Hardware

In Kog, a pin is a signal. useButton watches a GPIO input, useAnalogRead streams ADC millivolts, and useDigitalWrite drives an output — all as fine-grained reactive values, so a pin edge updates the UI the same way useState does. The same code runs unchanged on a real board.

The simulator gives you virtual hardware: press the button to drive GPIO pin 0 (BOOT on a real board), and drag the slider to feed millivolts into the ADC on pin 34 (the light sensor on a CYD).

Hold the button — each press bumps the counter, cycles the RGB LED through red → green → blue (pins 4/16/17, the CYD's onboard LED, active-low), and logs to the console panel. Move the slider and watch the adc: … mV readout track it. This is the shipped examples/hardware-demo, seeded from source.