This project demonstrates two techniques for making images on an oscilloscope using CircuitPython and the analogue output(s) found on many Adafruit boards.
The first is an unusual technique using the oscilloscope trigger feature and normal x-axis timebase with a singledigital to analogue converter (DAC) output on a Circuit Playground Express (CPX) board. A computer running Python with the imageio library is required to convert bitmaps into a suitable format for playback on the CPX board.
The second is the more common X-Y vector technique, using a PyGamer with its two DAC outputs.
Any SAMD21 (M0) or SAMD51 (M4) board can be used (Adafruit sells many available here). No additional hardware is required beyond connections to the oscilloscope probes.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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