• Open Source 150M Oscilloscope Differential Probe

    The PD150 is a compact 150MHz differential oscilloscope probe for engineers on a budget and advanced hobbyists. It has advanced features such as automatic DC offset voltage zeroing and low-frequency common-mode rejection tuning. It will also provide complete documentation in the spirit of old-school "anchor" test equipment, detailing its working principles in addition to typical instructions and specifications.

    Schematic PCB

  • Electronic door guarding (knock detection, reminder)

    The acceleration sensing unit (RSL10+KX023) attached to the back of the door is used to detect vibration and movement to detect events such as opening the door and knocking on the door. It also interacts with the terminal through information through BLE and can view the log on the handheld terminal. Handheld terminals are also implemented with RSL10. After powering on, it automatically scans the target device and connects to it. After connecting, it obtains the time and date information of the device (which can be modified at this time), and then enters the log interface. The wireless sensing unit and the BLE terminal exchange information through the BLE connection.

    Schematic PCB

  • Surface potentiometer: detects how much static electricity the human body carries

    During the dry season we often get electrocuted by metal objects, especially door handles. This is due to the charged static electricity in the human body. Any object can be charged, and often objects have electrical potentials of several thousand volts or more. Static electricity often causes malfunction or damage to electronic equipment. I've always wanted to know how much static electricity is carried in an object or human body, so I made a surface potentiometer to measure the potential of a charged object.

    Schematic PCB

  • ZYNQ version of high-performance open source oscilloscope: 1Gsps sampling rate, 100MHz bandwidth, capture rate 22000 wfm/s, Raspberry Pi for waveform rendering

    The biggest feature of this open source oscilloscope is its strong waveform rendering (afterglow/fluorescence) effect. At the beginning, the author used Raspberry Pi Module 3, which can render 22,000 frames per second. In the later stage, NVIDIA Jetson is used, which can render 130,000 frames. frame. ZYNQ's FPGA is responsible for triggering and data acquisition, and A9 is responsible for transmitting data to the Raspberry Pi. Then the Raspberry Pi does the display processing. The ADC uses 1Gsps HMCAD1511.

    Schematic PCB

  • ERASynthMicro: USB powered, portable, open source, RF signal generator, supports 12.5MHz - 6.4GHz

    It can be powered via a USB port and has an LCD interface for standalone use without a PC. ERASynth Micro uses a dual-loop PLL architecture to provide fast frequency switching and fine tuning resolution. Frequency, amplitude and pulse modulation capabilities are also available.

    Schematic PCB

  • Self-soldering PCB board design that supports reflow soldering (including PCB, schematic diagram, source code, etc.)

    After the user manually solders a PCB board, this board becomes the reflow controller, and then this board can be used to control other boards for reflow soldering, because this board has been specially designed to open a heating layer.

    Schematic PCB

  • Add a Bluetooth remote control setting circuit to the 4-20mA two-wire passive digital display meter

    The RSL10 module is plugged into the self-made optocoupler isolation circuit board, and the entire module is connected in series with the modified target instrument (4-20mA two-wire passive digital display meter) and then connected to the 4- In the 20mA current loop, when the actual working zero current is 4mA, the target instrument displays 4.000mA in the current mode; the overall voltage drop of the circuit board of the work is 2.513V; the changed range or unit is sent to the RSL10 on the circuit of the work through the mobile APP Setting command, the target instrument (currently its own voltage drops by more than 1V) will be changed by Bluetooth remote control to change the setting state, such as switching to different ranges or displaying different measured physical quantity units, etc.

    Schematic PCB

  • 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.

    Schematic PCB

  • 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

  • Home smart lighting control and indoor environment monitoring system 

    The project implementation uses RSL10 and external mechanical control structure to complete wireless control of traditional switches.

    Schematic PCB

  • Smart wearable devices based on RSL10

    A smart wearable device based on the RSL10 development board officially provided by EEWORLD. This device is divided into two parts: the host and the slave. However, this MCU only has one UART, but in actual project requirements we need to use two UARTs. The organizer of this event gave five boards, so a board without a sensor is used as the SPI slave and will receive The command parses and uses AT commands to control the audio.

    Schematic PCB

  • labview car instrument program

    It is composed of labview front panel and back panel controls.

    Schematic PCB

  • Frequency Probe - an ultra-miniature frequency probe

    An ultra-mini frequency probe designed by foreign expert David Johnson. This frequency probe can help you debug the circuit by displaying frequency and voltage. It can measure periodic waveforms from 1Hz to 5MHz with an accuracy of 0.3%. Of course, it can also be used as a voltmeter. Use it to tell you the current voltage value.

    Schematic PCB

  • ThunderScope: Open source software-defined oscilloscope (schematics, source code, etc.)

    ThunderScope is the first oscilloscope designed specifically for Thunderbolt, allowing live sample data to be streamed to your computer at over 1 GB/s. This design eliminates all limitations of traditional oscilloscopes by leveraging the powerful processing capabilities of modern devices. Measurements are made fast and easy, with cramped UIs replaced by multi-window layouts and support for modern accessibility features. Sample memory was increased from megabytes to gigabytes, and the fixed list of protocols and trigger types was replaced by an ever-expanding repo. ThunderScope is also open source, so you have complete control over your data from the moment you sample it. You can easily add your own custom features and benefit from new features built by the community.

    Schematic PCB

  • 6-digit handheld open source multimeter

    Software and hardware are all open source

    Schematic PCB

  • Software and hardware open source portable monitor CatSniffer (schematic diagram, PCB, source code, etc.)

    This board is a Swiss Army Knife for IoT security researchers, developers, and enthusiasts. The board can be used with different types of software, including third-party sniffers such as SmartRF Packet Sniffer, Sniffle, zigbee2mqtt, Z-Stack-firmware, Ubiqua Protocol Analyzer, our custom firmware, or you can even Specific software requires writing your own software.

    Schematic PCB

  • Using STM32F072 to regulate the pocket experimental power supply of TX4211 and SY6345

    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

  • STM32 OpenSource Multimeter - an open source multimeter suitable for DIY entry

    An open source multimeter design based on STM32F1/F3, with dual-range V/I, RMS measurement, continuity, component testing and other functions. The author has made all design files open source, which is very suitable for DIY entry.

    Schematic PCB

  • IOT desk lamp design

    RSL10 QFN EVB is used as the main control of IOT lamps. Because the GPIO of RSL10 is limited, the data protocol adopts single-line return-to-zero code communication method. The system only needs one GPIO1 as the LED RGBW driver. GPIO is used to drive WS2812. WS2812 is a control circuit and An intelligent externally controlled LED light source with integrated light-emitting circuit. Its appearance is the same as a 5050LED lamp bead, and each component is a pixel. The pixel contains an intelligent digital interface data latch signal shaping amplification drive circuit, a high-precision internal oscillator and a 12V high-voltage programmable constant current control section, which effectively ensures that the color of the pixel light is highly consistent. , the other ADC port is used to collect the temperature of the lamp, and when the temperature exceeds the limit standard, it automatically reduces the luminous efficiency of the lamp to avoid burning out the LED due to excessive temperature.

    Schematic PCB

  • 120-channel logic analyzer based on Raspberry Pi Pico

    The Raspberry Pi microcontroller 24-channel 100Msps logic analyzer has been upgraded to support 120 channels.
    Daisy chaining of five devices is supported, allowing capture of 120 channels. Includes performance improvements and visibility improvements to the rendering engine, more samples in the screen, automatic selection of capture modes, editing capabilities, and more. The playability is getting higher and higher.

    Schematic PCB

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