Arduino Star Otto

The Star Otto is the first Arduino board featuring the STM32F469 processor with WiFi.


The Arduino Star series of boards feature ST Microelectronics processors, and the first of the series is the Star Otto. The Otto combines the power of the STM32F469 processor and an Espressif ESP8266 for WiFi, with several on-board peripherals, such as a micro-SD slot, connectors for a camera and an LCD, USB Host, headphone and speaker output, and an on-board stereo microphone.




  • Processor ESP8266
  • Architecture Tensilica Xtensa LX106
  • Operating Voltage 3.3 V
  • Flash Memory 4 MB
  • RAM 8 MB instruction, 12 MB data
  • Clock Speed 80 MHz
  • WiFi 802.11 b/g/n 2.4 GHz
  • Wake up time < 2ms


  • Microcontroller STM32F469BI
  • Architecture ARM Cortex-M4
  • Operating Voltage 3.3 V
  • Flash memory 2 MB
  • SRAM 384KB + 16MB ext SDRAM + 128KB EEPROM
  • Clock Speed 180 MHz
  • Analog I/O Pins 14xADC + 2xDAC
  • DC Current per I/O Pins 25 mA
  • Other features DSI-IF for Display, Camera IF, Audio output, Stereo Mic


  • Input Voltage 5-15 V
  • Digital I/O Pins 54
  • PWM Output 12
  • PCB Size 101.5 x 53.3 mm
  • Weight 34 g