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Reference Design For A GPIO-based Parallel Bi-Directional Bus

Student: Pranav Kumar
Mentors: Andrew Henderson, Zubeen Tolani


Create a hardware/software design will incorporate shift registers (and potentially logic level converter solutions as appropriate) to allow hardware to communicate with hardware via a parallel, bi-directional bus.

Tasks Done

I have completed the task required as described on the ideas page, and created a pull request, as listed here

About Me

IRC: pranav_kumar
E-Linux Username: pranav083
School: UIET,Panjab University,Chandigarh
Country: IndiaIndia
Primary language: English,Hindi
Typical work hours: 9:30 - 23:00 IST GMT/EST/PST to Ist Adjusted Time
Previous GSoC participation: Skills: C,Python,ROS,OpenCV,Embeddded C,Electronics Prototying

Tools(proficient) : Git,Linux

Experience : C,Python,Java,HTML,CSS,JavaScript,Arduino

Hardware Skills: Atmel chip, Raspberry Pi, ICs, Circuit Designing, I2C

Reference Design For A GPIO-based Parallel Bi-Directional Bus

Project name: Reference Design For A GPIO-based Parallel Bi-Directional Bus


project overview

Detailed Description

Progress till now

First of all, I studied the internal mapping of the PRU in the pocket Beagle I am able to interface swift register with the pocketBeagle And working


Community Bonding Period

Week 1 : Milestone #1
Week 2 : Milestone #2
Week 3 : Milestone #3
Week 4 : Milestone #4
Week 5 : Milestone #5
Week 6 : Milestone #6
Week 7 : Milestone #7
Week 8 : Milestone #8
Week 9 : Milestone #9
Week 10 : Milestone #10
Week 11 : Milestone #11
Week 12 : Milestone #12
Week 13 : Milestone #13
Week 14 : Milestone #14

Final Goals:


As I am from Electronics background and always involved in creating in making projects related to micro-controller.I like to learn new things in my day to day life. I have made a 3D printer that works both as a 2D printer and 3D printer using the hardware modules of a 3d printer and Open Source Marlin Firmware. Worked on finite state machines using embedded system. And I take sessions in our college to spread knowledge among ourself with common interests. I love to contribute to open source where people can help each and clearing one another problems.

Previous Contributions to Open-Source

  • Making a lighter and less complex multifunctional line Following algorithm using FSM that is easy to implement and build.
  • Lead the team of NGO making projects for school going children with full DIY guide and Documentation Github.
  • Making a short script for login into our university wifi Github Link.
  • Take the initiative to have an Open-Source Community section of India on OSRF official ROS-Discourse so that people can openly know to each other.

Contributions to this project

There was no upstream repository for this project. So, I make one and started contributing to it by starting from interfacing shift register github. And for this project I have created another repository on GitHub


  • Participated in Hacktober fest 2018.
  • Suggesting an efficient prototype of Harvester at eYIC, IIT Bombay(Country level competition)Docs.
  • Won PocketBeagle from Mouser electronics event at IIT Roorkee, India.


As I will be on my break period from my college after semesters exam. So, I can devote my full time on this project and there will be enough time for me to learn, explore and implement new things and successfully able to complete this project on time.


It will largely impact the way people who want multiple inputs or output capability in their projects

What community members speak

After making this project for the community, I am looking forward to working more with the hardware-software integrated project and want to help pocketbeagle to made easy to use in projects for newbies.

Future Contributions

As always I will like to contribute further in the open source community and spread my word to my local community and spreading the easy of making project using beaglebone family and its advantages over other controllers, And the way people help each other especially.