Seamlessly stream 4K 30 fps video from external HDMI sources to USB hosts over USB-C

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650 V 400 A six-cell automotive qualified IGBT module

650 V 200 A six-cell automotive qualified IGBT module

Integrated Turnkey Reference Design for Rotary Refrigerator Compressor Drive

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High-Efficiency 65W USB-C Dual-Port Charger Reference Design with ATQ Transformer

100W USB-C dual-port charger reference design with single-stage PFC

170 W AC-DC reference design with input voltage range for e-bike and power tool battery chargers

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LibreTimeBase: Rubidium clock control board

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Green Smart BMS: Intelligent Battery Management System

The project originated when the author purchased an electric motorcycle for his daughter and replaced its original lead-acid gel battery with a lithium battery pack. Due to the lack of smart, cheap and easy to configure lithium battery management systems on the market, the author decided to make one himself.

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Quadrant: Gesture audio adjustment based on 4 TOF sensors

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RP2040 based ohmmeter with audio and ribbon feedback

Open ECU control module

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Open source power supply EEZ BB3: based on stm32 H7 main control board, voltage supports 0-80V, current 0-10A

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Bus Pirate 5: Open source serial, SPI, I2C and 1-Wire development tools

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A low-profile version of full-featured software radio based on Raspberry Pi Pico (fully open source + detailed explanation)

With just a Raspberry Pi Pico, an analog switch and an op amp, you can build a powerful SDR receiver covering the LW, MW and SW bands. Capable of receiving signals from halfway around the world.

Schematic PCB

Open source USB PD powered mini SMD reflow heating plate

A low-cost PD-powered reflow soldering heating plate that uses a cermet heater (MCH) instead of a PCB heating plate for heating. It has a USB Type-C input port and can be powered by a 60W (65W) PD power supply.

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RDR-641 - 40 W variable output (3 V to 8 V, 5 A; 8 V – 20 V constant power) power supply using InnoSwitch3-Pro and Microchip PIC16F18325 microcontroller

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DER-350 - 20 W Isolated, Triac Dimmable, LED Driver with Power Factor Correction (>0.98)

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9.5 W Isolated Flyback, Triac Dimmable, Power Factor Correction (>0.96) LED Driver Designed Using LYTSwitchTM LYT4314E

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RDR-347 - 12.6 W, TRIAC Dimmable, Isolated Flyback, Power Factor Corrected (>0.97) LED Driver

Schematic PCB