Hero

TinyS3 is the latest in our super popular range of "Tiny" development boards.

It's packed with amazing features and peripherals, wireless connectivity and stacks of Flash and PSRAM, all in the same tiny package size as the original TinyPICO!

Hero

Features

  • Dual 32bit Xtensa LX7 cores @ up to 240Mhz
  • RISC-V Ultra Low Power Co-processor
  • 2.4GHz Wifi - 802.11b/g/n
  • Bluetooth 5, BLE + Mesh
  • 8MB QSPI Flash
  • 8MB of extra QSPI PSRAM
  • 700mA 3.3V LDO Regulator
  • Low power RGB LED
  • ULTRA LOW Deep Sleep Current
  • USB-C Connector with back-feed protection
  • Native USB + USB Serial JTAG
  • LiPo Battery Charging
  • JST pads on the back supports PH connector
  • VBAT and 5V Sense Pins
  • 3D High Gain Antenna
  • 17 GPIO
  • Only 35 x 18mm in size
  • Compatible with TinyPICO & TinyS2
Board Dimensions
35mm x 17.8mm
Max Thickness
4.3mm at the USB-C end

Board Comparison Matrix

 
TinyS3
TinyS2
TinyPICO
MCU
ESP32-S3FN8
ESP32-S2FN4R2
ESP32-PICO-D4
Cores
2x Xtensa LX7
1x Xtensa LX7
2x Xtensa LX6
Speed
Up to 240Mhz
Up to 240Mhz
Up to 240Mhz
ULP CoProc
1x RISC-V, 1x FSM
1x RISC-V, 1x FSM
1x FSM
SRAM
512K
320K
520K
FLASH
8MB
4MB
4MB
PSRAM
8MB
2MB
4MB
GPIO
17
17
14
Native USB
CDC, OTG & USB Serial JTag
CDC & OTG
-
USB Conn
USB-C
USB-C
USB-C & Micro-B
WiFi
2.4Ghz b/g/n
2.4Ghz b/g/n
2.4Ghz b/g/n
Bluetooth
BLE 5 & Mesh
-
BT Classic & BLE 4.2
DAC
-
2x 8bit
2x 8bit
ADC
2x 12-bit SAR /20 chan
2x 12-bit SAR /20 chan
1x 12-bit SAR /18 chan
UARTs
3
2
3
ETH MAC
-
Yes
Yes
DMA Cont
5x TX chan, 5x RX chan
-
-
SDIO
Yes
-
Yes
Release Date
Feb 2022
July 2021
May 2019

 

Platforms

Shape

The TinyS3 ships with the latest version of CircuitPython with ESP32-S3 support.

It also ships with the UF2 bootloader, so you can easily update your TinyS3 with the latest CircuitPython firmware, whenever you desire.

Just plug your TinyS3 into your computer and it will appear in your filesystem as a USB flash drive! Just copy your code over, or edit your code directly on the drive. Coding a microcontroller has never been easier!

As newer versions of CircuitPython are released, you are able to update as you require from circuitpython.org

If you need to grab the shipping CircuitPython code that comes with the TinyS3,
you can grab the latest here

MicroPython has early support for the ESP32-S3 and I'm currently waiting for the PR for my ESP32-S3 boards to be merged, so they'll be included in the automatic firmware building and downloads page with the rest of my boards.

Until then, you can grab the firmware from my github repo using the following instructions for your OS:

Flashing MicroPython on to your TinyS3

If you would like to put MicroPython on your TinyS3, please follow these steps:
  • 1. Download the latest MicroPython firmware for the TinyS3 from the link above
  • 2. Put your TinyS3 into download mode by holding [BOOT], clicking [RESET] and then releasing [BOOT]
  • 3. Erase the flash on your TinyS3 to give you a clean start

    Windows
    esptool --chip esp32s3 -p COM(X) erase_flash
    Mac
    Please execute ls /dev/cu.usbm* to determine the port your board has enumerated as
    esptool.py --chip esp32s3 -p /dev/cu.usbmodem01 erase_flash
  • Linux
    esptool.py --chip esp32s3 -p /dev/ttyACM0 erase_flash
  • 4. Flash the downloaded firmware to your TinyS3

    Windows
    esptool --chip esp32s3 -p COM(X) write_flash -z 0x0 tinys3_firmware_1_18.bin
    Mac
    Please execute ls /dev/cu.usbm* to determine the port your board has enumerated as
    esptool.py --chip esp32s3 -p /dev/cu.usbmodem01 write_flash -z 0x0 tinys3_firmware_1_18.bin
  • Linux
    esptool.py --chip esp32s3 -p /dev/ttyACM0 write_flash -z 0x0 tinys3_firmware_1_18.bin
  • 5. Restart your TinyS3 by pressing the [RESET] button
  • 6. And that’s it! Your’e done! Happy coding!

For more information about using MicroPython, visit this link.

Shape

ESP32-S3 support in the IDF is part of the v4.4 release. The latest IDF is v5.0, but it's in early development, so I recommend you stick to the v4.4 release branch for the time being as there are some low level breaking changes in v5.

Check out the ESP32-S3 IDF docs for information on how to install it and develop for the ESP32-S3:
Shape

Arduino support for the ESP32-S3 is now available in the 2.0.3 update!
You can install this version from the Arduino boards manager
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It's still early support, so please be patient as new features get added and issues get resolved, but it's awesome to have Arduino support available already!

If you have not already setup your Arduino IDE environment to work with ESP32, please follow the official Espressif ESP32 Arduino Core instructions to install it.

If you want to live on the bleeding edge, feel free to stay on the latest version by cloning this repo instead: Shape

Downloads

This is where you can find download links for TinyS3 specific things like the Schematic, 3D model, KiCAD footprint and more!

TinyS3 Schematic

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github

The Unexpected Maker ESP32-S3 github Repo includes the following items:

  • 3D STEP file for the TinyS3
  • KiCAD 6 symbol file for the TinyS3 that you can use when integrating one of them into one of your PCB designs
  • KiCAD 6 footprint file for the TinyS3
  • PDF Schematic for the TinyS3
  • Hi-res pinout reference card for the TinyS3
  • Fritzing parts (soon)
  • Helper libraries for Arduino, CircuitPython and MicroPython
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ESP32-S3 Datasheet

If you need more detailed information about the ESP32-S3, including full IO capabilities and other functionality, please refer to the ESP32-S3 Datasheet from Espressif.