Waveshare ESP32-S3-WROOM-1-N8R8 Development Board w/o Header

First, install the ESP32 board package via the Arduino Boards Manager. Select 'ESP32S3 Dev Module' as your board. Connect the board via USB Type-C, choose the correct COM port, and set the Flash Mode to 'QIO' and PSRAM to 'OPI PSRAM'. You can then upload sketches using the standard upload procedure. The onboard USB-to-serial chips handle the communication automatically. (Word count: 50)

The castellated (half-hole) edges allow the module to be surface-mounted directly onto your custom PCB, saving vertical space and creating a more robust mechanical connection than headers. To solder, apply solder paste to the pads on your carrier board, place the module carefully aligning the castellated holes, and use a reflow oven or hot air gun to melt the solder. Ensure all pads make proper contact for power and GPIO signals. (Word count: 50)

Yes, the ESP-IDF framework fully supports the concurrent use of both memories. The 8MB Flash is used for storing firmware, filesystem, and static data. The 8MB PSRAM (Octal SPI PSRAM) is mapped into the MCU's address space and can be used as heap memory for dynamic allocations, significantly increasing available RAM for buffers, graphics, or machine learning tensors. Enable PSRAM in your project's menuconfig under 'Component Config' -> 'ESP32S3-Specific'. (Word count: 50)

Active current depends on CPU load and radio activity, typically ranging from 80mA to 250mA. The ESP32-S3 supports ultra-low-power sleep modes. In Deep Sleep, with RTC and ULP co-processor active, consumption can drop to around 10µA to 150µA, making it ideal for battery-powered sensors that wake periodically to transmit data. Configure sleep modes using the `esp_sleep` APIs in ESP-IDF or corresponding libraries in Arduino. (Word count: 50)