# ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM ACH-ESP32-S3F16R8 | ESP32-S3 Dev Board, 16MB Flash, 8MB PSRAM, Qwiic I2C - **Seller:** [Achiraware Electronics](https://lectronz.com/stores/achiraware), Vila Nova de Gaia, Porto, Portugal - **Price:** €17.00 (EUR, before shipping and taxes) - **Availability:** In stock - **Categories:** ESP32, Home automation, Robotics - **Country of origin:** Portugal - **HS code:** 85423190 - **Product page:** https://lectronz.com/products/ach-esp32-s3f16r8-esp32-s3-16mb-flash-8mb-psram ## Links - [Documentation](https://achiraware.com/product/ach-esp32-s3f16r8/) - [Code](https://github.com/AchirawareElectronics/ACH-ESP32-S3-F16R8) - [Design Files](https://github.com/AchirawareElectronics/ACH-ESP32-S3-F16R8/tree/main/hardware) - [Schematics](https://github.com/AchirawareElectronics/ACH-ESP32-S3-F16R8/raw/main/hardware/schematic.pdf) ## Images ![ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQzNDksInB1ciI6ImJsb2JfaWQifX0=--ab607b9fdcdfab1866c69c2e665418d4a674c2e2/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJKUEciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--a1419a086f227676aca33a49760ac51e58b523e3/DSC_0481.JPG) ![ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQzNTMsInB1ciI6ImJsb2JfaWQifX0=--5408ce813a0d4ea750a630c8aeacc7fcdfc8abb0/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJKUEciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--a1419a086f227676aca33a49760ac51e58b523e3/DSC_0456%20-%20copia.JPG) ![ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQzNTcsInB1ciI6ImJsb2JfaWQifX0=--f4430e4035a967ad1243750984b738239b11d8ba/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/ACH-ESP32-S3F16R8_Hardware_Highlights_1x1.png) ![ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQzNjEsInB1ciI6ImJsb2JfaWQifX0=--c9ff65b5bdc6869dc65a3bc284f23f43e886fe25/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/ACH-ESP32-S3F16R8_Pinout_Diagram_1x1.png) ![ACH-ESP32-S3F16R8: ESP32-S3 16MB Flash 8MB PSRAM](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQzNjUsInB1ciI6ImJsb2JfaWQifX0=--d41b1cd0e8210703730f002a4527b02d255f32d4/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/ACH-ESP32-S3F16R8_Hardware_Highlights.png) ## Description ### What is it? The **ACH-ESP32-S3F16R8** is an industrial-grade, maker-friendly ESP32-S3 development board engineered and assembled in Vila Nova de Gaia / Porto, Portugal. Powered by the **Espressif ESP32-S3R8** dual-core Xtensa LX7 SoC @ **240 MHz** with vector instructions for Edge AI/TinyML, this board is built to eliminate memory bottlenecks. It packs **16 MB Quad-SPI NOR Flash** and **8 MB Octal PSRAM (OPI)**, making it the ultimate board for graphic-intensive LVGL user interfaces, retro emulation, audio DSP pipelines, and heavy MicroPython/CircuitPython applications. ### What makes it special? - **Massive 16MB Flash + 8MB Octal PSRAM:** Store large neural network models, audio wavetables, or complex LittleFS filesystems without running out of RAM. - **Solderless AchiWire I2C Port (JST SH 1.0mm 4-Pin):** Plug-and-play compatible with the **SparkFun Qwiic** and **Adafruit STEMMA QT** ecosystem. Connect OLED displays, IMUs, environmental sensors, and RTCs instantly without breadboard clutter. Includes onboard 4.7kΩ pull-up resistors. - **Rock-Solid 1A LDO Regulator:** Uses a Texas Instruments TLV75733 low-noise 3.3V 1000mA regulator with thermal protection. Cleanly supplies heavy 2.4 GHz Wi-Fi bursts and power-hungry external sensor arrays from 3.3V up to 5.5V VIN. - **Onboard WS2812 Smart RGB LED:** Addressable multi-color LED on **GPIO 10** for instant visual feedback, network status, or animations. - **Dual Form Factor:** Standard 2.54mm breadboard-friendly pitch plus **castellated solder pads** on all edges, allowing you to use it on a breadboard or surface-mount it directly onto your own custom carrier PCB. - **Engineered & Hand-Assembled in Europe:** Built with premium components in Porto, Portugal 🇵🇹, ensuring fast, customs-free delivery across the entire European Union. --- ### Technical Specifications - **SoC:** Espressif ESP32-S3R8 (Dual-Core 32-bit Xtensa LX7 @ 240 MHz) - **Vector Acceleration:** Hardware support for AI/ML neural network instructions - **Flash Memory:** 16 MB Winbond W25Q128 High-Speed QSPI NOR Flash - **PSRAM:** 8 MB Embedded Octal SPI (OPI) PSRAM - **SRAM:** 512 KB Internal SRAM + 16 KB RTC SRAM - **Wireless:** 2.4 GHz Wi-Fi 4 (802.11 b/g/n) + Bluetooth 5.0 LE with tuned 3D PCB trace antenna - **USB Connector:** Full 16-pin USB Type-C with ESD protection diodes (Native USB-CDC console + USB-OTG) - **Power Input (VIN):** 3.3V to 5.5V (via VIN pin or 5V via USB-C) - **3.3V Output:** Up to 1000 mA (Texas Instruments TLV75733) - **I2C Connector:** 4-pin JST SH 1.0mm (AchiWire / Qwiic / STEMMA QT compatible) - Pin 1: GND | Pin 2: +3.3V | Pin 3: SDA (GPIO 6) | Pin 4: SCL (GPIO 5) - **Indicators:** Green Power LED (3.3V rail) + Addressable WS2812 RGB LED (GPIO 10) - **Buttons:** Tactile Reset (CHIP_PU) + Boot Button (GPIO 0) - **Pin Pitch:** 2.54 mm (0.1") with castellated SMD edges --- ### Ecosystem Compatibility - **Arduino IDE:** Full support via the official Espressif ESP32 board package (`ESP32S3 Dev Module`, OPI PSRAM, 16MB Flash). - **MicroPython / CircuitPython:** Fully compatible with official ESP32-S3 builds with Octal PSRAM. - **ESP-IDF:** Native support for professional C/C++ embedded engineering. --- ### What's included in the box? - 1× ACH-ESP32-S3F16R8 Development Board (tested and pre-flashed) - 2× 14-pin male headers (2.54mm pitch, loose) - Packed in an ESD anti-static protective bag *(Note: Solderless JST SH 4-pin AchiWire cables available as an add-on or in our accessories section).* --- ### Open Source Hardware & Documentation Schematics, full pinout charts, 3D STEP models, and code examples are open source on GitHub: 👉 https://github.com/AchirawareElectronics/ACH-ESP32-S3-F16R8 ## Shipping policy At AchiraWare Electronics, all our boards and hardware products are carefully tested, packed in anti-static ESD packaging, and dispatched directly from our studio in Porto, Portugal. 1. Shipping Destinations We ship to customers across Portugal, Spain, and throughout the European Union. If you are located outside the EU, please reach out to us at customerservice@achiraware.com before placing an order. 2. Processing & Dispatch Times In-stock items: Orders are processed and dispatched within 1 to 2 business days (Monday to Friday, excluding national holidays in Portugal). Once your package has been shipped, you will receive an email confirmation with your tracking number. 3. Estimated Delivery Times Portugal (Continental): 24 to 48 hours (via CTT / Express Courier). Spain & Iberian Peninsula: 2 to 4 business days. Rest of the European Union: 3 to 7 business days depending on destination country and local postal services. 4. Shipping Costs Shipping rates are calculated dynamically at checkout based on your destination country and the weight/dimensions of your order. 5. Customs & Import Duties (EU Orders) Since all orders are shipped from Portugal (EU Member State), there are no customs duties or import tariffs for orders delivered within the European Union Single Market. 6. Damaged or Lost Shipments If your order arrives damaged or appears to have been opened in transit, please take photographs of the outer packaging and contents and notify us within 48 hours at customerservice@achiraware.com so we can resolve it immediately.