Close

All Knobo Iterations

A project log for Knobo

An intuitive and compact device that helps the visually impaired learn braille.

gary-pengGary Peng 08/25/2019 at 10:230 Comments

Knobo v1.0 (Made on 6/3/18)

My first time designing and manufacturing a PCB. It was running on a Teensy 2.0 with Teensyduino firmware.

Knobo v2.0 

Knobo now uses SMT components and a Atmega32u4 microcontroller.

The PCB of Knobo v2.0 didn't work due to some design flaws :( 

It was also my first time doing SMD soldering, It took me 3 tries and 3 wasted chips before I managed to solder the Atmega32u4.

Knobo v2.5

Removed one of the keys to make the whole thing more compact.

Discussions