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| External | NR | PCB | |
|---|---|---|---|
Echo ping sonar | Green (RX) White (TX) | X10 | TS_P8 (TX2) TS_P7 (RX2) |
| Red Black | X9 | 5V GND | |
Pressure sensor | White (SDA) Green (SCL) | X8 | SDA SCL |
| Red Black | X7 | 5V GND | |
Stepper starboard | Green (A-) Green/White (A+) | X6 | DRV1 A2 DRV1 A1 |
| Blue/White (B+) Blue (B-) | X5 | DRV1 B1 DRV1 B2 | |
| Sensor starboard | OrangeRed BlackOrange/White | X4 | 3,3V TM_P9 |
Stepper port | Green (A-) Green/White (A+) | X3 | DRV2 A2 DRV2 A1 |
| Blue/White (B+) Blue (B-) | X2 | DRV2 B1 DRV2 B2 | |
| Sensor port | OrangeRed BlackOrange/White | X1 | 3,3V TM_P17 |
Mainboard gets power from "Dual Voltage supply - ROV"
The connection is located on the backside of the PCB.
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