SparkFun QuickLogic Thing Plus – EOS S3


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SKU: 1062364
  1. Microcontroller chip: Arm® Cortex®-M4F Microcontroller
  2. Power Supply: Regulated 3.3 V
  3. Clock Frequency:80 MHz
  4. SRAM:512 KB
  5. Weight:6 gm



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Brand: SparkFun
Category: Advance Development Boards
Tags: machine learning board

The SparkFun QuickLogic Thing Plus EOS™ S3, is a small form factor system ideal for enabling the next generation of low-power Machine Learning (ML) devices. The QuickLogic Thing Plus is powered by QuickLogic’s EOS S3, the first FPGA-enabled Arm Cortex©-M4F MCU to be fully supported with Zephyr RTOS and FreeRTOS. Unlike other development boards which are based on proprietary hardware and software tools, the QuickLogic Things Plus is based on 100% open-source hardware, compatible with the Feather form factor, and is built around 100% open source software (with support for FreeRTOS, Zephyr, Minden, Docker, and SymbiFlow).

Between the onboard LiPo battery connector and charging circuitry, wake-on-sound PDM microphone, and low-power, three-axis accelerometer, this Thing Plus board is ideal for wearable, voice, gesture sensing applications. The strong firmware support for the microphone and accelerator makes it easy to move sensor data into the embedded FPGA. From there, you can use SensiML, TensorFlow Lite, or other tools to train and run embedded machine learning algorithms specific to your application. The board also includes a Qwiic connector to quickly interface with an ecosystem of 150+ I2C-compatible boards such as sensors, RFID readers, displays, keypads, and relays.


  1. Single Cell LiPo battery
  2. On-board charging circuitry – Microchip MCP73831/2
  3. Standard LiPo JST connector
  4. SWD programming connector for use with USB-TTL converter
  5. USB data signals are tied to eFPGA programmable logic
  6. UART available via I/O headers

Package Includes:

1 x SparkFun QuickLogic Thing Plus – EOS S3

Input Voltage (V)


Microcontroller Chip

Arm® Cortex®-M4F Microcontroller

Maximum Clock Frequency (MHz)



512 KB

Interface Type


USB Type

USB Type-C

Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 9.5 × 6 × 1 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: USA