GPIO driver for Digital Outputs


The GPIO driver for Digital Outputs is used to set the digital level of a selected pin on the Quantum Builder Base. The selected pin includes an optional initial value.

Driver Parameters

The GPIO driver for Digital Inputs has two parameters that have to be configured:


Any GP pin on the Builder Base if not already used


This is the initial output mode of the channel

Possible Configurations

  • High: The channel has a logic level of 1 at initialization

  • Low: The channel has a logic level of 0 at initialization



The GP0 pin is connected to the LED directly. The resistor limits the current but it is not really necessary because the Builder Base limits the GP pins current to 20mA.



Used Pins

Used Pins


Used Pins



The ground potential for the assembly

GP0 (can be any GP pin)

The GP output pin

How to write an App

Navigate to the App Builder and create a new application. You can find the “Digital Out” code object under the “Hardware” Tab in the object drop down menu on the left, or you can also use the search bar.




Drag the “Digital Out” Object onto the canvas.






Next, locate the “Button” Object under the Interface tab and drag it onto the canvas.





Finally, connect the “State” port from the Digital Out Object to the “State” port on the Button Object and save your application.


How to create a firmware

Navigate to the Firmware Builder and create a new firmware file.

Click the “+ Add Hardware” button which will open a modal window. Scroll down in the list to find the “Generic” section and select the “Digital Out” hardware option.

Give your device a name, and click “Add Device”




Next, select the “GPIO” driver under the driver dropdown menu, set the out Pin and the mode.

For this example we select:

  • Pin: GP0

  • Mode: Initially low





You may now save your firmware file and upload it to one of your clients.




Supported Hardware

  • LEDs

  • Relays

  • Most anything that can receive a digital signal