
Figure 12: TTL Select
Note that this device uses signal levels from 0V to + 5V on the TTL setting.
Table 6: RS-232 Pinout
Pin Number Direction Description LCD Host
2 Data from LCD Data out (LCD) Tx Rx
3 Data to LCD Data in (LCD) Rx Tx
5 - Ground gnd gnd
For TTL communication via the 4 pin connector, please see the figure and table below:
Figure 13: Power Connector
Matrix Orbital PK202-25 11
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