AC Ohmmeter mR-71 Remake

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2017 Electronic Competition H Question-Remote Amplitude and Frequency Characteristics Test Device-Shengyi Works-Circuit Scheme

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2017 National College Student Electronic Design Competition Question H-Remote Amplitude and Frequency Characteristics Tester-Paper

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2017 Electronic Competition H Question-Remote Amplitude-Frequency Characteristics Test Device-Design Plan and Report (3 National Awards)

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2019 E-Contest Question K-Simple Multifunctional Liquid Container (Chongqing Division)

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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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Full open source reverse "blasting" tool

Through this open source tool, everyone can better understand how program firmware is "exploded", thereby improving product security. Crack AES, crack RSA, crack DES and so on.

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FreeEEG32: Affordable, stackable, open source, 32-channel EEG

FreeEEG32 is a stackable, open source, 32-channel, 24-bit, sigma-delta, simultaneous sampling board designed to meet the needs of scientists and brain hackers who require high-quality, affordable research-grade equipment. We have been developing this EEG for many years as we worked to create the ultimate open source solution to expensive proprietary EEG technology. FreeEEG32 combines four 8-channel AD7771 ADCs with ultra-low noise (<0.22 μV measured) sources and references, all driven by the powerful STM32H7 ARM Cortex-M7, while handling pre-processing. It's sensitive enough to handle high-quality EEG data collection and more.

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Design 8-channel asynchronous ADC acquisition into synchronous acquisition through phase compensation

A phase compensation algorithm is used to compensate for the additional phase delay introduced by the multiplexed ADC, thereby producing an effect equivalent to a synchronously sampled ADC.

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MAXREFDES1213: Smart electronic load using the MAX32630FTHR and MAX11311

The MAXREFDES1213 is a reference design showcasing the MAX32630FTHR and MAX11311, as well as several other Maxim products, that demonstrates a small size, low-cost, portable electronic load (E-load) for testing power converters and PMICs.

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TI high-speed oscilloscope reference design (sampling rate 12.8Gsps, bandwidth 6GHz, 12bit resolution)

The complete PCB related files are open source, and there is also a design document for reference and study.

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Phase locked loop ADF4350

Phase locked loop designed based on ADF4350

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A digital signal generator based on AD9850

Digital signal generator based on AD9850 

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CN0133

Detecting low-g acceleration using the ADuC7024 precision analog microcontroller and the ADXL345 digital accelerometer

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CN0119

Implement precision electronic scale design using AD7192, a 24-bit Σ-Δ ADC with built-in PGA

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CN0118

Implement precision electronic scale design using AD7191, a 24-bit Σ-Δ ADC with built-in PGA

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CN0108

Implement electronic scale design using the 20-bit Σ-Δ ADC AD7781 with built-in PGA

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CN0107

Implement electronic scale design using the 24-bit Σ-Δ ADC AD7780 with built-in PGA

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