We wanted to make audio-effects easier so in addition to a class D audio amp, there's also a stereo headphone jack that is connected to the two DACs on the chip. Use it when you want an externally sound amplifier box for big effects. For small portable effects, the built-in amp can drive 8 ohm speakers up to 1 Watt.
On each side are JST-PH plugs for connecting external devices. The 3-pin JSTs connect to analog/timer pins on the SAMD51, so you can use them for sensors or GPIO devices. The 4-pin JST connector connects to the I2C port and you can fit Grove connectors in it for additional hardware support. For the PDM mic port, you can use this cable to wire to a PDM mic.
This is by far the cutest, creepiest and most incredible development board we've made so far! Gaze upon these features:
- ATSAMD51G19 Cortex M4 microcontroller running at 120MHz with 512KB Flash, 192KB RAM
- 8 MB QSPI flash for storing graphics and sound effects
- Two 240x240 IPS TFT displays each on their own SPI bus
- Beautiful silkscreen with a boop-able nose that is a capacitive touch pad
- Lipoly battery charge circuit for portable use
- Stereo headphone jack out, for sound effects via an amplifier
- Mono speaker driver for smaller 8 ohm 1W speakers
- One 4 pin STEMMA JST connector for I2C connection (also Grove compatible)
- Two 3 pin STEMMA JST connectors with digital/analog/PWM for servos, sensors, etc
- One 4 pin JST SH port for connecting an optional PDM microphone
- Backlight controls
- Three tactile buttons
- Light sensor
- On/Off Switch and reset button
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