The Spresense extension board provides pin-compatibility with selected Arduino shields along with an SD card slot, a headphone jack and multiple microphone pins.

• Audio input / output: 4-ch analog microphone input or 8-ch digital microphone input, headphone output
• Digital input / output: 3.3V or 5V digital I/O
• Analog input: 6-ch (5.0V range)
• External memory interface: microSD card slot
• Size: 68.6 mm x 53.3mm
• Model name: CXD5602PWBEXT1

Any questions? Click here for SONY Spresense FAQs

Github links: Spresense Arduino Library source git clone Spresense SDK source git clone --recursive

Building on SONY's extensive experience of mobile phone technology, Spresense is a compact development board based on their power-efficient multi-core microcontroller CXD5602. It allows developers to create IoT applications in a very short time and is supported by the Arduino IDE as well as the more advanced NuttX based SDK.

Spresense is equipped with a real-time clock, 8MB of Flash memory, GPS receiver and supports high-resolution audio codecs. The board allows for IoT versatility and can be developed for a vast range of uses, such as a drone utilizing the GPS and high-performance processor, a smart speaker utilizing high-resolution audio recording and playback as well as the built-in full-digital amplifier, or a low-power time-lapse camera utilizing the camera interface.

This main board interfaces with the extension board which provides audio and digital I/O as well as an analog input and access to the microSD card slot.

• CPU: ARM® Cortex®-M4F x 6 cores
• Maximum clock frequency: 156MHz
• SRAM: 1.5MB
• Flash memory 8MB
• Digital input / output: GPIO, SPI, I2C, UART, I2S
• Analog input: 2-ch (0.7V range)
• GNSS: GPS(L1-C/A), QZSS(L1-C/A), GLONASS(L1), WAAS, QZSS(L1-S)
• Camera input: dedicated parallel interface
• Size: 50mm x 20.6mm
• Model name: CXD5602PWBMAIN1

Any questions? Click here for SONY Spresense FAQs

Github links: Spresense Arduino Library source git clone Spresense SDK source git clone --recursive