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Remote Robot Trigger

Remote start module for competition robots.

Main features:

Consumption of 3mA in stand by and 15mA active @ 5V

Supply voltage: 3.3V to 5.5V

Improved immunity to ambient light

Small size (10.541mm x 12.51mm x ~ 1mm)

Weight less than 1gr.

Male header connector with standard 2.54mm spacing

Parts of the Remote Robot Trigger


1.- Optical sensor

It must be ensured that this sensor has a line of sight so that the infrared signal from the Judge's control can reach it without problems.

These LEDs allow us to see the function that is activated in the module at that moment.

2.- Red LED, turns on when the RDY function is activated

3.- Green LED, turns on when the GO function is activated
4.- Digital output pin that turns on when the RDY function is activated.

5.- Digital output pin that turns on when the GO function is activated.

6.-Power supply voltage ground connection pin.

7.- Connection pin to positive voltage of the supply 3.3 to 5.5V.



The Judge Control is capable of activating up to 3 functions of the module:

1.- General reset:

This function sends the signal to the module to exit whatever function it is currently in, that is, it turns off its pins leaving them in a low logic state (0V), the LEDs will also turn off completely.

2.- “RDY” function:

When the Judge presses the RDY button on his control, the module will turn on the red LED and turn on the corresponding pin, in this way, both the judge and the competitor will be able to verify that the module is connected correctly and also that it is ready to enter the following way.

Technically it is not necessary for the robot to detect or read this pin, however the connection pin with digital output is provided, in case the team considers it convenient to use it.

3.- “GO” function:

The "GO" or start function is the one that tells the robot to start its operation in combat mode.

The pin corresponding to this function will be in a low logic state (0V) when the module is in any other operating mode.

The robot must be inactive when the pin is at 0V and must wait until it changes state to start working, when the pin changes state, it will also turn on the green LED to visually corroborate the correct operation of the module.


The robot's programming should only wait for the positive positive state change in the “GO” pin of the module to be able to start in combat mode.

It is mandatory to keep any optoreflective sensor operating at 38khz off to avoid any malfunction of the module.


In case you do not have an additional pin on the current design of the robot, you can connect the pin "GO" from the module to the reset pin of the microcontroller or Arduino.

* The module contains electronic components, so it must be handled with due precautions to avoid damage from short circuits, electrostatic discharge and / or bad connections.

If you have any questions or comments please send it to the email

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