ARK Pixhawk Payload Bus Breakout
Pixhawk Payload Bus to Pixhawk-standard JST-GH, with a protected 5 V peripheral rail.
The ARK Pixhawk Payload Bus Breakout fans the 30-pin Payload Bus out to individually keyed Pixhawk-standard JST-GH connectors. UART4/I2C3, CAN, Ethernet, USB, and GPIO each get their own connector, so a payload can be wired to an ARK carrier without a custom harness.
A 5 V supply enters on a 6-pin Molex Pico-Clasp using the Pixhawk power-module pinout. An onboard TI BQ24315 protection switch derives the VDD_5V_PERIPH rail with a 1.5 A current limit, overvoltage protection, and a fault flag, and is gated by the autopilot over VDD_5V_PERIPH_nEN.
Connectors
J4
30-pin, 0.5 mm pitch FFC
Payload Bus
J3
6-pin Molex Pico-Clasp
5 V input and I2C3
J1
6-pin JST-GH
UART4 / I2C3
J2
4-pin JST-GH
CAN
J5
4-pin JST-GH
Ethernet
J6
4-pin JST-GH
USB
J7
7-pin JST-GH
GPIO
Specifications
Supply voltage
5 V (J3)
Peripheral rail
VDD_5V_PERIPH, 1.5 A current limit
Rail enable
VDD_5V_PERIPH_nEN (active low)
Protection
Overvoltage, overcurrent, fault flag
Signal logic level
3.3 V
Operating temperature
−25 °C to +85 °C
Dimensions
34.25 × 18.50 × 5.81 mm
Weight
3.5 g
PCB
2-layer FR-4, 1.61 mm, ENIG
Operating temperature is limited by the JST-GH connectors; all other components are rated wider.
Power
VDD_5V_PERIPH is shared by J1, J2, and J7 and is limited to 1.5 A in total. J5 and J6 carry no supply rail — VBUS on J6 is passed through directly from Payload Bus pin 24 and is not switched or protected on this board.
Test points: TP1 = VDD_5V_HIGHPOWER_nEN, TP2 = VDD_5V_PERIPH, TP3 = FAULT (open drain).
Included
30-pin, 0.5 mm pitch, 150 mm FFC cable.
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