The reader initializes the communication. The RF industry is activated, and several other reduced stage commands are exchanged to detect a suitable card. 1x GND 3V3 (P2 with 2 pins 2.54mm) connector can be employed to energy externally the WCH CH569 MCU (it is suggested to remove the P4/SHUNT in https://hydrabus52738.bloggin-ads.com/56365914/details-fiction-and-hydrabus