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HARDWARE / ELECTRICAL

THE ELECTRICAL SYSTEM.

The NeoRacer runs a single hierarchical power path. One 3S LiPo feeds the power-management module, and the module splits that into the rails every part needs: a regulated line to the Jetson, an line to the controller, and a 5 V USB bus to the sensors.

11.1 V · 3S in (XT60)DC5525 → JetsonXT30 → controllerUSB 2.0 → sensors

FIG. A / POWER + SIGNAL PATH

LiPo battery

11.1 V · 3S · XT60 out

Power-management module

distributes power · shared data hub

Jetson Orin Nano

DC5525

OSCORE controller

XT30

Sensors

5 V USB 2.0 bus

ESC + servo

driven · output

Encoder + RF receiver

read · input

The power-management module takes the battery's XT60 input and distributes it: DC5525 to the Jetson, XT30 to the controller, and a 5 V USB 2.0 bus to the sensors. Data rides the same hub; the controller drives the ESC and servo and reads the encoder and RF receiver.

01 / WHERE THE POWER GOES

THE FIVE RAILS.

Everything starts at the LiPo and fans out through the power-management module, which also handles overcurrent and overvoltage protection so a fault on one rail doesn't take the rest down.

Unit	Fed by	Notes
Power-management module	XT60 in	Takes the battery and distributes every rail below.
Jetson Orin Nano	DC5525 · 19 V	Host computer. The module adapts the pack to the Jetson input.
Controller (OSCORE)	XT30 · 5 V	The lower computer, from the module side output.
Sensors (LiDAR, camera)	USB 2.0 · 5 V	Power and data over the USB hub.
RF receiver	Controller I/O · 5 V	The 2.4 GHz receiver runs off the controller.

02 / THE DISTRIBUTION BOARD

POWER-MANAGEMENT MODULE.

Interface	Type	Connects to	Notes
XT60 (main in)	Power inlet	The LiPo battery	Main supply. Watch polarity: red positive, black negative.
DC output	Power outlet	Jetson Orin Nano	DC5525 plug.
XT30 (side out)	Power outlet	Controller	5 V regulated output.
USB hub power	Power outlet	Sensor bus	5 V USB-standard supply.

//Connection order

Seat the battery's XT60 into the module's main input, polarity correct (red +, black −).

Run the DC5525 cable from the module's DC output to the Jetson's DC input.

Run the XT30 cable from the module's side output to the controller's XT30 input.

Connect the Jetson's USB 3.2 downstream port to the USB 2.0 hub with a USB-A to USB-C cable.

Fan the hub's USB 2.0 ports out to the LiDAR, camera, and controller data ports.

Recheck every connector is fully seated, with no play.

03 / BEFORE THE BATTERY GOES IN

PRE-POWER-ON CHECKS.

01

Battery

At least 3 bars, and no swelling.

Short-press the pack's indicator: below 3 bars, charge before you run. Check the case for swelling, cracks, or leakage, and the XT60 plug for charring, deformation, or oxidised pins. Any of those means stop and contact support.

02

Cables

Intact, seated, no heat marks.

Every power lead should be undamaged, with no crush marks, aging, or exposed copper. Confirm each connector is fully seated and that the battery is fixed down so vibration can't shake a lead loose mid-run.

03

Appearance

Indicators normal, nothing warm or smelly.

The Jetson power indicator should be steady green and the OSCORE controller should be cool with no odour. Sensors fixed and their USB connectors straight, RF antenna intact and pointed the right way.

04

Environment

Clear space, switch off, receiver bound.

Nothing around the car that an accidental start could hit. The power switch is off, and the transmitter is charged and bound to the receiver before any power reaches the wheels.

04 / IN THE RIGHT ORDER

POWER ON, POWER OFF.

The order matters at both ends. Bringing the rails up cleanly lets the Jetson self-check before anything moves, and shutting down in order keeps the file system and the ROS graph intact.

//Power-on

Confirm the pre-power-on checks above are done.
Turn on the power-management module's main switch.
Watch the Jetson power indicator come up (the controller lights with it).
Wait ~30 to 60 s for the Jetson to finish booting.
Start the driver from the Jetson terminal (below), then the car is in standby for RC or ROS control.

bash
# On the car, once it has finished booting.
teleop                 # brings up the full driver stack

//Power-off

Bring the car to a stop with no task running.
Flip CH7 to the middle (RC mode) to cut autonomous control.
Close host-side apps (RViz, navigation, SLAM).
Stop the driver with Ctrl+C, then shut down the Jetson.
Once the Jetson indicator is out, switch off the module and unplug the battery. Wait 30 s before moving it.

bash
# Shut the Jetson down cleanly before cutting power.
sudo shutdown -h now

05 / THE NUMBERS

ELECTRICAL PARAMETERS.

Parameter	Value	Notes
Pack voltage	11.1 V (3S)	Three LiPo cells, 3.7 V nominal each.
Pack capacity	5200 mAh	Reference pack. Any 4000 to 5500 mAh 3S works (battery not included).
Discharge rating	≥ 25C	Minimum. The reference pack is 50C. See Power.
Battery connector	XT60	Keyed pair, polarity-protected.
Host supply	DC 5 / 19 V	Via DC5525, adapted by the module.
Controller supply	DC 5 V	Via XT30 from the module.
Sensor supply	DC 5 V	Via the USB hub.
RF receiver supply	DC 5 V	Via the controller I/O.
Operating current	Load-dependent	Tracks total machine draw; peak follows the motor.

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