• OpenGlass: AI glasses based on ESP32S3, costing more than 100 yuan to copy

    ​You can record your life anytime and anywhere, remember people's names, calculate food calories, translate in real time, and have intelligent conversations...

    Schematic PCB

  • Bluetooth protocol analysis tool nRF52840 MDK USB Dongle

    The nRF52840 MDK USB Dongle is a small, low-cost development platform implemented by the nRF52840 multi-protocol SoC in a convenient USB Dongle form factor.

    Schematic PCB

  • 20 ink screen daisy chain gameplay

    Created a daisy chain through the serial port

    Schematic PCB

  • Based on the portable soldering iron open source system IronOS, download the full set of open source materials for Pinecil V1 (software, hardware, etc.)

    The portable soldering iron launched by PINE64 in the early days was based on the GD32 design. This time it was upgraded to the second generation product, which was changed to the domestically produced BL706. Its feature is that it supports low-power Bluetooth. The Bluetooth OTA upgrade function will be added to IronOS later. IronOS supports a variety of portable DC, QC, and PD powered soldering irons, and supports all standard functions of smart soldering irons.

    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

  • Tah: Arduino-compatible BLE platform, which can be used as beacons, microcontrollers and HID devices (including schematics, source code, etc.)

    Tah - Control anything from your smartphone, open source, Arduino-compatible Bluetooth Low Energy (BLE) platform that can be used as a beacon, microcontroller, and HID device.

    Schematic PCB

  • HEGduino V2: Cerebral blood map monitoring

    Since the release of HEGduino V1, we have been working continuously for more than a year and a half to develop a compact, state-of-the-art open hardware solution for home NIR-HEG biofeedback. HEGduino V2 is an original design that brings you low-cost, intuitive home brain training and research-grade cerebral blood flow monitoring. This new device also allows us to incorporate heart rate variability (HRV) training and even monitor breathing and skin temperature. HEGduino V2 is comfortable. Easy-to-use headset with wireless operation and battery power. These components are breakout boards that allow you to remove them from the headset for easy patching or replacement.

    Schematic PCB

  • Hamster Mix: Portable open source Bluetooth MIDI controller with Arduino and ESP32 (schematics, source code, etc.)

    Hamster Mix is ​​a portable MIDI controller powered by Arduino that connects to MIDI via Bluetooth. It allows you to control effects and play MIDI notes in 5 octaves. Twelve keys and the ability to switch up and down through the octave make it easy to control the notes of an entire keyboard piano using our compact controller (about the size of a hamster). Hamster Mix connects to Mac, PC, Ipad and even mobile phones via Bluetooth. You can control any MIDI-enabled music program such as Ableton, Garage Band, FL Studio, Reaper, etc. Two additional buttons and two potentiometers allow you to set up your own custom effects. You can even use the buttons as a Bluetooth track launcher instead of a keyboard. You can control MIDI-enabled mobile applications such as GarageBand, FL Studio Mobile, Reason Compact, Audiokit Synth One, Moog applications, and more. Make music on the go with Hamster Mix, which fits in your pocket, meaning no wires or bulky equipment.

    Schematic PCB

  • Plant Bot: an open source project for caring for potted plants based on ESP32

    Plant Bot is an open source project based on ESP32 that allows a single PCB to perform the functions of detecting humidity, watering, providing lighting, and controlling and communicating with the user via WiFi/BLE.

    Schematic PCB

  • Flipper Zero: an open source geek multi-function tool based on STM32W55B

    Flipper Zero is a portable multi-tool designed for developers and geeks with a toy-like body. It enjoys exploring digital content such as radio protocols, access control systems, hardware, and more. It's completely open source and customizable, so you can extend it in any way you like.

    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

  • 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

  • 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

  • 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

  • Environmental expert’s smart watch

    The work is mainly based on smart watches as a product that contributes to mine operations. The shape of [RSL10-SENSE-GEVK] is perfect for making a watch. All the onboard peripherals are utilized. The watch will collect data every once in a while and store it in the onboard external Flash. A total of fourteen days of historical data can be stored. If the power consumption is reasonably designed, it can Replace the button battery every two months. Normally worn in the normal mode, you can enter the downhole mode by pressing the button. In the downhole mode, the surrounding environment will be detected. When the environment reaches a bad situation, it will enter the alarm state. At the same time, when the person going down the pit feels uncomfortable, he can long press the button to enter the call for help state.

    Schematic PCB

  • Sugar glider health management system based on RSL10

    The project uses RSL10 to build a sugar glider health monitoring system. With good exercise and diet, my little jelly (sugar glider) can grow up healthily.

    Schematic PCB

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