Classic MIDI FeatherWing: Feather-compatible classic MIDI interface. Isolated TRS or DIN-5 input, buffered TRS or DIN-5 output. Signal activity LEDs.

AD5245 Digital Potentiometer Breakout: A small breakout board for testing the 10K AD5245 digital potentiometer.

AD9833 Precision Waveform Generator FeatherWing: An Adafruit Feather-compatible module. The Waveform Generator produces an op-amp buffered sine, triangle, or square wave output with a practical frequency range of approximately 0 to 300KHz with 0.1Hz resolution. Frequency accuracy and stability is determined by the 25MHz clock source. Waveform Generator control is via the Feather SPI bus; chip select is provided by the Feather’s D6 logic pin. Output signal peak-to-peak amplitude is adjustable with a maximum unipolar output of slightly less than 3.3 volts. The wing derives its power from the host Feather’s 3.3V power.

A stacking breakout board to adapt the ItsyBitsy M4 Express for use with a standard breadboard or protoboard. Additional wire or pin/header connections, a battery jack, and a 3/5v Stemma (I2C) jack are included. M2.5 screw ears for panel mounting.

Eurorack STEMMA Dual 12-Bit DAC: 3HP Eurorack STEMMA 3v3 compatible dual 12-bit DAC interface with buffered +5v TS outputs.