When drilling holes in a printed circuit board (PCB) for electronic components, specific drill bits called PCB drill bits or PCB drills are used. Thes..
When drilling holes in a printed circuit board (PCB) for electronic components, specific drill bits called PCB drill bits or PCB drills are used. Thes..
This is the R307 Optical Fingerprint
Reader Sensor Module. R307 fingerprint module is a fingerprint sensor
with a TTL UART interface for direct connections to micro-controller UART
or to PC through MAX232 / USB-Serial adapter. The user can store the
fingerprint data in the module and can con..