Info

Spring 2025: ESP32-S3-WROOM-1-N4

4Mb SPI-RAM

Micropython firmware

Firmware available here: https://micropython.org/download/ESP32_GENERIC_S3/

Notes:

• Uses the .bin extension.
• The Spring 2025 class uses the 4Mb flash
• Exact download: https://micropython.org/resources/firmware/ESP32_GENERIC_S3-SPIRAM_OCT-20250214-v1.25.0-preview.301.g8987b39e0.bin
• flashing issues:
  • https://github.com/orgs/micropython/discussions/10206

Hardware Information

• ESP32-S3 (pre-purchased)
  • ESP32-S3-WROOM-1-N4](surface mount version) Digikey / datasheet
  • ESP32 S3 Datasheet (Has more detail on functions)
  • ESP32 S3 Technical Reference Manual (Has details on I/O multiplexing, USB, and others)
• Vertical Thru Hole USB connector (pre-purchased) (digikey / datasheet)
• ESD suppressor: https://www.digikey.com/en/products/detail/panasonic-electronic-components/EZA-EG2A50AX/1137235?s=N4IgTCBcDaIKIC0CCcDiYkFYAMSAaIAugL5A

Example Schematics

Example 1 from here

Example 2 from here

Example 3 from here

Not suggested: see the discussion here for why

Python IDEs

1. ESP32 Installation and Setup
2. VSCode Setup and Usage(recommended)
3. Using the Pymakr Extension in VSCode(recommended)
4. Working With Thonny (not recommended)

External Resources

• https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf
• https://www.digikey.com/en/products/detail/espressif-systems/esp32-s3-devkitc-1-n32r8v/15970965
• https://docs.espressif.com/projects/esp-dev-kits/en/latest/esp32s3/esp32-s3-devkitc-1/index.html
• https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/get-started/index.html
• https://docs.cirkitdesigner.com/component/16654ec9-ae79-4f13-95ea-3bd816e65569/esp32-s3-devkitc-1-n8r2
• https://github.com/PIBSAS/ESP32-S3-WROOM-1-N16R8
• https://atsss.medium.com/esp32s3-and-micropython-development-environment-467248de1e4c
• https://hussamtalkstech.com/p/flashing-micropython-on-the-esp32-s3-microcontroller/
• https://imendizabal.medium.com/how-to-get-started-with-micropython-and-esp32-s3-193c26ef3a42