OpenSimpleLidar: Open source laser rangefinder for SLAM and navigation

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.

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DC2296A DC2209 and DC2210 Digital Temperature Measurement System

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[Open Source] Car Speed ​​Detector Based on Arduino and Infrared Sensor

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Three-axis MEMS accelerometer - Xiaomi smart bracelet design

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Motion Sensor Stopwatch Design Information (Schematic + Source Code)

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Stereo development solution based on Amazon AVS smart speaker microphone array

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Quadrant: Gesture audio adjustment based on 4 TOF sensors

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Bicycle speed measurement based on Hall sensor

Ultra-simple Hall sensor speed measurement, the value is displayed on the 16x02 LCD display

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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.

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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 D-Gesture Recognition Device (Anhui University)

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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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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (Chengdu University of Information Science and Technology)

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (Dalian University of Technology)

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (East China Jiaotong University Institute of Technology)

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Distributed temperature and humidity acquisition system based on STM32H745I

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Window invisible magnetic sensor

2 Layers PCB 8.941 x 60.782 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

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W489202ASN1_Ultrasonic sensor schematic diagram

Based on ESP32, HC-SR04 ultrasonic sensor

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