Circuit Design and Simulation
Marathon using eSim

Important Dates
Registration: 21 May 2021 - 15 June 2021
Marathon Launch : 17 June 2021

What is Circuit Design and Simulation Marathon?

The purpose of Circuit Design and Simulation Marathon using eSim is to provide an open platform to students to innovate, create state-of-the-art design and integrate it into real-world application. This marathon is based on eSim, an open source EDA tool for circuit design, simulation and PCB design, developed by FOSSEE, IIT Bombay. eSim is an open source alternative to PSpice, Orcad, etc. 

FOSSEE, IIT Bombay, along with VLSI System Design Corp.Pvt. Ltd is organising this online Circuit Design and Simulation Marathon.

Timeline (Tentative)

Date Activity Description Video Links
3 June 2021 Introductory webinar by the eSim and VSD teams

The eSim and VSD teams will introduce to the structure of the marathon

17 June 2021 Launch of Marathon
Webinar on Introduction to eSim and Sky130 Tec
The eSim and VSD teams will introduce the eSim software and Sky130 Tech tools Join meeting: Here
17-20 June 2021 Literature Survey Participants need to research the topic available in papers/ journals on the web How to do Literature Survey?
21 June 2021 Report submission Participants need to submit the research conclusion and plan on circuit implementation in the prescribed format Uploading the Literature Survey Report
22-27 June 2021 Implementation Participants need to design, characterise and simulate using eSim and sky130 Installing and using eSim
28-30 June 2021 Submission and documentation Participants need to upload the reference and actual circuit/waveform using eSim pre-defined template Uploading the Final Design Report

Who can participate?

Registration is free of cost and open ONLY to individuals, not to teams or groups. The participant should have a good knowledge of basic electronics.

Problem Statement

  1. In this marathon, the participants will design and simulate circuits in eSim from a pool of choices. These would be split into circuit categories:
    1. Digital domain
    2. Analog domain
    3. Mixed-signal domain
  2. The add-on factor here would be that while simulating the circuits using eSim, the participants will be guided in using the SkyWater 130nm PDK to analyse the results of their designs.
  3. The participants will also have the advantage of learning these technologies in detail.

Rules and Regulations

  1. The circuit design and simulation has to be done ONLY using eSim.
  2. eSim is the official software for this Marathon. All submissions have to be done using eSim only. Submissions in any other software will be disqualified.
  3. This marathon is open ONLY to individuals. We shall not accept team or group registration/submissions.
  4. Any participant found to be indulging in any form of malpractice will be immediately disqualified.
  5. The decision of the review committee and the organizers in declaring the results will be final. No queries in this regard will be entertained.


System Requirements to run eSim

The minimum requirements for running eSim are the following:

  • For Windows: Windows 10: 64-bit, at least 4GB free space, minimum of 2GB RAM
  • For Linux OS: 64-bit x86 Ubuntu 16.04/18.04/20.04 LTS, at least 4GB disk space, minimum of 2GB RAM


  1. Start learning eSim right away using the Spoken Tutorials, available here
  2. Submitting one good entry has higher chances of getting shortlisted, compared to submitting multiple entries.


  • e-Certificate on successful completion
  • Recognition on the FOSSEE Website
  • Exposure to technologies like SKYWater 130nm PDK
  • Improved internship/job opportunities


Interested people may register using this Google Form.


Scan this QR Code to register


Please download and share this poster.

Partners and Organisers

Contact Us

For any queries please email contact-esim[at]fossee[dot]in