Matrix Orbital VFD2041 Legacy - Manual (Page 11)

Figure 10: I 2 C
Connector pinout is as follows;
Figure 11: Power Connector
Table 4: Connector Pinout
Pin 4 Ground
Pin 3 Rx
Pin 2 Tx
Pin 1 Vdc
2.2.3 TTL communications
The display can be talked to at TTL (logic 0V to +5V) levels. Three modifications have to be made. This
will allow TTL communications through the 4-pin SIP header or the DB-9 connector.
Matrix Orbital VFD2041 8