The Franzininho DIY is a DIY board developed in 2017 to encourage people to assemble their own Arduino boards and have the first contact with electronics. The board is based on Arduino Gemma and Digispark hardware and can be programmed in the Arduino IDE after assembled.



Hardware


Based on the ATtiny85 microcontroller, the Franininho DIY has simple hardware designed in a way that allows people to assemble and even make their own boards at home.


The following is the Franzininho DIY circuit:



As shown in the schematic above the Franzininho DIY has lean hardware. To facilitate the hand made production, the board was developed in the single face layout and the components are all PTHs.


The following is the PCB layout of the current version:




The first version of the board was made with the USB connector drawn on the board. But due some fabrication problems, I decided to change for a PTH USB connector.





The following is the 3D model of the current version:


The board has two LEDs, one to indicate power (ON) and one for general use, connected to the PB1 pin of the ATtiny85 (this LED that is generally used for the blink).



There is also a RESET button to make it easier to enter in bootloader mode.





Pinout

All ATtiny85 pins are available in the I/ s header. The following figure shows the pins and table, their respective functions:

Several Franzininho DIY have already been assembled in Brazil, impacting thousands of people. We encourage people to build their own projects and share with others:










The project was published in CC-BY-SA 4.0 license and is available on GitHub for anyone making their own.

We have extensive documentation (only in Portuguese) available and done in a collaborative way by the community.

Jun 14,2019
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    • Omer Faruk Ucar from TURKEY
      Founder of the project ‘Lezzetli Robot Tarifleri’ In the frame of this project he produces Turkish contents about electronics/software and serves it to people for free. He produced many jammer devices mostly drone dropper weapons while working in electronic defense industry. He gave lessons to teachers about software and electronics in a program which supported by the government. And now he is working as a hardware engineer on SCADA systems syber security.
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      NOTE: If you have a project that I don't think is for beginners (or I don't understand what it is/lacks documentation) - you'll automatically get a low score from me even though your project is really cool. Sorry! ABOUT: Author of Electronics For Kids. Creator of Ohmify.com and the electronics blog build-electronic-circuits.com.
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    • Ever since I was a kid, I love tinkering with anything that involves energy from toys to cellphones. I love designing and creating projects that could be innovative with the use of electronics. I was also appointed team leader of the University of Sto. Tomas team for the Shell Eco-marathon Philippines Competition in 2018.
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      My name is José Ramón Pueyo, I live in Spain. For more than 40 years he has worked in the radio communication sector, mainly with RF equipment and developing control and monitoring systems.Five years ago I opened a channel on YouTube (J_RPM) in order to share some developments and divulge technical information.
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