DESCRIPTION This TinyShield makes it incredibly easy to add audio support to your TinyDuino projects. It has an onboard DAC, filter, and amplifier for great sound quality. It can play any size uncompressed 22kHz, 16bit mono Wave files (.wav) directly off a microSD card (a microSD TinyShield is also required for this). The audio output is mono on both the L and R channels, and uses a standard 3.5mm headphone jack connector. An onboard potentiometer can be used to control the volume. This TinyShield is completely compatible with the Arduino waveHC Library from Adafruit for playing wave files from a microSD card. This library is not compatible with SAMD21 processors, so this TinyShield is best used with the TinyDuino that uses the ATmega328p processor. Learn more about the TinyDuino Platform TECH SPECS To see what other TinyShields this will work with or conflict with, check out the TinyShield Compatibility Matrix Audio Specs Microchip MCP4921 12-bit Digital-to-Analog Converter (DAC) Audio Output: mono on both the L and R channels on standard 3.5mm headphone jack Volume Control: Manual onboard potentiometer Wave file streaming: Can play any size uncompressed 22kHz, 16bit mono Wave files from a microSD card TinyDuino Power Requirements Voltage: 3.0V - 5.5V Current: 5 - 20mA. Due to the current, this board should not be run using the TinyDuino coin cell option Pins Used 2 - DAC_CS: This signal is the chip select for the audio DAC 3 - DAC_SCK: This signal is the serial clock for the audio DAC 4 - DAC_SDI: This signal is the serial data in for the audio DAC Dimensions 24.14mm x 20mm (1.07 inches x .787 inches) Max Height (from lower bottom TinyShield Connector to upper top TinyShield Connector): 7.81mm (0.307 inches) Weight: 2.1 grams (.07 ounces) NOTES The 3.5mm jack extends past the end of the board and is fairly tall. Normal size TinyShields (20mm x 20mm) can stack on top of this TinyShield; however, boards that are longer (like the WiFi TinyShield) cannot be stacked directly on top. DOWNLOADS Microchip MCP4921 DAC Datasheet Schematic Eagle Files Sample Arduino code (use the Adafruit waveHC Library) CAD 3D and 2D Files LEARN
