gk is a small battery-powered handheld game console based on an STM32H757 microcontroller (600 MHz) and 128 MiB XSPI SDRAM.

Schematic PCB

ADALM2000 is a 9-in-1 portable test and measurement instrument launched by ADI.

Schematic PCB

Schematic PCB

ESC is the abbreviation of Electric Speed ​​Controller, that is, electronic speed controller, or ESC for short. The author is Benjamin Vedder, so it is called VESC. You may have heard of it, which is Benjamin ESC. This project is mainly divided into several parts, VESC firmware, bill of materials, VESC hardware, and VESC tool software. It is a very complete software and hardware project, and the supporting software is also excellent.

Schematic PCB

Cruelfox, a forum expert, has updated his article to share with you an experimental idea of ​​a CNC experimental power supply. The power supply uses two domestic chips, with a 3,000-word detailed explanation. He briefly talked about the first experimental power supply he made, whose shell was an aluminum medicine box and whose knob was a toothpaste cap. He mainly talked about the ideas and principles of the current mini PCB pocket version.

Schematic PCB

This is a reference design for CLLLC Full Bridge Bidirectional Power Converter for electric vehicles. By using SiC MOSFET, it can operate at high switching frequency, achieving high efficiency, small size and lightweight.

CANable 2.0 is a small, low-cost, open-source USB to CAN adapter. CANable enumerates as a virtual serial port on your computer and acts as a serial line to CAN bus interface. Using the alternative candleLight firmware, CANable enumerates as a native CAN interface on Linux. CANable 2.0 supports standard CAN and CAN-FD.

The CANable adapter is compatible with ARM-based embedded platforms such as Raspberry Pi, Raspberry Pi Zero, ODROID, BeagleBone, etc., making it ideal for integration into OEM products.

Schematic PCB

Schematic PCB

Schematic PCB

High Performance, 10-Bit to 16-Bit Resolver-to-Digital Converter

Schematic PCB

Schematic PCB

This awesome project comes from the nV-level measurement instrument challenge launched by xDevs. The project requirements are relatively difficult and only one author has completed it. The author has open sourced all project materials and provided detailed explanations (in English).

Schematic PCB

This is a very simple open source scanning laser rangefinder. It uses triangulation. Its components cost less than $35 (excluding shipping). This lidar is very useful in robotics - for SLAM and navigation tasks.

Schematic PCB

My initial idea for the "Badminton Training Device" project was to sense the form and intensity of the racket swing, whether it hit the badminton and where it was hit, etc., record the quality of all swings after a game, and combine it with the host computer to make a badminton shot. Play the practice analysis system. The MLC and FSM modules in LSM6DSOX can analyze and identify actions, which greatly reduces the data processing requirements of the MCU and can save resources to complete prompt or record functions.

Schematic PCB

Schematic PCB

This reference design (RD) is for a dual-band CDMA front-end IC that uses a PCS-band signal path for 2.5GHz LEO satellite channel and a cellular-band signal path for GlobalStar IS-95 CDMA applications. The MAX2323 LNA plus mixer for dual-band CDMA handsets is featured.

Schematic PCB

WiCAN is a powerful CAN adapter based on ESP32-C3 that can be used for car hacking and general CAN bus development. It is available in two form factors: OBD-II and standard USB-CAN. The original firmware can interact directly with RealDash using Wi-Fi or BLE, which allows you to create custom dashboards with beautiful graphics. It is available for Android, iOS, and Windows 10. WiCAN connects to your existing Wi-Fi network and any device on that network, and it allows you to configure Wi-Fi and CAN settings through a built-in web interface. Both versions have a power saving mode that detects when the voltage drops below 13 V or other preset values. When this power saving mode is enabled, WiCAN is able to enter sleep mode, reducing the current consumption to less than 1 mA.

Schematic PCB

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

The Speeduino project is a flexible, fully-featured engine management system (EMS aka ECU) based on the low-cost open-source Arduino platform. It provides the hardware, firmware, and software components that make up an engine management system, all under an open license. With over 1,000 installations, Speeduino has evolved into a product that meets the needs of the hobbyist and enthusiast community without the price tag of a traditional aftermarket ECU.

Schematic PCB

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

Schematic PCB

Schematic PCB

Quadcopter Matlab simulation program

Schematic PCB