Power supply design for Kintex Ultrascale FPGA: PMBus compatible, strictly regulated, 1.80V, 2A

This reference design provides a power-supply circuit with an input voltage of 10.8V to 13.2V, an output voltage of 1.80V, and an output current of 2A using the MAX15303 InTune™ Point-of-Load (PoL) Controller. The circuit was developed to power a VCC1V8 rail on a Xilinx® Kintex® Ultrascale™ FPGA. Included in this reference design are a schematic, applications information, and a bill of materials.

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Electric vehicle charger schematic diagram (UC3842+LM324+TL431)

Electric vehicle charger schematic diagram (UC3842+LM324+TL431)

Schematic PCB

MAXREFDES108#: Non-isolated 12V/1A PoE powered device power supply

This document details the MAXREFDES108# subsystem reference design, a 36V to 57V input, 12V output, step down non-isolated power supply capable of 12W. Design files and test results are included. Hardware is available for purchase.

IEEE 802.3bt PoE PD reference design with NCP1566-based isolated DC/DC converter

30 W Automotive 2 MHz Preregulator, Non-Isolated, Synchronous Buck Reference Design Based on NCV891930

HealthyPi v4 - Unplugged: Wireless, wearable, open source vital signs monitor powered by ESP32

Reliable health monitoring has traditionally required us to tether ourselves to machines that record our vital signs around the clock. However, outside of clinical settings this is rarely practical. We developed HealthyPi v4 in part to address this challenge. Building on its predecessor, HealthyPi v4 is a fully open source standalone vital signs monitor with wireless and wearable capabilities.

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DeepLabCut: Marker-free pose estimation for animals performing various tasks

Label-free pose estimation from user-defined features via deep learning for all animals

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Based on STM32H747, Arduino® Nicla vision development board schematic

Arduino® Nicla Vision is a ready-to-use standalone camera for analyzing and processing images at the edge. It's suitable for asset tracking, object recognition and predictive maintenance thanks to its 2MP color camera, smart 6-axis motion sensor, integrated microphone and distance sensor. Quickly implement sensor nodes that send collected data to the Arduino® Cloud (or third-party vendor service) via integrated WiFi/BLE connectivity.

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UsbSafe²: an open, programmable dongle for protecting USB devices from USB hosts and chargers

Always stay secure and protect your private data and gadgets when connected via USB. USB connections transfer information and power. UsbSafe² is a device that protects USB-connected hardware from excessive voltage, current, and unauthorized data access. Unfortunately, the practice of “juicing” (accessing data from devices connected to public charging stations) has become very common. UsbSafe² offers a unique combination of anti-juicing mode and fail-power protection. With UsbSafe², you'll feel safer no matter where you are or what you plug in, your valuable gadgets are protected and secured!

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CN0219

^{Adopt ADAV801/ADAV803 audio codec to implement S/PDIF and I 2} S interface with SigmaDSP codec

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ElectronBot: A movable computer accessory, a cute and tough desktop robot (newly produced by Zhihui Jun)

The project is a small desktop-level robot tool that can be used to help you control your computer, etc. Its functions can be defined by you. The inspiration for the appearance design is EVE in WALL-E~ The robot has a USB communication display screen function, has 6 degrees of freedom (one roll and pitch for the hand, one for the neck, and one for the waist), and uses its own modified special servo to support the joints Angle return.

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MAXREFDES1185: 3.5W, 24V offline flyback converter using MAX17595

The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators.

FRDM33772CSPEVB: MC33772C evaluation board with SPI communication

Open source 12-lead portable electrocardiograph

This open source has a complete host computer, slave computer and schematic diagram, as well as a detailed design paper.

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Zhihuijun produces portable pocket monitor & power bank

Zhihui Jun designed and produced a portable pocket monitor (& power bank) to solve personal pain points. There is no room for improvement in terms of appearance~

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For smart devices, SABER board based on i.MX 6SoloX application processor

The SABER board for smart devices is based on the i.MX 6SoloX processor and supports 4-core processing, low-power multimedia and graphics applications.

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OLED-Boy, a mini OLED game console based on ATmega328P

This is an open source work by netizen aziddy, based on the classic Adafruit Feather 328P development board (the MCU master is Microchip's ATmega328P) and a mini electronic game console with a 128x64 OLED screen

ESP8266 multi-function ink screen

Arduino development, weather, clock, reading, network distribution and other functions

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REF-10W ADAPTER: 10.5W 5.0V USB Adapter Reference Design

This is a 10.5W 5.0V USB adapter reference design using Infineon's quasi-resonant PWM integrated circuit ICE2QS03G and CoolMOS™ IPU60R950C6 (IPAK), with a small form factor architecture and multiple protection modes to achieve high system reliability.

DIY personal laptop

The author specially bought a laptop motherboard, and then DIYed the peripherals and casing. The overall effect is quite beautiful.

Schematic PCB