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Layout and Connectors

Sensor ID-lookup

Sensor ID Sensor function Short name OC port IC voltage (high) Pull-down resistor
Sensor 0 UART 2 u2 oc7 2.7 - 5 V
Sensor 1 RS232 1 r1 oc7 4.6 - 5.7 V R33
Sensor 2 RS422 r4 oc4 2.7 - 5 V
Sensor 3 UART 3 u3 oc4 4.6 - 5.7 V R35
Sensor 4 UART 1 u1 oc4 2.7 - 5 V
Sensor 5 RS232 2 r2 oc4 4.6 - 5.7 V R31
Sensor 6 SPI 1 s1 oc2 2.7 - 5 V
Sensor 7 SPI 2 s2 oc1 2.7 - 3.3 V
Sensor 8 IC only only 4.6 - 5.7 V R44
Ext. Trig trig oc3

To change the IC High voltage from 4.6 - 5.7 V to 2.7 - 3.3 V, remove the indicated pull-down resistor. Do not exceed the maximum of these voltages.

Connector info

The cables that are used with the primary ports of the SentiBoard are the Samtec Micro Mate™ S1SD-05 series. The breakout boards are designed to use the -L1 (Pin 1 to pin 1) configuration.

The connectors on the SentiBoard are the Samtec Micro Mate™ T1M-05-GF-DH.

Secondary connector

The 2-pin connectors on the SentiBoard are the Molex Micro-Lock Plus 205957-0271. This mates with the 204532-0201. Pin 1 is used as ground and Pin 2 is used as signal.

Sensor Ports Connector Specification

This sections shows the connector specification, as well as describing for sensor which signal SentiSystems have utilized in order to ensure proper synchronization of the payload's sensor data.

The names are as seen from the SentiBoard. That is, the TX is connected to the TX pin on the SentiBoard, and thus is the pin where the SentiBoard transmits data to the sensor. This should be connected to RX pin of the connected device.


SentiBoard UART Port


SentiBoard RS232 Port


SentiBoard RS422 Port


SentiBoard SPI Port