Three-axis MEMS accelerometer - Xiaomi smart bracelet design

Schematic PCB

PX4 Robotic Drone Vehicle/Flight Management Unit (VMU/FMU) - RDDRONE-FMUK66

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Three-Phase Power Meter Reference Design

The three-phase power meter reference design is used to measure and record active and reactive energy in directly connected three-phase networks. It is pre-certified to the European EN50470-1, EN50470-3, Class B and Class C, and IEC 62053-21 and IEC 62052-11 international standards for active energy class 2 and class 1 electronic meters.

Schematic PCB

Sub-μA current sensor based on Kinetis K22F

The Sub-μA Current Sensor is a Kinetis K22F based current measurement board running on FreeRTOS and can be used with the Freedom Development Ecosystem or any other Arduino-like development board.

This reference design allows for non-intrusive connection between any MCU and a 3.3V shield and measurement of a wide range of low currents (~60 nA – 5 mA). Multiple communication methods are available, including integration with Freedom Sensor Toolbox (CE).

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2018 Electronic Competition Question B-Fire Fighting Aircraft (Dalian University of Technology)

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2020 Electronic Competition Question D-Obstacle Avoidance Aircraft (Chongqing University of Science and Technology)

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posture correction robot

It's common for computer users to bend over in front of a screen, which can eventually lead to back problems. There are various gadgets on the market that solve this problem by constantly reminding users to sit up straight, but most of them are not fun. So I made a fun little tool for this problem.

Schematic PCB

MiniQ: a mini quadcopter

MiniQ is a mini quadcopter that is open source from hardware design to control algorithm. The algorithm used for the Altitude Heading Reference System (AHRS) is the DCM complementary filter. The system calculates the height and controls the output PWM of the four motors 1600 times per second. It can be controlled remotely via Bluetooth (Bluetooth Serial Port Profile).

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FXLS8967AF 3-axis acceleration sensor sensor toolbox development board

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FXLS8974CF 3-axis IoT acceleration sensor sensor toolbox development board

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L99H02XP DC Motor Control IC Evaluation Board

TESEO-LIV3FL low power module evaluation board

EVB-LIV3FL is a complete standalone evaluation platform for Teseo-LIV3FL low power GNSS module ST solution.

FRDM-K22F-AGMP03: Sensor Toolbox development board for 10-axis solution using FXLS8962AF, FXAS21002C, MAG3110 and MPL3115A2

Based on DA14580_ADXL362 schematic diagram (Xiaomi bracelet solution)

Based on DA14580_ADXL362 schematic diagram (Xiaomi bracelet solution)!

Schematic PCB

1A buck LED driver board based on ALED6000 automotive grade dimmable LED driver

The STEVAL-ILL089V1 evaluation board is based on the ALED6000 monolithic current source for high power LED driving. Digital dimming is implemented by driving the dedicated DIM pin. Low drop-out operation with almost 100% duty cycle can be achieved.

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Breakout board for FXLN83xxQ NXP accelerometers

Single phase electricity meter

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Four+rotor+MAV four-wing aircraft

Contains the design principles of four-wing aircraft

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Quad-rotor aircraft electronic control program_can make the quad-rotor aircraft hover stably

Foreign quadcopter codes

Schematic PCB

L9963E evaluation board for developing 48V automotive battery management systems (BMS)

The EVAL-L9963E-MCU is a hardware tool for evaluation of L9963E, automotive chip for battery management applications.