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.
We have to admit that working with Modbus devices is quite tedious: data are often binary encoded, and all the transactions are validated with a checksum, forcing you to write some code before being able to obtain any result. So, this week, we have a small present for customers using Yoctopuce modules to drive Modbus devices.
At Yoctopuce, we electronically send the information of all our packages, whether it is the content or the weight. For the later, we use a USB scale which is limited to a weight of 10 Kg. To overcome this limitation, we are going to test several types of scales, with a Yoctopuce sauce of course.
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