Welcome to my PCB business cards, a collection of functional devices showcasing my passion for embedded electronics and microcontrollers. Each card is a unique project demonstrating a specific concept or technology.
- Simple, battery-powered USB 2.0 and 3.0 cable tester
- Protected by Schottky diodes and a polyfuse
- Indicates test results with 0603 green LEDs
- Temperature-controlled hotplate for perfect tea temperature
- Compact design, precise temperature control, and user-friendly interface
- 8-button macro pad for productivity shortcuts and macros
- Implemented as a USB HID keyboard and HID media consumer controller
- 7x9 RGB matrix display powered by an ESP32C3 microcontroller
- Controlled from any web browser using WLED firmware
Support my work by purchasing a custom CO2 sensor on my website or hiring me for freelance Embedded Electronics projects: https://www.keastudios.co.nz.