October 1, 2019

Hands-on Training on 3D printing and PCB design

By MVJCE

Two-day Hands-on Training on 3D Printing and PCB Design under CoE in Robotics and Industrial Automation

The Department of Electronics and Communication Engineering organized a Two-day Hands-on training on 3D Printing and PCB Design, sponsored by IEEE Student Chapter, Bangalore section. In this training, students trained on 3D CAD modelling, using 3D printer, CAD design for electronic circuits, and hands-on on PCB prototype machine. This training was conducted by Mr. Bhanuteja G (AP/ECE) and Ms. Varsha P H (AP/ECE). 118 students from various disciplines participated in this training. The training was conducted in 4 batches, with 30 students in each batch, on different dates. The training began with an explanation about the importance of CAD modelling, and the difference between model, prototype and products.

The First batch training was conducted on 29th and 30th August 2019. This training was divided into two sessions – in the first session, Mr. Bhanuteja G explained to the trainees the difference between subtractive manufacturing and additive manufacturing, the types of 3D printing, 3D printing materials and applications of 3D models.

Then, he introduced the students to the TINKERCAD online platform to design 3D model and generate .stl files. The students understood how a 3D model is designed and the significance of converting .stl to .gcode format.

At the end of the session, the students used the Julia extended 3D printer available in Robolab, to print 3D models.

The second session training was on designing a PCB for mobile charger circuit. During the morning session, Ms. Varsha P H trained the students on designing a circuit and performing analysis using CAD software. Once the circuit analysis was done, students learnt how to convert a circuit to PCB layout and generate gerber files.

Later, Mr. Bhanuteja explained why gerber files need to be converted to .nc formats. He also listed out the PCB design steps using Nvis 72 PCB prototype machine.

The students then segregated themselves into teams, and designed PCB, placed components on PCB, and soldered them to form a working PCB. At the end of the day, the students checked the working condition of the circuit, by the continuity test and by charging their mobile phones.

Outcome

  • Students understood the basics of CAD design for 3D modelling and PCB design.
  • They learnt the usage of 3D printer, importance of modelling, PCB design and circuit analysis.
  • They got clarity on the difference between subtractive manufacturing and additive manufacturing.
  • The students learnt about the design rules to be followed for designing any circuit, and how to place components in PCB.