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Brand new interactions and interfaces
Smooth support for design sizes of over 3W
devices or 10W pads
More rigorous design constraints, more
standardized processes
For enterprises, more professional users
Easy to use and quick to get started
The process supports design scales of 300
devices or 1000 pads
Supports simple circuit simulation
For students, teachers, creators
PRO Keyboard Business Card
Mode:
The project aims to combine a business card with a functional USB-C capacitive touch keyboard on a PCB. The initial idea focused on using microcontrollers like the RP2040, Atmega32u, and STM32F103, but these lacked native capacitive touch functionality. After further research, the CH32V303 was selected due to its built-in USB 2.0 and 16 capacitive touch channels, capable of supporting up to 48 keys through multiplexing. However, to reduce costs, the project later switched to the CH582M, which also has capacitive touch capabilities, USB support, and even includes Bluetooth functionality, potentially allowing wireless communication.
The goal is to keep the design as affordable as possible while ensuring it remains a unique, functional business card. The final device would serve as a 40% keyboard and be a demonstration of both electronic engineering skills and the practical use of capacitive touch technology.
Capacitive Touch Keyboard Business Card | Hackaday.io for project Logs
&
RicardoX2X/Business_card (github.com) for the firmware.
Project Overview Video:
PCB Cartão de Visita & Teclado Touch - Visão Global do Projeto #pcbway (youtube.com)
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