Unemployment Diary of an Embedded Engineer, Day 9: The Ultimate Guide to RFID Multi-Antenna Switching! Relay, 4051, or RF-Specific Switch?
On the 9th day of being unemployed at home, a friend came to consult about the RFID (13.56MHZ) file management solution: the original design had a node board controlling 8 RF module boards. Although the cost of the RC522 has dropped to just a few dollars, there is no need to choose 8 RC522s for … Read more