 Hello and welcome to ST at Electronica 2022. My name is Andrea Lombardo and I'm the CEO of DAOS Group, a design and manufacturing electronic company based in Milano, Italy. We have been partnering with ST since the very beginning of the system partner program and I'm here to show you one of the latest products that we designed for our customer Tokbo. Tokbo is a small company, it's a spin-off of a much bigger company that is Agrati. Agrati is one of the world leaders in a fastening system and I would like to show you how concepts like IoT, predictive maintenance, data analytics are becoming key components also of the infrastructure industry and building construction industries. You know, bolts and nuts are everywhere, can be extremely small or can be as big as the one I have in my hand and when a bolt is so big it's very possible that it is the key component of some critical infrastructure, could be a bridge, could be a tower, could be part of a railway system or could be used to attach an engine to the structure of the vehicle, could be a car, could be an airplane. Whatever is the final application of a bolt like this it's clear that failure is not an option and so here come the idea of Agrati of developing an electronic system capable of measuring one critical parameter of the bolt nut system. This critical parameter is the length of the bolt because you know when you fix the nut on the bolt what happens is that the length of the bolt changes and so measuring this change we can have an idea of how the system is performing and how we do that. We do that with this little piece of electronic that during the manufacturing process Agrati attached to the tip of the bolt. This electronic is capable of sending and ultrasound waves all the way through the bolt bodies it is reflected on the head and it's going back to the sensor so we measure the travel time of the wave knowing the propagation speed of the sound in the metal we know the elongation or the compression of the bolt system. We have a lot of electronic here we also have a non-volatile memory in which we store all the data collected by the system and we have a temperature sensor for compensation and then we need process we need the math process to process the data and we do that in the second part of the system in which we embed an STM32 microcontroller capable of dealing with all the data coming from the sensors and since the beginning we were aiming also at a wireless system and this is a reason why we selected from the vast portfolio of STM32 components we selected the WL model capable of embedding the Loras tech for wireless communication and when we talk about wireless system it's not just the communication capabilities but it's also the power consumption the WL was the perfect match for a battery powered system and more than that we put other sensors because you know these type of bolts are installed in very cool places of our infrastructure so getting other data like vibration and acceleration acceleration and pressure sensor you can get the full idea of the environment surrounding the bolt you see there is a lot of technology in this little piece of electronic and this is the reason why we have a lot of value in being a partner of STM32 because it's very important when we start a project when you have a customer having a vision about a new product it's very important to provide him some results in a very fast time and this is when we use a lot of the development board and the ecosystem coming from the ST portfolio and so we are capable of giving results in the matters of week so if you are interested in getting more information about the talk talking network you can go to their website that is www.talkbo.it and you are very welcome also to visit DAOS website where you can see a lot of other different applications that we developed together with ST and our website is www.daosgroup.it