Barcode Scanner to USB ttl board
Barcode Scanner to USB ttl board. The product is a USB Host which accepts any USB Barcode Scanner at its USB port and decodes the barcode reading. The data is output as serial TTL UART at 9600 baud rate for easy interfacing with various applications. The output is suitable for 3V or 5V level microcontroller applications.
Features:
- Easy to Use with variety of barcode scanners/readers (including wireless barcode scanners)
- Barcode status LEDs supported
- Multicolor Status LEDs for Error, Activity and Power
- Simple output can work with any type of microcontroller
- Also accepts Wireless Barcode also by inserting its RF receiver into USB host port
Pinouts
- TX-OUT – Transmit output, usually goes to your microcontroller receive pin RXD
- 5V – Regulated 5V power input
- GND – Common Ground
- DET – Idle Low, Goes High when barcode activity happens. Goes low again after data transfer at TX pin is finished. Useful for input to external microcontroller for polling or interrupt to process the data from board.
Note: RX-IN pin and other pins are not used in this application, leave it floating. Below you can see, we have provided holes for mounting header of 2.54mm pitch if required.
Interfacing UART Serial Data by various methods
RS232 Interfacing
To Interfacing with PC’s Serial port, which has RS232 level( /-12V) the output from board needs to be converted to RS232 level by using MAX232 IC. Then the data is connected to PC’s RS232 port. Board MAX232 will need external 5V power supply and ground has to be common between both boards.
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