Visual, real-time, agent based programming for Arduino. Now available for Windows, Mac, and Linux.

Embrio is a different kind of visual programming environment which doesn’t try to mimic traditional programming, instead you create your program out of multiple “agents” which each have one job and all run at the same time in parallel. Agents attach to each other, activating and suppressing other agents similar to neurons in a brain. Agents are implemented by adding and connecting visual nodes, and you can write your own custom nodes giving you the full power of traditional coding wrapped in an easy to use graphical interface. Work with a live connection to your Arduino to get real time feedback and interaction, avoiding the cumbersome compile, upload, and test loop of traditional programming.

Agent Based Programming

An agent is a little piece of a program that has one job. Agents connect to and turn on and off other agents. An Embrio program is made up of multiple agents running in parallel.

Real Time Connection

Work with a live connection to your Arduino, see how your program works as you build it!

See the list of compatible boards.

Compiles To Arduino

When your program is done it can be compiled to run entirely on your Arduino! The profiler tool gives you accurate resource usage information while you work.

Learn more by going through the growing library of video tutorials, for example:


Fade LED - This tutorial shows you how to use an Output node and a repeating Timer node to make an LED fade on and off.


Print to LCD - This project uses a custom Arduino node and some Text Activator nodes to print text to an LCD. It cycles through 3 messages with the push of a button.


Autonomous Car - In this 3 part project we’ll see how to program an autonomous robot car using Embrio. The car has 3 behaviors. It wanders around, avoiding obstacles by turning away from near by walls and stopping before hitting a wall. Every so often it stops and...

Recent Activity

8/7/2018 - New Forum Post

Speedcontrol Node ULN2003 - Stepper

Harrie: The compilation is going well now. The speed of the stepper motor seems to be fast enough, I have not measured any speed yet, but this is acceptable. I want to thank you for your gigantic effort t

7/5/2018 - New Library Item

EasyDriver Stepper

This node lets you control a stepper motor, like the Nema 17 Bipolar Stepper Motor, with the EasyDriver - Stepper Motor Driver.

7/5/2018 - New Forum Post

PC Controller/Form errors - Hobby Servo example

EmbrioAdmin: I was finally able to get to this, the form editor is fixed in version You can open Embrio and an upgrade button should show up on the top. Thanks again for letting me know this was broke

7/5/2018 - Embrio Software Update


Bugs Fixed
Fixed form editor on Windows.

6/22/2018 - New Forum Post

"+" sign disappears in program code

EmbrioAdmin: Sorry I didn't get an alert that you responded. I'll investigate on Linux, probably a difference in the way the two systems deal with escaping weird characters.

6/21/2018 - Embrio Software Update


New Features
Connections highlight when hovered, can delete connections with key commands

Bugs Fixed
Node name change text boxes can select text
White space in code wasn’t deleted when saved
Sometimes when adding a node the nodes on the screen couldn’t be dragged until the agent is reopened.

6/10/2018 - Embrio Software Update


Bugs Fixed
Node outputs in nested reusable node groups would cause a compile error in the compiled program.

3/16/2018 - New Tutorial

Bezier Curve Node

The bezier curve node lets you convert a linear input to a curved output. It is especially useful for working with physical devices that have a non linear response, or adding ease in and out throughout a project for a more natural look.

3/5/2018 - New Library Item

I2C 20x4 LCD

This node works with any standard I2C 20x4 LCD module.

2/24/2018 - New Library Item

Pololu Maestro Servo Controllers

This node lets you control a bunch of servos with the Pololu Maestro family of servo control boards using the maestro-arduino library. A servo control board is great because it moves all of the hardware and software resources needed to control servo motors off of the Arduino and only takes up 2 pins to control a large number of servos. The board creates the smooth PWM signals needed to run the servos. You can also use these boards to control anything that's controlled by a PWM signal like LEDs.

1/2/2018 - New Tutorial

Servo Control with UI

This tutorial shows how to control a Servo with an Arduino via a user interface running on a PC, connected by a serial cable. The project contains two controllers, one to run on the Arduino, and one to run on the PC with a UI made with HTML, CSS, and jQuery. The two controllers communicate with built in serial communication nodes.

1/2/2018 - New Tutorial

Form Editing Basics

Embro lets you create programs with a user interface to run on a computer. Pages are creating using HTML, CSS, and jQuery. This video tutorial gives an overview of the Embrio form editor.