OCEANSIDE (MAXREFDES9#): 3.3V to 15V input, ±15V (±12V) output, isolated power supply

This document details the Oceanside (MAXREFDES9#) subsystem reference design, a 3.3V to 15V input, ±15V (±12V) output, isolated power supply. The Oceanside design includes a high-efficiency step-up controller, a 36V H-bridge transformer driver for isolated supplies, a wide input range, and a pair of adjustable output low dropout (LDO) linear regulator. Test results and hardware files are included.

Schematic PCB

ArduPilot: Open source flight control APM and PIXHAWK (schematic and source code)

APM (ArduPilotMega) is a flight control product launched by the DIY Drones community in 2007. It is the most mature open source hardware project today.

Schematic PCB

FRDM33772CSPEVB: MC33772C evaluation board with SPI communication

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

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Anonymous Science and Technology-Navigator Flight Control Information Package-v1.031

All flight control information is provided to buyers in the form of data packages, providing flight control development environment, various drivers, various STM32 chip information, all sensor information, flight control related knowledge information, etc., as well as anonymous flight control source code, communication Board source code, etc., the open source code is a complete set of projects, and buyers can directly compile and download it after getting it. Using our materials, you can easily get started with flight control learning and learn the structure and ideas of flight control engineering. After having a certain understanding of flight control, buyers can easily transplant the flight control program into their own system, or add the functions you need.

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Open source micro-racing car based on ESP32H2, inspired by Mario Kart

This is a fun electronic toy car that features power-ups! The author uses color sensors and magnetic switches to trigger fun tricks like acceleration, deceleration, and rotation. It draws a lot of inspiration from Mario Kart.

After a failed Kickstarter campaign, the author has now open-sourced the software, hardware, and mechanics.

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RF transceiver reference design tuned to 915 MHz using wireless MCU AXM0F243

small home weather station

It consists of two parts: the outdoor end (Outdoor) and the indoor end (Indoor). The Outdoor end can be placed outside the window to monitor real-time outdoor temperature, humidity, air pressure, illumination and other information. The Indoor is placed indoors to receive weather data and display it.

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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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ESPboy: Sub 1GHz open source radio scanner based on CC1101

The ESPboy CC1101 chip module allows you to detect Sub1Ghz signals (300-348MHz, 387-464MHz, 779-928MHz). Scan, decode, store to open garage doors, obstacles, IoT sensors...

Schematic PCB

MPC5606EEVB: NXP MPC5606E evaluation board

^The NXP® MPC5606E MCU is a gateway system built on Power Architecture® ^{technology designed to move data from disparate sources over Ethernet.}

Application circuit of TLP7920 isolation amplifier (voltage detection)

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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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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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The most complete six-axis robot design drawings

The most complete six-axis robot design drawings

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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

MTRCKTSBN5604P: 3-Phase Sensorless BLDC Development Kit with NXP MPC5604P MCU

The MTRCKTSBN5604P motor control development kit is ideal for sensorless applications requiring one BLDC motor, such as HVAC or electric pumps.

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