. I'm going to put it to north or you know it's close to zero degrees there. See if it drifts off anywhere. Not really. Let's just drop it over there. Not really. So we can say that's calibrated again and there shouldn't really be too many problems but that is one good thing about it is if you are out in the field if you have got a bit of toilet ball it is quite easy like I said to push that throttle stick up to the top right and then bring your pitch stick down to centre bottom and you can get another 30 second calibration away from computers away from screens away from phones away from everything and then just put it up in the air again and try it. Try your position hold and if you get a tighter position hold then you know you're getting there. Okay guys that's it for this one. I hope that it's just taken you a little bit through that calibration and that's been easy enough to understand. Stay safe and I will see you in the next one.