Industrial Digital Out 4 Bricklet


  • 4 channel digital output
  • Output voltages up to 36V
  • Galvanically isolated
  • Groupable


The Industrial Digital Out 4 Bricklet can be used to extend Bricks by four galvanically isolated digital outputs. The outputs have to be supplied externally with a voltage of up to 36 Volt. Output isolation permits the usage without a direct electric connection, such that ground loops can be prevented and an additional degree of safety is added.

Typical applications are the interfacing of industrial controllers, such as PLC's or frequency converters, or the usage in environments were electrical ground levels can not be connected.

If you need more then four outputs, you can add another Industrial Digital Out 4 Bricklet and group these together. If you do this, you have eight outputs which can set simultaneously in contrast to set both Bricklets successively. Grouping is only possible for Bricklets connected to one Brick. Thus you can group up to four Industrial Bricklets on a Master Brick or two on other Bricks.

Technical Specifications

Property Value
Current Consumption 2mA (per active output pin)
External Voltage Supply Up to 36V
Output Type Four operational amplifier outputs
Maximum Output Current 25mA (per output pin)
Isolation 5000Vrms (optocoupler value)
Dimensions (W x D x H) 40 x 40 x 14mm (1.57 x 1.57 x 0.55")
Weight 10g



The Industrial Digital Out 4 Bricklet has an 8 pole terminal. Please see the picture below for the pinout.

Industrial Digital Out 4 Bricklet pinout

Test your Industrial Digital Out 4 Bricklet

To test a Industrial Digital Out 4 Bricklet you need to have Brick Daemon and Brick Viewer installed. Brick Daemon acts as a proxy between the USB interface of the Bricks and the API bindings. Brick Viewer connects to Brick Daemon. It helps to figure out basic information about the connected Bricks and Bricklets and allows to test them.

Connect the Industrial Digital Out 4 Bricklet to a Brick with a Bricklet Cable. Additionally connect a voltage source to power the Bricklet and a load you want to switch. For testing purposes we have connected a battery and a LED (see picture below).

Industrial Digital Out 4 Bricklet setup

If you connect the Brick to the PC over USB, you should see a new tab named "Industrial Digital Out 4 Bricklet" in the Brick Viewer after a moment. Select this tab.

If everything went as expected you can switch the LED by changing the output state with the Brick Viewer.

Industrial Digital Out 4 Bricklet in Brick Viewer

After this test you can go on with writing your own application. See the Programming Interface section for the API of the Industrial Digital Out 4 Bricklet and examples in different programming languages.


A laser-cut case for the Industrial Digital Out 4 Bricklet is available.

Case for Industrial Digital Out 4 Bricklet

The assembly is easiest if you follow the following steps:

  • Screw spacers to the Bricklet,
  • screw bottom plate to bottom spacers,
  • build up side plates,
  • plug side plates into bottom plate and
  • screw top plate to top spacers.

Below you can see an exploded assembly drawing of the Industrial Digital Out 4 Bricklet case:

Exploded assembly drawing for Industrial Digital Out 4 Bricklet

Hint: There is a protective film on both sides of the plates, you have to remove it before assembly.

Programming Interface

See Programming Interface for a detailed description.

Language API Examples Installation
C/C++ API Examples Installation
C# API Examples Installation
Delphi/Lazarus API Examples Installation
Java API Examples Installation
JavaScript API Examples Installation
LabVIEW API Examples Installation
Mathematica API Examples Installation
MATLAB/Octave API Examples Installation
Perl API Examples Installation
PHP API Examples Installation
Python API Examples Installation
Ruby API Examples Installation
Shell API Examples Installation
Visual Basic .NET API Examples Installation
Modbus API