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12bit Smart DAQ Hardware Specifications

Miguel Tomas Silva edited this page Mar 4, 2023 · 27 revisions

The hardware specifications for the 12bit PCB with dimensions of 52x46mm are the following:

  • QFN 56 Dual Xtensa LX7 Core Processors running up to 240MHz
    • RISC V ultra-low power co-processor
    • 512Kb RAM (PSRAM max 1 Gb);
    • 16Mb SOIC 8 NOR SPI Flash Memory (max 1Gb);
    • 2.4GHz ISM wireless connectivity;
    • Up to 118 12bit ADC Multiplexed DAQ channels;

  • Authentication & Security:
    • SOIC-8 ATSHA204A SHA-256 high-security hardware authentication IC for secure and unique experimental data exchange

  • Power management
    • DFN-6 AUR9718/ST1S09 high efficiency step-down 3.3V 1.5A DC converter;
    • CN3065 4.2V Lipo Battery Management System
    • USB-C connection for 5.0V 1.0A power supply from any power charger found on smartphones or tablets.
    • JST SH 2 pin 1.0mm for specific power supply applications (3.3V to 5.0V 1.0A DC)

  • Onboard sensors:
    • DFN-8 AHT20; temperature sensor with a precision of 0.1 C;
    • DFN-8 AHT20 humidity sensor;
    • LGA-14 LSM6DS3 a 6-axis accelerometer and gyroscope;
    • TEMT6000 Luminosity Sensor
    • reference voltage sensor calibration with temperature and humidity

  • External I2C connectivity for up to 118 sensors:
    • 1x I2C pin terminal connector (shared)
    • 1x 12 to 16bit (oversampling & digitization) digital terminal connector (shared)
    • 1x 12 to 16bit (oversampling & digitization) analogue terminal connector (shared) with manual scale selection ohmmeter via jumper pin
    • 12 to 16bit (oversampling & digitization) voltage reference analyser with temperature compensation

- Display - 1.69" TFT LCD Display with a resolution of 320x280 px
  • Enclosure This particular smart DAQ was designed to fit a well-known ABS enclosure commercially available on the internet. For instance here onAliExpress.
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