ESP32

PÚCA DSP is an open-source, Arduino-compatible ESP32 development board for audio and digital signal processing (DSP) applications with expansive audio-processing features. It provides audio inputs, audio outputs, a low-noise microphone array, an integrated test-speaker option, additional memory, battery-charge management, and ESD protection all on a small, breadboard-friendly PCB. Synthesizers, Installations, Voice UI, and More PÚCA DSP can be used for a wide range of DSP applications, including but not limited to those in the fields of music, art, creative technology, and adaptive technology. Music-related examples include digital-music synthesis, mobile recording, Bluetooth speakers, wireless line-level directional microphones, and the design of smart musical instruments. Art-related examples include acoustic sensor networks, sound-art installations, and Internet-radio applications. Examples related to creative and adaptive technology include voice user interface (VUI) design and Web audio for the Internet of Sounds. Compact, Integrated Design PÚCA DSP was designed for portability. When used with an external 3.7 V rechargeable battery, it can be deployed almost anywhere or integrated into just about any device, instrument, or installation. Its design emerged from months of experimentation with various ESP32 development boards, DAC breakout boards, ADC breakout boards, Microphone breakout boards, and audio-connector breakout boards, and – despite its diminutive size – it manages to provide all of that functionality in a single board. And it dos so without compromising signal quality. Specifications Processor & Memory Espressif ESP32 Pico D4 Processor 32-bit dual core 80 MHz / 160 MHz / 240 MHz 4 MB SPI Flash with 8 MB additional PSRAM (Original Edition) Wireless 2.4 GHz Wi-Fi 802.11b/g/n Bluetooth BLE 4.2 3D Antenna Audio Wolfson WM8978 Stereo Audio Codec Audio Line In on 3.5 mm stereo onnector Audio Headphone / Line Out on 3.5 mm stereo connector Stereo Aux Line In, Audio Mono Out routed to GPIO Header 2x Knowles SPM0687LR5H-1 MEMS Microphones ESD protection on all audio inputs and outputs Support for 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48 kHz sample rates 1 W Speaker Driver, routed to GPIO Header DAC SNR 98 dB, THD -84 dB (‘A’ weighted @ 48 kHz) ADC SNR 95 dB, THD -84 dB (‘A’ weighted @ 48 kHz) Line input impedance: 1 MOhm Line output impedance: 33 Ohm Form Factor and Connectivity Breadboard friendly 70 x 24 mm 11x GPIO pins broken out to 2.54 mm pitch header, with access to both ESP32 ADC channels, JTAG and capacitive touch pins USB 2.0 over USB Type C connector Power 3.7/4.2 V Lithium Polymer Rechargeable Battery, USB or external 5 V DC power source ESP32 and Audio Codec can be placed into low power modes under software control Battery voltage level detection ESD protection on USB data bus Downloads GitHub Datasheet Links Crowd Supply Campaign (includes FAQs) Hardware Overview Programming the Board The Audio Codec

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A low-power, open source, 2.7-inch IoT display powered by an ESP32-S2 module and featuring SHARP's Memory-in-Pixel (MiP) screen technology The Newt is a battery-powered, always-on, wall-mountable display that can go online to retrieve weather, calendars, sports scores, to-do lists, quotes…really anything on the Internet! It is powered by an ESP32-S2 microcontroller that you can program with Arduino, CircuitPython, MicroPython, or ESP-IDF. It's perfect for makers: Sharp’s Memory-in-Pixel (MiP) technology avoids the slow refresh times associated with E-Ink displays A real-time clock (RTC) was added to support timers and alarms The Newt was designed with battery operation in mind; every component on the board was chosen for its ability to operate at low power. Newt was designed to operate 'untethered,' which means it can be mounted in places where a power cord would be inconvenient, for example a wall, refrigerator, mirror, or dry-erase board. With the optional stand, desks, shelves, and nightstands are also good options. Newt is open source, and all design files and libraries are available for review, use, and modification. However, doing that is not required. Each Newt is delivered with working code with the following features: Current weather details Hourly and daily weather forecast Alarm Timer Inspirational quotes Air-quality forecast Habit calendar Pomodoro timer Oblique Strategy cards Only following the Wi-Fi provisioning instructions is needed to get started. No app downloads are required. Specifications Display Sharp Memory LCD Screen Size 2.7 inch Resolution 240 x 400 Deep Sleep Current 30 uA Refresh Rate < 0.001 s Periodic Screen Refresh Required No Input Buttons 10 capacitive pads, 1 push button RTC included Yes Speaker included Yes Power Input USB Type-C Battery included No Programming Languages Arduino, CircuitPython, ESP IDF, MicroPython Dimensions 91 x 61 x 9 mm Microcontroller Espressif ESP32-S2-WROVER Module with 4 MB flash and 2 MB PSRAM Wi-Fi capable Supports Arduino, MicroPython, CircuitPython, and ESP-IDF Deep sleep current as low as 25 μA Display 2.7-inch, 240 x 400 pixel MiP LCD Capable of delivering high-contrast, high-resolution, low-latency content with ultra-low power consumption Reflective mode leverages ambient light to eliminate the need for a backlight Time Keeping, Timers, and Alarms Micro Crystal RV-3028-C7 RTC Optimized for extreme low-power consumption (45 μA) Able to simultaneously manage a periodic timer, a countdown timer, and an alarm Hardware interrupt for timers and alarms 43 bytes of non-volatile user memory, 2 bytes of user RAM Separate UNIX time counter Buzzer Speaker/buzzer with mini class-D amplifier on DAC output A0 can play tones or lo-fi audio clips User Input Power switch Two programmable tactile buttons for Reset and Boot 10 capacitive touchpads Power Newt is designed to operate for one to two months between charges using a 500 mAH LiPo battery. The exact run time varies. (Heavy Wi-Fi use, in particular, will reduce battery charge more quickly.) USB Type-C connector for programming, power, and charging Low-quiescence voltage regulator (TOREX XC6220) that can output 1 A of current and operate as low as 8 μA. JST connector for a Lithium-Ion battery Battery-charging circuity (MCP73831) Low-battery indicator (1 μA quiescence current) Software Newt hardware is compatible with open-source Arduino libraries for ESP32-S2, Adafruit GFX (fonts), Adafruit Sharp Memory Display (display writing), and RTC RV-3028-C7 (RTC) Arduino libraries and sample programs are under development and will be available in our GitHub repository before launch CircuitPython libraries and registration are on the roadmap, with the development of a CircuitPython library for the RV-3028 real-time clock as a key dependency Included Phambili Newt – Fully assembled with pre-loaded firmware Laser-cut desktop stand Mini-magnet feet Required screws Support & Documentation Full instructions for use GitHub: Arduino Library and Codebase GitHub: Board schematics Videos of prototypes or demos (build tracked on Hackaday)

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Ulanzi TC001 is an LED pixel clock consisting of 256 individual addressable RGB LEDs (8x32) with built-in battery, buzzer, light, temperature and humidity sensor. The integrated rechargeable battery offers a runtime of up to 5 hours. The WiFi connection to the clock is made via an ESP32 chip. Ulanzi TC001 uses an ESP32-WROOM-32D module. Features Pixelated message display Simultaneous Display of the Number of Followers: Fan growth is immediately visible, suitable for YouTube, Bilibili, and Weibo. Pomodoro Clock Design: Manage your own time more scientifically. Explore unlimited possibilities: Multiple programs need to be installed through the control server to achieve more functions. Awtrix Makes it Better: Awtrix simulator in TC001’s firmware simulates an Awtrix matrix and allows you to control the clock using a standard Awtrix host. Hi-tech and stunning appearance: Modeling simple atmosphere, LED full-color pixel screen with better imaging. Built-in 4400 mAh battery with up to 5 hours of battery life. Specifications Number of LEDs: 256 (8x32) Operating voltage: 3.7 V Power: 3 W Battery capacity: 4400 mAh Interface: USB-C Dimensions: 200.6 x 70.3 x 31.9 mm Weight: 283 g Inbegrepen Ulanzi TC001 Smart Pixel Clock USB cable Manual Downloads Firmware

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