More and more sites require two-factor authentication via SMS. From a security standpoint, it's very good, but it can become bothersome if the login is shared by several people. This week, we are going to see how to receive an authentication SMS and to transfer it to several people.
A few years ago, we demonstrated how to use a Yocto-milliVolt-Rx to measure DC current, by measuring the very low voltage at the terminals of a shunt resistor. More recently, we thought that it could be useful to extend this scenario to the measure of strong alternative currents using simple ring-shaped current transformers, like current clamps.
Two weeks ago, we presented an improvement of the Yoctopuce API enabling you to easily observe what happens on a serial line with a callback. Obviously, we hurried to integrate this in our ModbusTool application, which is now able to display the data that go through a Modbus line.
A few months ago, we wrote a post explaining how to drive the opening of Velux skylight windows with a KLF 200 interface. This week, we are going to improve this system by adding a control panel to it.
One of the specificities of Yoctopuce serial interfaces is their capacity to listen to messages circulating on an existing line in both directions to reconstruct the communications. Most of the time, it's used to understand how an undocumented protocol works, but you can also use this function in production to monitor and measure an existing system. That's why we have recently added a new API making it easy to integrate serial snooping into your projects.
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