RC522 RFID Reader Module Serial 13.56 MHz Light dependent resistor so you only need 8

so you only need 8 microcontroller pins (4-columns and 4-rows) to scan through the pad

MG90s steering gear

Continuous Charge Current Up to 500mA

Process: high-quality green oil spray tin process

Wide operating temperature range: –40°C to +85°C

RC522 RFID Reader Module Serial 13.56 MHz Light dependent resistor so you only need 8Features: MF RC522 is applied to 13. 56 MHz contactless card reader chip of a family member of high level of integration., For "Three Tables" application has introduced a low voltage, low cost, small size and non Contact chip card reader is a good choice for smart meters and hand held portable devices developed. MF RC522 using advanced modulation and demodulation concept fully integrated in all types of passive methods 13. 56 MHz contactless