Electrosmith Daisy

Features:

• ARM Cortex-M7 @ 480 MHz (STM32)
• stereo audio I/O (96 kHz @ 24-bit)
• 2 DAC outs (12-bit)
• 12 ADC ins
• I2C, SPI, USART, I2S, SAI, SDIO
• USB data pins broken out

GPIO pins are 5 V tolerant except for pins 24, 25, 28, 39, and 30. Audio inputs are AC coupled and accept at most 3.6 Vpp (-1.8 V – +1.8 V). Vin can range from +4 to +17 V.

For all applications, AGND (pin 20) must be connected to DGND (pin 40).

A breakout board for the Seed with the following I/O components:

• stereo line in
• stereo line out
• headphone out with dedicated volume control
• TRS MIDI in
• microSD card slot
• 2 push buttons
• 2 pots
• 2 RGB LEDs
• 1 encoder with push button

Additionally, the following pins on the Seed are broken out:

• D7/SPI1 CS
• D8/SPI1 SCK
• D9/SPI1 MISO
• D10/SPI1 MOSI
• D11/I2C SCL
• D12/I2C SDA
• A7/D22 (ADC 7)
• A1/D16 (ADC 1)
• 3.3 V Analog
• 3.3 V Digital
• Vin
• GND

Daisy can be programmed using a variety of languages — C++, Arduino, Pure Data, and Max/MSP Gen~. We will focus below on the C++ libraries.

• libDaisy documentation
• DaisySP documentation
• Seed datasheet (v1.0.5)