Better BT-1 - 5.1.3 TTL Connector; 5.2 USB Port; 5.2.1 J2 Power Supply Connector; 5.2.2 CN3 USB;MINID Connector

BT-1 user manual
Page 10 of 70
5.1.3 TTL connector
J3
Us
er side matching connector
Molex 51021 Series
（
female
）
Molex, 53047 Series 5 contacts
（
male
）
Contacts: 50079/50058
Pin number
Signal name
1
2
3
4
5
GND
Transmit data(Txd, printer output)
Receive data(Rxd, printer input)
CTS/DSR(printer input)
RTS/DTR(printer
output)
5.2 USB port
5.2.1 J2 Power supply connector
Pin number Signal name
1
2
3
GND
GND
V bat
V bat
4
5.2.2 CN3 USB /MINID connector
Pin number Signal name
1
2
3
4
VUSB
D-
D+
NC
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