EOLRC - Build Guide

Note that this is not a build guide of the car itself. Rather, how to integrate the 3D printed parts with the plane parts for your own projects.

Printing the parts

The parts can be found in the plans GitHub repo.

I recommend printing the All_parts_arranged.stl

I used an Ultimaker 3 to print the parts with eSun PLA+ at a 0.2mm layer height at 215C, 35% infill, along with a PETG brim for easy cleanup. They were printed relatively slow at 60mm/s.

The print took about an hour and a half and used under 20 grams of filament.

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3D printed parts fresh off the printer

Bill of parts

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Parts laid out

Bill of tools

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Tools laid out

Let's put the parts together damn it!

Step 1 - Binding the receiver

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Sample binding circuit

Make a new model with zero trims. Check with your manufacturer's instructions on binding the radio with the receiver.

We'll need this for a later step.

Step 2 - Attaching the motor to axle adapter to the motor

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Parts/Tools

You can use additional tools for this, but be careful to not misshape the motor bell. I totally haven't done that before.

Steps

  1. Screw on the motor to axle adapter onto the motor while making sure that it is screwed all the way down.
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Step 3 - Affixing the motor to the motor mount

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Parts/Tools

Steps

  1. Attach the motor to the motor mount using the screws
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Step 4 - Mounting the servo to the servo holder

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Parts/Tools

Steps

  1. Push the servo into the mount until it is flush
  2. Screw in the screws to secure the Servo
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Step 5 - Securing the servo arm to the servo

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Parts/Tools

Steps

  1. Plug the battery into the electronic speed controller
  2. Power on the radio receiver using the electronic speed controller
  3. Plug the servo wire into the second channel of the speed controller
  4. Turn on the radio controller, it should connect to the radio receiver
  5. Test that the servo works by moving the sticks on the controller
  6. While leaving the sticks of the radio centered, line up the servo arm parallel to the long side of the servo mount and screw it in. (This is so that the servo arm is centered)
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Step 6 - Fixing the AIO FPV camera to the camera mount

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Parts/Tools

Steps

  1. (Optional) Put hot glue inside the camera mount. This will secure the camera much more than just pushing it in and having it stay attached due to friction.
  2. Carefully yet forcefully push the camera into the Camera mount. The camera lens should be flush with the exterior of the mount.
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Making sure that the whole system works

These gifs were recorded through the FPV camera, so at least I know that that works.

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Moving the controller's sticks

With everything properly wired up, it was time to test all the parts.

When I moved the left stick of the controller vertically, the motor span up. When I moved the right stick on the controller horizontally, the servo turned.

If you want to reverse the motor direction, just swap any two of the three motor wires

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Servo and motor responding to my inputs

What next?

Congratulations, you're finally done. Now give yourself a big pat on the back

Let your imagination run wild! As they say: the sky is the limit!

Here's what I built using these parts.

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