Hardware projects tagged jlcpcb

80% Hotswappable split keyboard powered by the Pi Pico, containing OLED screens, rotary encoders, macro keys, and a layout that can snap together to form a full 80% keyboard.

Without using a USB-C PD controller chip, handling communication over the USB cable, USB-C standard allows to get 5V up to 3A through a hardware availability detection. Here I show a design developed on KiCad and made through JLCPCB, powering from a USB-PD source and providing 5V and 3.3 (through a step-down converter) up to 3A.

KiCAD project of PCB that reads data from the Aidon electricity meter's HAN port and converts it to an RS485 bus, enabling integration with home automation systems, data loggers, and industrial equipment.

Kicad project of an STM32-based board climate controller utilizing an RTC module for time-scheduled environmental reading of temperature/humidity with SHT30 sensor and optional small relay for control.

This is a small module that handles the USB PD negotiation and simply outputs a specific DC voltage.