SI522 (ultra-low power 13.56M chip) replaces rc522 and is fully compatible with PIN to PIN. SI522 is a member of the highly integrated card reader and writer series chips used in 13.56MHz contactless
I have just learned it for two days. I need to display the external signal on the digital tube, but I don’t know how to connect it. :surrender::surrender::surrender:
The origins of building intelligence began with the automatic thermostat , the first electronic building control. “ In the past, people would tap on the pipes to alert the management to turn up the he