All further development will continue using this setup rather than the breadboard that is far from looking like the final shape and is kinda detached from the reality. But the breadboard did serve as the initial testing and developing stage.
There are a few missing soldering points and connections to be made before I can start working with code. In fact, if all is good, there will be no more soldering job left, pure coding and debugging using the real model. I am super excited about that one. There are some more decisions to be made upon testing how much to run the motors to turn and the speed. I am still thinking weather to leave the motors as they are or to swap them with stepper motors for higher precision motion.
Here is the list of TODOs:
Soldering the headlights. I was looking for white LEDs online before I discovered a piece of old LED strip with perfectly good LEDs on them. I cut out two and installed in front of the car. I may have to redo the 3D model to allow more simple installation for the cutout LED strips later.
Soldering a resistor and the wires for the headlights. They are in paraller and only one light has a resistor. I think, I can use the same resistor for both. I must redo the soldering either way.
Battery. Final version of iGZR will not have direct access to the arduino USB, rather there will be one for the battery charger circuit. Also, I am thinking of connecting the battery now and try to run the vehicle on the battery too. I will have to switch off the battery and suspend the vehicle wheels during debugging though. I am not sure what happens if the battery power and USB power are connected at the same time. I believe there is an internal switch on Arduino. I don`t want to test that.
As you can see, there is a gap in the "drivetrain" section. The housing came too short and the wheels hit the bottom of the main body. I solved the issue by soldering piece of failed PLA plastic to extend the joining part. I try to salvage as much of the failed prints as I can, so I keep all that junk in a bag