OMGS3 is the world’s smallest, fully-featured ESP32-S3 board/module!
It's packed with amazing features and peripherals, wireless connectivity and stacks of FLASH and PSRAM, and can be surface mounted to a carrier PCB or have wires soldered to the pads.
- Dual 32bit Xtensa LX7 cores @ up to 240Mhz
- RISC-V Ultra Low Power Co-processor
- 2.4GHz Wifi - 802.11b/g/n
- BLE 5.0 + Mesh
- 8MB QSPI FLASH
- 2MB of extra QSPI PSRAM
- 700mA 3.3V LDO Regulator
- ULTRA LOW Deep Sleep Current
- Low power RGB LED
- Native USB + USB Serial JTAG
- D+/D- pins for external USB connector
- LiPo Battery Charging
- I2C Battery Fuel Gauge
- 3D High Gain Antenna
- 17 GPIO
- Only 25 x 10mm in size
Board Dimensions
25mm x 10mm
Max Thickness
2.6mm
Board Comparison Matrix
OMGS3
NanoS3
TinyPICO Nano
MCU
ESP32-S3-PICO
ESP32-S3FN8
ESP32-PICO-D4
Cores
2x Xtensa LX7
2x 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
512K
520K
FLASH
8MB
8MB
4MB
PSRAM
2MB
8MB
4MB
GPIO
17
27
14
VBUS Sense
YES
-
-
VBAT Sense
I2C Fuel Gauge
-
-
Native USB
CDC, OTG & USB Serial JTAG
CDC, OTG & USB Serial JTAG
-
WiFi
2.4Ghz b/g/n
2.4Ghz b/g/n
2.4Ghz b/g/n
Bluetooth
BLE 5 & Mesh
BLE 5 & Mesh
BT Classic & BLE 4.2
DAC
-
-
2x 8bit
ADC
2x 12-bit SAR /20 chan
2x 12-bit SAR /20 chan
2x 12-bit SAR /18 chan
HW UARTs
3
3
3
ETH MAC
-
-
Yes
DMA Controller
5x TX chan, 5x RX chan
5x TX chan, 5x RX chan
-
SDIO
Yes
Yes
Yes
RGB LED
1010 Neopixel
1515 Neopixel
-
Antenna
Onboard
Onboard or External u.FL
Onboard
IO Connection
1.27mm Bottom Pads
1.27mm Castellations
1.27mm Castellations
Dimentions
25 x 10 x 2.6mm
27 x 12.7 x 2.4mm
27 x 12.7 x 2.4mm
Release Date
August 2024
July 2023
May 2020
Platforms
Please check out the new PLATFORMS area of the Getting Started guide to find out all about developing for your new board in a range of different languages!
Downloads
This is where you can find download links for OMGS3 specific things like the Schematic, 3D model, KiCAD footprint and more!
OMGS3 Schematic
GitHUB
The Unexpected Maker ESP32-S3 GitHUB Repo includes the following items:
- 3D STEP file for the OMGS3
- KiCAD 8 symbol file for the OMGS3 that you can use when integrating one of them into your PCB designs
- KiCAD 8 footprint file for the OMGS3
- KiCAD 8 OMGS3 carrier PCB reference design (*soon*)
- PDF Schematic for the OMGS3
- Hi-res pinout reference card for the OMGS3
- Helper libraries for CircuitPython - Arduino and MicroPython (*soon*)
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.