BenchVolt PD is an open-source, USB Power Delivery-based bench power supply capable of delivering up to 100 W through multiple DC-DC converters and LDO channels. It provides adjustable and programmable outputs(waveform capable), current monitoring, and real-time voltage/current display — all powered directly from a USB-C PD adapter.

This is the development kit using the Esp32-Wrover microcontroller that I designed.

KVM-GO is officially shipping to the US, supporting VGA, DP, and HDMI versions. We are also launching the Openterface iPad app, which transforms your tablet into a portable KVM console for managing headless servers and BIOS settings. Every box includes the full hardware kit and a bonus Gibby sticker.

Keychain with 4 ws2812b-2020 LEDs, MCU ch32v003 and USB

I bet you wouldn’t have guessed this Colorful Carousel was made entirely using PCBs

its good

Headphone amplifier published in “Transistor Gijutsu” magazine

I was part of a team that built an automated marble sorting and lifting machine with three unique mechanisms. My specific role was to architect and execute the entire electronic nervous system. I solo-designed and fabricated a custom PCB that integrated dual microcontrollers, motor drivers, Bluetooth, and robust power regulation. My parallel-circuit design guaranteed no single component failure could take down the whole system. I delivered a professional, reliable control hub that brought our team's mechanical designs to life

R4TKN Deauther transforms the Ai-Thinker BW16 (RTL8720DN) into a dual-band 2.4/5 GHz Wi-Fi security lab tool, simulating disconnection events to audit and harden networks—featuring a portable, TFT-driven UI for authorized testing only.

The Linear Keyboard provides the amazing feel of a full mechanical keyboard and allows you to take its small form factor on the go!

In this tutorial I am going to create a chaser circuit that can drive 20 or more LEDs using 555 timer IC and CD4017 decade counter.

PCB Reverse enginnering : 2 layers , pcb2