Arduino Modulino Buttons

Three tactile push buttons, each with its own yellow LED. Perfect for control panels.

Tested on a real boardHigh confidence

From $7.63

Say it to PAL

“Play a tone when I press button A.”

The code PAL writes

p.onSensorChange('modulino-buttons', 'buttons', (value) => {
  if (value === 0) return; // release
  if (value & 1) p.write('modulino-buzzer', 'tone', { frequency: 440, duration_ms: 200 });
});
await p.waitUntilStopped();

“Light up whichever button I am holding.”

The code PAL writes

p.onSensorChange('modulino-buttons', 'buttons', (value) => {
  p.write('modulino-buttons', 'setLed', {
    ledA: (value & 1) ? 255 : 0,
    ledB: (value & 2) ? 255 : 0,
    ledC: (value & 4) ? 255 : 0
  });
});
await p.waitUntilStopped();

When to pick it

3 physical buttons (A, B, C) with built-in yellow LEDs (single colour).

About it

The Arduino Modulino Buttons features three tactile push buttons, each with its own single-colour yellow LED. Great for creating control panels, user input interfaces, or multi-choice selection.

Facts

Tested

Tested on a real boardHigh confidence

We connected it to a Raspberry Pi, read it over its real connection, checked that it gives accurate readings through Palpable, and signed it off.

I2C address

0x3E

The Arduino Modulino Buttons answers at I2C address 0x3E. Its address can be changed in software.

Current

20 mA

The catalog lists a typical draw of 20 mA for the Modulino Buttons, copied from the maker’s description and not measured by Palpable.

Board size

41 × 25.36 mm

The Modulino Buttons board measures 41 × 25.36 mm and stands 6.1 mm tall with its parts. It has 4 mounting holes. These dimensions are from the datasheet.

Chip

STM32C011F4

Its microcontroller is the STMicroelectronics STM32C011F4.

STM32C011F4 datasheet

Free to reuse

Every fact here is open data under CC BY 4.0. Copy it into your own docs or code, and credit Palpable. Download it

This record was last changed on October 10, 2026.

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