Iris Cube->Audio Signal Generator [ICL8038]

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Iris Cube series, ICL8038 audio signal generator. Output square wave (standard Sqr.) , triangle wave (standard Tri. ), sine wave (standard Sin.) , 20-20,000Hz, adjustable duty cycle. Dual power supply 10V or single power supply 20V power supply, dual 9-12V or single 24V are also available.

Form Factor: Iris Cube Basic Small ( https://oshwhub.com/Iris-Cube/ICBasic )

ICL 8038 is a precision oscillation integrated circuit with multiple waveform outputs. It can generate low-distortion sine waves, triangle waves, rectangular waves and other pulse signals from 0.001HZ to 300kHz by simply adjusting individual external components. The frequency and duty cycle of the output waveform can also be controlled by current or resistance. In addition, because the chip has an FM signal input terminal, it can be used to frequency modulate low-frequency signals.

Early works of unknown meaning, lightly sprayed.

The output is SMA and 2.54 pin header. The potentiometer marked DC is the duty cycle , the potentiometer marked FQ is the frequency , and the other two small ones are for fine adjustment.

When inputting a single power supply, the audio signal ground is separated by the capacitor and is not connected to other places. At this time, connecting the jumper cap behind the power terminal will short-circuit the signal ground terminal and the negative power terminal. Do not connect it when using dual power supplies .

I couldn't find a suitable background to take pictures, so I just took off my skirt (whispered)

The video demonstration uses the IrisCube->TDA1517/1519 power amplifier core board and the MicroWhale TV speaker. Demonstration uses a single power supply of 20V.

This is the 1517 core board ( https://oshwhub.com/Iris-Cube/ICTDA1517.Core ):

HiFi capacitor, LoFi wiring

Here is the assembly diagram :

The biggest feature of the Iris Cube is that it can be stacked . It would look great to build a Tower of Babel.

Test video (note the volume!