atmega8-328 prototype board: good voltage filtering function

This board was created for the mcudude library and has good voltage filtering, reducing reset time via a c10 capacitor (10nF!!) on the dtr line of a ch340 system. It would be nice to solder a precision socket under the x1 oscillator, it gives you the opportunity to try different frequencies (useful for rs232 communication for example)​

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POGO ISP Micro: Small and reliable programming adapter for AVR ISP

Do you need a small ISP to program your onboard AVR device? POGO ISP Micro is the right solution!

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OpenFlops V1: Hardware open source floppy drive emulator/emulator

OpenFlops is a hardware open source floppy drive emulator/emulator inspired by the ubiquitous Gotek hardware. It is designed to run FlashFloppy firmware.

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Lattice ICE40 HX4K FPGA breakout board

Breakout board for Lattice HX4K FPGAs with 10 PMOD connectors and onboard microcontroller for programming and communication via USB.

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10x10x10 LED cube

The project is a cube shaped 10x10x10 LED matrix controlled by a serial interface.

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100w stereo amplifier board DIY TDA2030 IC with transistor

This is a 100w stereo amplifier board. This project can easily play two 50w speakers.

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100w mono audio amplifier board DIY 2SC5200

This is a 100w mono audio amplifier board. This project can easily play speakers up to 100w. I used two 2SC5200 transistors and a 30-0-30 transformer in this project

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100 QFP to DIP

2-layer PCB 28 x 132 mm FR-4, 1.6 mm, 1, tinned with leads, green solder mask, white silkscreen;

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Teacher ChaN’s AC load analyzer

Supports voltage, current, effective power, apparent power, power factor, frequency, and harmonic component display.

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The world's first ARM core aerospace grade chip, SAMRH71F20-EK evaluation kit (schematic, etc.)

The Microchip SAMRH71F20-EK Evaluation Kit is a hardware platform for evaluating the SAMRH71F20 microcontroller.
Powered by Microchip's MPLAB® HARMONY integrated development platform and other commercially available development environments, the evaluation kit provides easy access to the Microchip RadHard SAMRH71F20 microcontroller and its aerospace-specific feature set and shows how to integrate the device into a custom design.

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PYPRCA: python programmable open source calculator based on Raspberry Pi PICO, developed using circuitpython

Pocket calculator style general purpose programmable device (computer) ideal for learning programming and improving building/soldering skills.

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Raspberry Pi RP2040 direct drive DVI/HDMI interface display cool display

These demos all use Adafruit's PicoDVI branch, which makes the video framebuffer look like a regular Adafruit_GFX object, which makes drawing very easy.

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PicoCray: 9 Raspberry Pi pico RP2040 for parallel computing

The PicoCray project connects multiple Raspberry Pi Pico microcontroller modules into a parallel architecture, utilizing the I2C bus to communicate between nodes

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3-Phase Multilevel Inverter Using MOSFETs

This reference design provides design guidance, data, and other content for a 3-phase multilevel inverter with 5-level output. It uses 150V MOSFET to drive AC 200V motor.

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TEVAL-SILPLC01: Main control STM32H723VG, safety certified PLC industrial board

STEVAL-SILPC01 is a PLC solution with 1oo2 architecture, featuring CLT03-2Q3 dual-channel digital input and IPS160HF single-channel digital output. The hardware design meets the SIL level. It has been officially evaluated by TÜV Italia (TÜV SUD Group) to SIL 2/PL d requirements: Random failure rate, system capabilities (for hardware), architectural limits in accordance with IEC 61508, EN 62061, EN ISO 13849 - 1, EN ISO 13849-2 standard.

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Open source headphone design based on RP2040 and PCM3060

All files are open source, including software, hardware and 3D printing shells, and how to make and assemble them are described in detail, especially the EQ equalization filter test and frequency response test are explained in detail. The main control uses RP2040 + TI 24-bit asynchronous stereo audio codec PCM3060 with 96/192kHz sampling rate.

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Open source smart cooling plate design based on PIC16F17146

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3-phase AC 400V input PFC converter

This reference design provides design guidance, data and other content for a 4kW 3-phase AC 400V input PFC converter using a 3-phase totem pole topology and 1200V SiC MOSFETs.

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5kW Isolated Bidirectional DC-DC Converter

This reference design provides design guidelines, data and other content for a 5kW isolated bidirectional DC-DC converter using a 1200V SiC MOSFET dual active bridge (DAB) conversion method.

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500W server power supply using TOLL package DTMOS

This reference design provides design guidelines, data, and other content for a 500W server power supply using continuous current mode PFC and LLC DC-DC converter. Using TOLL packaged MOSFETs in the PFC circuit reduces the overall size and increases power density.

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