Non-isolated step-down DC-DC converter

This reference design provides design guidance, data, and other content for multiple non-isolated step-down DC-DC converter power supplies. A variety of power supplies are optimized for a variety of outputs, loads, and board mounting areas.

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200W Active Clamp Forward DC-DC Converter

This reference design provides design guidance, data, and other content for a 200W active-clamp forward DC-DC converter using N-channel MOSFETs as clamp switches.

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IH induction cooker inverter circuit

This reference design provides design guidelines, data, and other content for an IH induction cooker inverter circuit based on voltage resonant soft switching.

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100W LLC DC-DC Converter

This reference design provides design guidelines, data, and more for a 100W LLC DC-DC converter using LLC resonance to achieve zero voltage switching.

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Power Multiplexer Circuit

In this reference design, a power multiplexer circuit with 2 inputs and 1 output is implemented on a small printed circuit board (PCB). Using MOSFET gate drive circuit ICs, eFuse ICs, Zener diodes, and small package MOSFETs selected from Toshiba's various product lines, an ideal diode with BBM and MBB switching is created.

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DC 300V input BLDC motor without Hall control circuit using TPD4204F

This reference design provides design guidelines, data, and other content for a DC 300V input BLDC motor Hall-less control circuit using intelligent power devices. It implements vector control using an MCU designed specifically for motor control.

Schematic PCB

1.6kW T-type three-level PFC power supply

This reference design provides design guidelines, data, and more for a 1.6kW AC-DC converter power supply using a T-type three-level power factor correction (PFC) circuit.

Schematic PCB

Application circuit of low-power operational amplifier TC75S102F

Application circuit of low-power operational amplifier TC75S102F suitable for various sensors. These application circuits can be used in devices requiring long battery life, IoT sensors, energy harvesting systems, and more.

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Open source C-mount lens USB industrial camera (source code, PCB, design and production instructions, etc.)

There are three boards in total, USB, FPGA and Sensor board. The FPGA board features a Lattice Crosslink NX LIFCL-40 and the required power regulator, and the USB board features a CYUSB3014 USB 3.0 SuperSpeed ​​controller.

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ESP32+RP2040 two-in-one design board (schematic and PCB)

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Using Raspberry Pi Pico, a miniature Mars probe with an arm (schematic, PCB, 3D printing, source code, etc.)

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Open source plankton monitoring and analysis equipment PlanktoScope

Plankton help remediate 30-50% of the world's carbon dioxide and provide the foundation for the global food chain, making up the world's largest daily movement of biomass as it travels across the ocean. The shapes, colors, and movements of these billions of creatures are as vast as the oceans that sustain them. Understanding plankton is crucial to understanding the world around us and our impact on it.

One obstacle to this type of research is the sheer size of the area to be explored, as well as limited resources for research fleets and specialized equipment. By developing a method to scale up high-quality visual exploration and documentation, we can greatly increase our understanding of the complex web of life around us, and how we in turn influence it.

Schematic PCB

Self-soldering PCB board design that supports reflow soldering (including PCB, schematic diagram, source code, etc.)

After the user manually solders a PCB board, this board becomes the reflow controller, and then this board can be used to control other boards for reflow soldering, because this board has been specially designed to open a heating layer.

Schematic PCB

USB portable programmable instrument (multifunctional USB power supply)

The core idea of ​​USB portable programmable instruments is to provide electronic engineers and enthusiasts with a series of low-cost, portable, network-enabled, programmable, and open source practical tools. The multifunctional USB power supply is the first of its kind and is expected to complement traditional adjustable regulated power supplies.

Schematic PCB

Desktop pen holder and calendar made with raspberry pi pico

In theory, it could connect to Google Calendar and show today's events while still being ongoing. Also on the list of features to be implemented is a switch or sensor that changes mode when the pen is removed, and buttons or touch controls for the user interface.

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Open source microcontroller 3D game graphics engine Pico3D

The current demonstration is running on RP2040, using one of the M0 cores as the GPU.

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Hardware circuit realizes SPI to Ethernet 10BASE-T

It introduces in detail how to build an SPI to 10BASE-T to realize network data sending and receiving. 10BASE-T uses two differential pairs: one for transmission and one for reception. Each pair is coupled through a transformer and the signals are differential and Manchester encoded. All schematics and diagrams are open.

Schematic PCB

Open source handheld vector network analyzer NanoVNA

NanoVNA is a small handheld vector network analyzer with LCD display and battery-powered portable device. This project aims to provide a useful RF gadget.
The measurement frequency range is 50KHz - 300MHz, and there are many derivatives based on this design on the Internet.

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Rodeostat: Potentiometer for electrochemistry, fully open source

It's all open source, and their documentation is very detailed, which is a rare learning material.

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Use waste water bottles to produce 3D printer filament recycling machine

3D printer filament can be produced from discarded water bottles, which will serve two key purposes: recycling plastic waste and producing 3D printer filament at extremely low cost.

The authors hope that as many people as possible will replicate and improve on this project. Therefore, all CAD, firmware and other resources are open source. Special consideration was also given to ensuring that all parts and tools used in the build process were easily sourced.

Schematic PCB