Arduino PRIMO (A000135)  STM32F103,ESP8266,nRF52832

The Arduino Primo is the first board developed in cooperation with Nordic Semiconductor. It brings new benefits for the IoT world all on one platform: advanced 32-bit microcontroller architecture, bluetooth low energy (BLE), Wi-Fi, near-field communications (NFC), and infrared (IR) transmit and receive capability.

There are three onboard microcontrollers:

• nRF52832, the main Arduino microcontroller with integrated BLE and NFC
• STM32f103, a service microcontroller used for advanced debugging and programming of the other microcontrollers
• ESP8266, for Wi-Fi and related internet connectivity functions.

The board has:

• 14 digital input/output pins (of which 12 can be used as PWM outputs)
• 6 analog inputs
• 64 MHz ceramic resonator
• micro-USB connector
• ICSP header
• battery charger
• Infrared receiver and transmitter
• NFC antenna
• BLE interface
• Buzzer
• two service buttons
• LEDs
• reset buttons (to reset the various microcontrollers).

Documents:

• Getting Started Guide
• Technical Specifics
• Schematic