KoachOr was created by the KoachOr team to make electronics and robotics prototyping accessible to everyone.

KoachOr is a free web app for designing, wiring, coding and simulating electronics and robots on a 3D bench, right in your browser. You can build with real parts like Arduino, ESP32, sensors, motors and robot kits, write the code, and watch it run before you buy anything.

Yes. KoachOr is free to use. You can use it without an account, or save projects locally or to the cloud.

KoachOr: build it before you buy it

KoachOr is a free web app for designing, wiring, coding and simulating electronics and robots on a 3D bench, right in your browser. Prototype without parts: try a circuit or a robot before you buy anything, and see what goes wrong without breaking a thing.

KoachOr is free to use with full features, real parts, real physics, and instant in-browser simulation.

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Who made KoachOr

KoachOr was created by the KoachOr Team. We built it so anyone can try a circuit or a robot before they have the parts, without the risk of burning out a board.

KoachOr is made for students, makers and robotics teams: people learning electronics for the first time, classes without a full lab, and teams who want to test a robot before they build it.

What KoachOr is

KoachOr is a microcontroller and robotics simulator that runs in your web browser, with nothing to install. You put real parts on a 3D bench, wire them pin to pin, write the code, and press Simulate to watch it work, the way it would on your desk. The parts behave like the real ones: if something wouldn’t work in real life, it doesn’t work in KoachOr either, and it tells you why in plain words.

What you can do

Build: put real parts (Arduino, ESP32, sensors, motors, screens and LEGO SPIKE, VEX, FTC and FRC robot kits) on a 3D bench, each the size of the real thing.
Wire: connect them pin to pin. Circuit checks explain mistakes in plain words, before anything burns.
Code: write Arduino and ESP32 sketches, SPIKE and VEXcode Python, or FTC and FRC Java.
Simulate: LEDs light, motors turn, screens draw and the serial monitor talks back.
Design: sketch your own parts in 3D and export them for 3D printing.
Test Bench: drive your robot on a competition field with real physics.

Accounts and signing in

You can use KoachOr without an account. With a free account you can save projects to the cloud and open them on any device. You can sign up with your email address, or log in with Google, GitHub or Microsoft. When you log in with Google, KoachOr receives only your name, email address and profile picture, and uses them only to create your account, log you in and greet you by name. It doesn’t access anything else in your Google account.

Read how KoachOr handles your information in the Privacy policy, and the rules for using KoachOr in the Terms of Service.

Contact

Questions or feedback: support@koachor.com.