Connect a 3.3V serial scanner
VTAP50‑OEM readers have a 3.3V logic interface, which is available on the optional 12‑way expansion header (J2) and optional 12‑way FFC connector (J6). The scanner data can then be output on the USB virtual COM port.
Note: This option is only available on VTAP50‑OEM readers
Refer to the VTAP50-OEM Integration Guide for information on wiring connections.
Use the same config.txt settings to set up the 3.3V logic interface as for RS‑232, which you'll find in General configuration to use serial scanner data.
Note: RS‑232 and 3.3V serial present as different physical interfaces but use the same serial UART, so only one of these physical connections can be used to connect a barcode/QR scanner.
Related reading:
