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Update 2

A project log for Long Range RC Research Rover

Long-Range RC Truck Project

elijah-radantElijah Radant 03/11/2025 at 21:460 Comments

The following Parts Arrived:

Speedybee F405W Flight Controller: Flashed with Ardurover firmware

Holybro SiK Telemetry Modules: procured from aliexpress - FTDI chipset - radios link, but no heartbeat detected. May be due to "unbranded" modules or mismatching firmware. Swapping for Holybro official branded telemetry modules.

MicroAir m10 ultra UBLOX gps: Does not power up when plugged in, tested other GPS module and it works. Believe this unit to be defective.

Hobbywing 10BL60 ESC: requires programming, led program card ordered

14t Pinion Gear

Lighting Harnesses

Still to arrive:

X8R reciever: first powered test can commence once receiver setup is complete

HobbyWing LED Program Card: needed to set ESC params

HolyBro SiK Telemetry Modules: replacement units

Summary:

The project has officially entered integration hell. Two main parts of the planned configuration are not working: SiK and GPS, both of which are critical to this project. The SiK modules connect to one another, but I am unable to get data in mission planner. No heartbeat is detected, and I cannot load the settings on the radios. It's possible they have corrupted bootloaders, mismatched firmware, etc. For the time being I am connecting to the FC via USB to set configuration parameters. I am continuing to adjust failsafes, RTH modes, etc while more parts arrive.

Regarding the body, prototype body parts have been printed and are being fitted. Carbon fiber tubing used to pin all body sections together are on the way. Additional consideration is needed to separate the FC/receiver/other electronics into water resistant compartments on either side of the battery bay. The ESC is waterproof and is going in the forward hatch of the body, directly above the steering servo. There is a 40mm firewall fan between the forward hatch between the wheels and the main electronics and battery compartment just forward of the back wheels. There is an additional 40mm fan modeled into the top of the forward hatch, but this may not be needed. TPU seals and gaskets are being designed for areas where joined parts may allow for dust or moisture entry.

While I have experience setting up RC vehicles, I am wholly unfamiliar with SiK/Mavlink and expect to spend most time resolving this issue before I move too far forward as it is a base requirement of the project. In the meantime, I will program the ESC, bind the receiver to transmitter, set throttle min/max, and test output channels and manual vehicle control.

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