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SparkFun Thing Plus – ESP32-S2 WROOM

SparkFun Thing Plus – ESP32-S2 WROOM

Product #: 137954
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Features

SparkFun Thing Plus – ESP32-S2 WROOM Features

  • ESP32-S2 Module
    • 21 Available GPIO
      • 16x 12-bit ADC Channels
      • 2x 8-bit DAC
      • 14x Capacitive Touch Sensing
      • 4x SPI (only one is configured by default in the Arduino IDE)
      • 1x I2S
      • 2x I2C (only one is configured by default in the Arduino IDE)
      • 2x UART (only two are configured by default in the Arduino IDE, one UART is used for bootloading/debug)
      • 8x PWM Channels
  • Thing Plus (or Feather) Form-Factor:
    • Dimensions: 2.55″ x 0.9″
    • Two Mounting Holes:
      • 4-40 screw compatible
    • 28 PTH Pins
    • USB-C Connector
    • 2-pin JST Connector for a LiPo Battery (not included)
    • 4-pin JST Qwiic Connector
  • LEDs:
    • CHG – Yellow battery charging indicator
    • 13 – Blue status/test LED (GPIO 18)
  • Buttons:
    • 0
    • Reset
  • JTAG/SWD PTH Pins

ESP32-S2 WROOM General Features:

  • Xtensa® Single-Core 32-bit LX7 Microprocessor (up to 240MHz)
    • RISC-V ULP Coprocessor
    • 128KB ROM and 320KB SRAM
    • 4MB of Embedded SPI Flash Storage
  • Cryptographic Hardware Accelerators
    • AES, ECB/CBC/OFB/CFB/CTR, GCM, SHA, RSA, and ECC (Digital Signature)
  • Physical Security Features
    • Transparent external flash and RAM encryption (AES-XTS)
    • Secure Boot feature ensures only signed firmware (with RSA-PSS signature) is booted
    • HMAC and Digital Signature modules use software inaccessible keys to generate SHA-MAC and MAC signatures
  • Integrated 802.11 b/g/n WiFi 2.4GHz Transceiver (up to 150Mbps)
  • Integrated Temperature Sensor (-20°C to 110°C)
  • Operating Voltage: 3.0 to 3.6V
    • WiFi: 310mA (peak)
    • Light-Sleep: 550µA
    • Deep-Sleep: 20-235µA

With the ESP32-S2’s IoT and connectivity based application focus, this board provides a robust option for connected projects and applications.

All of that can sound a little daunting, but we assure you that the ESP32-S2 Thing Plus is anything but! SparkFun’s Thing Plus footprint only adds to the board’s feature set with the LiPo charging & power circuit making it perfect for home automation or wearable tasks. Possibly the biggest change for the S2 is the ULP (RISC-V) Co-processor. This allows you even more options to balance performance with power consumption over the original ESP32.

Additional new features of the ESP32-S2 include dedicated output pins for, DVP Camera Interface, LCD Interface, and integrated temp sensor. If your project needs even more peripherals, we have included a Qwiic connector on board for easy integration into any of SparkFuns Qwiic ecosystem equipped sensors and accessories. You will also find that this Thing Plus utilizes a USB-C connector instead of the microB USB found on its predecessor.

Keep in mind that while the ESP32-S2 does include an Integrated 802.11 b/g/n WiFi Transceiver allowing for speeds up to 150Mbps, it lacks the Bluetooth® capabilities of the original ESP32 module. Additionally, the SRAM & ROM have been reduced. However, the support for larger external storage should easily be able to compensate for this.

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