In this entry we will show how to design the DYOR robot, step by step, using QCAD.

Our proposal for DYOR robot is as shown:

We will start by using the template file and the CAD files with all components:

Let’s start by creating a polyline in the “Cut” laser” at the bottom right corner of the robot face:

polyline

40,0

@4,0

@0,30

@16,0

@0,120

@-56,0

@0,-120

@16,0

@0,-30

@4,0

The coordinates given in the next commands can be obtained from the proposed design to insert the different components.

import

“light_sensor.dxf”

24,0

import

“led_matrix.dxf”

16,50

import

“sonar.dxf”

9.5,124.5

import

“buzzer.dxf”

22.25,107.6

Now, let’s draw the robot base in the cutting layer:

polyline

65,0

@85,0

@0,150

@-85,0

@0,-150

In order to create holes for supporting the face, we will might consider the effective diameter of the laser, since it always removes part of the material. The thickness of the material is 3mm and the “nominal” length of each hole should be 24mm, however because of the efective laser diameter we will create a hole with dimensions 2.9×23.9mm^2:

polyline

95.55,98

@23.9,0

@0,2.9

@-23.9,0

@0,-2.9

Now, we can import the reminder of components:

import

“power_bank.dxf”

65,0

import

“arduino_io.dxf”

95,0

import

“bluetooth.dxf”

95,63

import

“servo.dxf”

65,115

import

“servo.dxf”

138.2,115

import

“caster_wheel.dxf”

88.4,118

Here you have the complete solution (layer names are different):