The ESP32 is a powerful microcontroller made by Espressif Systems. It’s widely used in IoT, automation, sensors, and embedded projects because it combines:

ESP32 With 16M Flash:

• The flash chip stores firmware, SPIFFS/LittleFS filesystem, and OTA update partitions.
• With 16MB, you can store:
  Larger programs
  More complex libraries (e.g., AI, image processing, OCPP stacks, etc.)
  Bigger web server files (HTML, CSS, JS)
  Larger SPIFFS/LittleFS storage (for logs, configuration, or databases)
  Multiple OTA firmware slots

Specification:

• WiFi Protocols: 802.11 b/g/n
• Frequency: 2.4 Ghz ~ 2.5 Ghz
• Bluetooth Protocols: BLE v4.2 BR/EDR and BLE specification
• UFL Connector for Antenna
• On Chip Hall Sensor
• Integrated Crystal of 40 Mhz
• Integrated SPI Flash of 16 MB
• Recommended Voltage: 3.3 V
• Operating Current: Average 80 mA
• Minimum Current Delivered by Power Supply: 500 mA
• Brand: ESPRESSIF
• RoHS / REACH Certified

Partitioning Important for 16M:

If you want to use all 16MB, you may need a custom partition table in Arduino IDE / ESP-IDF.
For example, enabling more space for:

• APP partitions (for OTA updates)
• SPIFFS/LittleFS (for file storage)