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content/hardware/11.accessories/modulino-nodes/modulino-buttons/tutorials/how-buttons-ardu
- how-to-buttons-ardu.md

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`@@ -45,13 +45,13 @@ When scanning for I2C address on the bus, you might find the modulino using the`
`45`	`45`
`46`	`46`	`Later in this article we teach how to [change the address](#how-to-change-i2c-address).`
`47`	`47`
`48`		`-### Pinout`
	`48`	`+## Pinout`
`49`	`49`
`50`	`50`	`The tactile buttons and LEDs are the core components of this module. These input and output devices are controlled by an onboard STM32 microcontroller, which supports digital communication (I2C), meaning it connects directly to the I2C bus on the module without requiring additional conversion circuitry.`
`51`	`51`
`52`	`52`	`![Arduino Buttons Pinout](assets/ButtonsPinouts.png)`
`53`	`53`
`54`		`-#### 1x10 Header`
	`54`	`+### 1x10 Header`
`55`	`55`
`56`	`56`	`\| Pin \| Function \|`
`57`	`57`	`\|-------\|----------------\|`
`@@ -77,7 +77,7 @@ The tactile buttons and LEDs are the core components of this module. These input`
`77`	`77`	`- B: Button B – This pin connects directly to button B.`
`78`	`78`	`- C: Button C – This pin connects directly to button C.`
`79`	`79`
`80`		`-#### 1x4 Header (I2C)`
	`80`	`+### 1x4 Header (I2C)`
`81`	`81`
`82`	`82`	`The pinout for the Modulino Buttons is shown below. While the recommended connection method is via the QWIIC connectors, this solderable header provides a connection option when using the modulino with a non-QWIIC compatible board.`
`83`	`83`

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