• USB Security Token

    USB Security Token

    This design implements a USB security token powered by an STM32 microcontroller. The device is engineered for compactness and efficient PCB integration while ensuring robust security features. Key elements of the design include: - **Microcontroller Core:** A STM32F103T8U6 serves as the primary processing unit, handling USB communication and security protocols. - **USB Interface:** A USB-A plug provides connectivity to the host. Dedicated net portals ensure proper routing of the VBUS, D+, D–, and ground signals. - **Power Regulation:** A low-dropout regulator supplies a stable 3.3V operating voltage, ensuring low noise and proper current supply to the microcontroller and peripherals. - **Signal Conditioning and EMI Filtering:** An EMI filter is used to maintain signal integrity and reduce interference while preserving the security token’s functionality. - **Synchronous Elements:** A ceramic resonator is incorporated to provide a precise clock source for USB data transfer and microcontroller operations. - **Additional Components:** Surface-mount resistors, capacitors, and LED indicators are deployed to ensure proper conditioning, decoupling, and status feedback. Their compact 0402 packages facilitate a highly integrated design. - **Connectivity and Net Portals:** Custom net portals are used throughout the schematic to streamline connectivity and PCB layout, keeping the design modular and easy to modify. This USB security token is designed with industry-standard components and robust connectivity to ensure secure, reliable operation in portable security applications. #USBToken #STM32 #PCBDesign #SecurityTechnology #PortableSecurity #Microcontrollers #USBInterface #PowerRegulation #EMIProtection #CompactDesign

    jharwinbarrozo

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    a month ago

    0 Uses

    255 Comments

    30 Stars


  • Water Level Indicator

    Water Level Indicator

    Daddy's first PCB. Measures the water level of a potted plant, displays the level using LEDs.

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    4 months ago

    0 Uses

    29 Comments

    3 Stars


  • LoRa soil monitor Reference Design

    LoRa soil monitor Reference Design

    This is a LoRa soil monitor Reference Design. It uses a STM32L031G6U6S microcontroller and a RFM95W-915S2 LoRa transceiver, integrated with sensor interfacing and LED indicators. Communication occurs via USART and SPI. The system is powered using a battery. #referenceDesign #simple-embedded #stm #template #reference-design

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    2 years ago

    0 Uses

    14 Comments

    3 Stars


  • Copilot v4 DogFooding - Audio Amplifier

    Copilot v4 DogFooding - Audio Amplifier

    I'm building an audio amplifier. These are the project requirements: - Type of Amplifier: Class D (for energy efficiency). - Input Source: Line-level input from a standard audio source, e.g., mobile phone or PC. - Output Power: 10W per channel (for a stereo setup). - Number of Channels: 2 (stereo output). - Distortion: Total Harmonic Distortion (THD) of less than 0.1% at full power. - Frequency Response: 20Hz to 20kHz. - Power Supply: Operate from a single 12V DC source. - Protection: Over-current and thermal protection for the amplifier IC. - Connectivity: Standard 3.5mm audio jack for input and screw terminals for speaker outputs. - Volume Control: A physical potentiometer for volume control. - Indicator: An LED indicator that shows power ON status. - Size Constraints: PCB size should not exceed 100mm x 100mm. Consider every requirement individually when answering any question

    3 years ago

    0 Uses

    0 Comments

    2 Stars


  • Aaduino

    Aaduino

    The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is meant to go inside a 3xAA battery holder creating a very small wireless node. Powered by an ATMega328p, it is fitted with an RFM69CW companion, two DS18B20 temperature sensors and an indicator LED

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    3 years ago

    0 Uses

    0 Comments

    2 Stars


  • LoRa Door and Window Sensor Reference Design bbYa

    LoRa Door and Window Sensor Reference Design bbYa

    This is a LoRa-based door and window sensor incorporating a microcontroller unit (MCU). It features a reed sensor, LED indicators, a AAA non-rechargeable battery, and a booster IC for constant voltage. The MCU is linked to peripherals through nets, ensuring optimal performance #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design

    2 years ago

    0 Uses

    1 Comment

    2 Stars


  • Garage door Status indicator

    Garage door Status indicator

    Welcome to your new project. Imagine what you can build here.

    5 years ago

    0 Uses

    4 Comments

    1 Star


  • Water Level Indicator

    Water Level Indicator

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    1 Star


  • voltage indicator

    voltage indicator

    Welcome to your new project. Imagine what you can build here.

    4 months ago

    0 Uses

    0 Comments

    1 Star


  • Tom Indicator Lights

    Tom Indicator Lights

    Welcome to your new project. Imagine what you can build here.

    4 years ago

    0 Uses

    0 Comments

    1 Star


  • Keypad lock reference design

    Keypad lock reference design

    This project involves the design of a keypad lock system. It utilizes an ATMEGA328P microcontroller, buzzers, LEDs for indicator functions and a 4x3 matrix keypad. An in-circuit serial programming (ISP) header is also present for programming the microcontroller. #project #Template #projectTemplate #lock #keypad #arduino #atmega328 #TPS613222A #ISP #buzzer #referenceDesign #simple-embedded #microchip #template #reference-design

    2 years ago

    0 Uses

    1 Comment

    1 Star


  • pundit.ai

    pundit.ai

    1. Overview: The Pundit pendant is a wearable AI transcription assistant. An innovative device designed to seamlessly integrate into daily activities, providing real-time transcription and note-taking capabilities. Combining advanced AI algorithms with state-of-the-art hardware components, the device offers crystal clear audio recording, durable construction, and convenient features such as cloud synchronization, weatherproofing, and a vibrant display for animations and expressions. 2. Hardware Specifications: * Rechargeable Battery: Lithium-ion battery providing up to 150 hours of continuous operation. * Construction: Durable aluminum body ensuring longevity and protection against wear and tear. * Audio Quality: High-fidelity microphone array for clear and accurate transcription, with noise cancellation technology. * Weatherproofing: Sealed construction to withstand various weather conditions, making it suitable for outdoor use. * Versatile Mounting: Equipped with a magnetic clasp for easy attachment to clothing or accessories. * Connectivity: Wi-Fi and Bluetooth connectivity for seamless data transfer and integration with other devices. * Charging: USB-C port for fast and convenient charging, with support for various power sources. * Input Microphone Array: Multiple microphones strategically placed for optimal audio capture and transcription accuracy. * Display: Colorful screen for displaying animations, expressions, and status indicators, enhancing user interaction and personalization. 3. Software Features: * Real-time Transcription: Utilizes AI algorithms for instant transcription of spoken words into text, with high accuracy. * Note-taking: Automatically creates and organizes notes based on conversations, timestamps, and contextual cues. * Audio Recording: One-touch button for initiating audio recording, with options for manual or automatic saving. * Cloud Synchronization: Syncs transcription data to the cloud for easy access and retrieval from any device. * Speech Recognition: Advanced speech recognition technology for identifying speakers and distinguishing between multiple voices. * Language Support: Multilingual support for transcription and note-taking in various languages. * Customization: User-configurable settings for adjusting transcription preferences, language models, and display animations. * Security: Encryption and authentication protocols to ensure the privacy and security of transcription data. 4. Dimensions and Weight: * Dimensions: Compact and lightweight design for comfortable wearability. * Weight: Minimal weight to prevent discomfort during prolonged use. 5. Compatibility: * Operating Systems: Compatible with iOS, Android, and other major operating systems. * Applications: Integration with popular productivity and communication apps for seamless workflow management. 6. Warranty and Support: * Warranty: Manufacturer's warranty covering defects in materials and workmanship. * Support: Dedicated customer support for technical assistance, troubleshooting, and software updates. 7. Target Market: * Professionals: Ideal for professionals in various industries, including journalists, researchers, students, and business professionals. * Outdoor Enthusiasts: Suitable for outdoor activities such as hiking, camping, and fieldwork where reliable transcription and note-taking are essential. * Everyday Users: Provides convenience and efficiency for everyday tasks, such as meetings, lectures, and personal reminders. 8. Conclusion: The Wearable AI Transcription Assistant sets a new standard for wearable technology, offering unmatched transcription and note-taking capabilities in a compact and durable package. With its advanced features, seamless connectivity, vibrant display, and user-friendly design, it is poised to revolutionize how we capture and manage information in our daily lives while adding a touch of personality and fun with customizable animations and expressions.

    a year ago

    0 Uses

    26 Comments

    1 Star


  • Ultrasonic Distance Meter Reference Design

    Ultrasonic Distance Meter Reference Design

    This circuit is an ultrasonic distance meter based on an ATTiny2313 microcontroller. It uses an HC-SR04 ultrasonic sensor to measure distance and displays the results on an OLED display. The power supply is constructed using a Boost converter (TPS613222A) and a 2-cell AA battery. Additionally, it also includes ISP for programming, RESET and START switches, and LED indicators. #project #Template #projectTemplate #ultrasonic #OLED #arduino #attiny2313 #TPS613222A #ISP #referenceDesign #simple-embedded #microchip #template #reference-design .

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    3 months ago

    0 Uses

    13 Comments

    1 Star


  • MAX1551 Reference Design

    MAX1551 Reference Design

    This project is a battery charging circuit utilizing a MAX1551 chip. It features a USB and DC power input, with LED status indicators. The design is outfitted with necessary decoupling capacitors and resistors to ensure smooth operation. #project #Template #charger #referenceDesign #batterycharger #MAX1551 #template #bms #analog

    2 years ago

    0 Uses

    1 Comment

    1 Star


  • Ultrasonic Distance Meter Reference Design

    Ultrasonic Distance Meter Reference Design

    This circuit is an ultrasonic distance meter based on an ATTiny2313 microcontroller. It uses an HC-SR04 ultrasonic sensor to measure distance and displays the results on an OLED display. The power supply is constructed using a Boost converter (TPS613222A) and a 2-cell AA battery. Additionally, it also includes ISP for programming, RESET and START switches, and LED indicators. #project #Template #projectTemplate #ultrasonic #OLED #arduino #attiny2313 #TPS613222A #ISP #referenceDesign #simple-embedded #microchip #template #reference-design

    a year ago

    0 Uses

    0 Comments

    1 Star


  • Arduino Temperature Indicator

    Arduino Temperature Indicator

    Temperature indicator using an Arduino Uno, a 16x2 I2C LCD, and a DHT22 temperature and humidity sensor, with minimal supporting components for pull-up and power stabilization.

    3 months ago

    0 Uses

    0 Comments

    0 Stars


  • Water Level Indicator - Cloned for Zhexuan

    Water Level Indicator - Cloned for Zhexuan

    Daddy's first PCB

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    3 years ago

    0 Uses

    4 Comments

    0 Stars


  • Water Level Indicator

    Water Level Indicator

    Daddy's first PCB. Measures the water level of a potted plant, displays the level using LEDs.

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    2 years ago

    0 Uses

    4 Comments

    0 Stars


  • Water Level Indicator - Cloned for Zhexuan

    Water Level Indicator - Cloned for Zhexuan

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Water Level Indicator tnWj

    Water Level Indicator tnWj

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Water Level Indicator tnWj sR6H bzfG

    Water Level Indicator tnWj sR6H bzfG

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Water Level Indicator tnWj

    Water Level Indicator tnWj

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Water Level Indicator tnWj

    Water Level Indicator tnWj

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Water Level Indicator

    Water Level Indicator

    Daddy's first PCB

    4 years ago

    0 Uses

    1 Comment

    0 Stars


  • Brita Indicator

    Brita Indicator

    Welcome to your new project. Imagine what you can build here.

    4 years ago

    0 Uses

    1 Comment

    0 Stars


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