 I design air conditioners. Cool job, right? But we also did a deal with NTU and I got to work with a whole bunch of scientists. And every week we'd have our design meetings. We all get around in the room. And the most important thing, you leave at the door coming in to our designs, they talk. Leave your ego outside because, believe it, we would bash it. Why does it make a difference when you're talking about design? It's simple. If you've got an ego, you don't necessarily speak out because you're thinking, well, what if I make a mistake? I lose this. Well, what if you do make a mistake? We all made mistakes in our team. One of our developers, one of the scientists was always on about airflow being not so high on one of our original designs. And we're going, well, how much airflow? One day he says 40 cubic meters a second. That's like jet engine territory. So when we worked it out, because we now needed it by fans so we could build a prototype, I needed a 10 horsepower fan that would pin you against the wall from three meters away. Didn't work. But so we had to go back to the drawing board. So we did. And we no longer had a nice compact design we were going to put in the attic. When we ended up with a split system, we'd have to machine outside half inside. But that's also catalyst for a lot of other ideas. Every time you get a bad idea in the design room, somebody comes along. Hey, that won't work. But if we do it this way, this works. So we do this every day of the week in our meetings. If you've got an ego, that does not happen. You out the door, you're gone with an ego. Now the same scientist is responsible at first. So extremely advanced mathematics. Our new quality designs, meaning that our air conditioners are now roughly double the efficiency of Diakon's best. Where would he be if he'd worry too much about his ego? Would he have done the math? Would he have made the breakthrough? Not necessarily so. So always take chances. Like it says over here with Mr. Zuckerberg. Move fast and break stuff. Take chances. Don't be afraid to fail. And of course my little circuit board. Say the prototype board here. Quick. You've got the camera there, right? This one. Because I'm recording a voice as well. So what this board as far as to control our new air conditioner. And I've got a few blocks on it. Power systems are over here. Safety circuitry and ADCs for our input circuits are here. And right here we have two footprints. We're using Android Things, which is an unusual choice. But we're doing that because we need online security and we need online updates. What we cannot afford is a breaking event. A new margin of breaking event involving 10,000 air conditioners in 10 different countries that are worth $10,000 each. How much does that cost? So Android Things. It's specifically designed for robust online updates, robust security and controlling ILT systems. So that's why we chose it. And the reason for a Raspberry Pi product print on here is because supported for development of Android Things is the Raspberry Pi 3B. But we can't go to production with that. To go to production we have to use an NXP module because it's got advanced security features. So that's where the smaller footprint and the Edison style header comes in. So that's my little hack. So I put that together recently and now just starting to assemble the boards. But before I even got to assembly, I found I'd messed up on footprints as well. Up the waste letter, I ordered the wrong size. So I had to go back and reorder up the waste letters. It would be fitting. But also because I have a problem with the way libraries are done in searching an eager pad for capacitors, I misjudged the size of some of the capacitors. My footprints are too small. So I've got a little bit of hacking to do. But that's okay. This is the first of what would be between four and six versions before we get to production-ready designs. So there you have it. There's a few ramblings for you. And of course, one other little rambling. Whenever you go anywhere, wherever there's professional people about, whether it's an airport, train station, never be afraid to speak up. One of my friends now works for Singapore Power because I set a law tour over to university. When she needed to change jobs, I was the connection. So wherever you go, say hello. Never know who you meet and you never know when you're important to that person or they're important to you. I met my boss at a hardware meeting. I'm now involved in the development of the cleanest air conditioners on the planet. It's not just that they're more efficient. We're moving toward using new classes of flamboyl refrigerants because we're able to use very, very small amounts. 500 grams versus the average of 11 kilograms for your traditional split system. But where the big difference comes in is when you release gas at the end of life. Standard refrigerants have global warming potential of 2088 for our 410A. The new Deakin refrigerant, R32, has 677 times CO2 in global warming potential. The flamboyl refrigerants we're using because we're using factory sealed systems. We're able to do that. Global warming potential on one of them is about three and the other one is less than one. Combined up with the difference in the amount of refrigerant we're upwards of 30,000 times cleaner. All this because we put a whole bunch of scientists and geeks in a room and said, go at it, guys. Sorry, make it up as you go, now. Ashy judder's egos. Come out with an idea and I've often done it. Come out with an idea and somebody said no. You're completely wrong and you're out of dynamics. Ten minutes later somebody else comes up, John Bourne starts drawing and says, this will work. We have a solution. So there you go. Thanks for listening.