Programming TeleOp

Getting Started!

This year's Starter Bot program aims to offer flexibility to teams in terms of complexity. This walkthrough will begin with the basic version for Blocks. A version with autonomous built in is also available!

If your team is new to FTC, or in need of a review, we strongly recommend checking out our updated Hello Robot Programming Guide before diving in!

To begin, let's take a look at the configuration and actuators used in this year's design.

Configuration

Before getting started with programming we needed to create a configuration file. Below is an overview of how the robot is configured for the TeleOp code to function as expected:

Port Type	Port Number	Device Type	Name
Motor	0	REV Robotics Ultraplanetary HD Hex Motor	rightDrive
Motor	1	REV Robotics Ultraplanetary HD Hex Motor	leftDrive
Motor	2	REV Robotics Core Hex Motorr	coreHex
Motor	3	REV Robotics Ultraplanetary HD Hex Motor	flywheel
Servo	0	Continuous Servo	servo

Configuration File Download

Right click the file below and select "save link as". To put this configuration file on your robot, drag this file into the "FIRST" folder of your Control Hub's file system.

651B

REV Starterbot.xml

Open

You will need to activate the configuration using the Driver Hub before proceeding. Click here to learn more about the configuration process.

Wiring Diagram

Device Name	Device Type	Port
rightDrive	UltraPlanetary Gearbox Kit and HD Hex Motor	Motor/Encoder Port 0
leftDrive	UltraPlanetary Gearbox Kit and HD Hex Motor	Motor/Encoder Port 1
coreHex	Core Hex Motor	Motor/Encoder Port 2
flywheel	UltraPlanetary Gearbox Kit and HD Hex Motor	Motor/Encoder Port 3
servo	Smart Robot Servo - set to CR mode	Servo Port 0

The Smart Robot Servo can be changed to continuous mode using the SRS Programmer!

Gamepad Setup

The 2025-26 REV DUO FTC Starter Bot is designed to use a split arcade drive for the default. Check out our Upgrades page for the arcade drive version of the program.

In split arcade drive, the left joystick will control forward and reverse motion of the robot, and the right joystick will control turning. This is similar to how some RC cars are driven and video games are played.

Not all gamepads have buttons labeled the same way. Check the manufacturer's documentation for accurate button mapping.

2025-26 REV DUO FTC Starter Bot Gamepad Layout:

Gamepad Input	Function
Right Joystick	Turn left and right
Left Joystick	Drive forward and reverse
Home/PS Button	Cycle OpModes during Initialization (Auto code only)
Right Bumper	Activates flywheel, feeder Core Hex, and agitator servo to automatically fire at "bank shot" (near) range
Left Bumper	Activates flywheel, feeder Core Hex, and agitator servo to automatically fire at "far shot" range
Left Dpad/Right Dpad	Manually rotate agitator servo
Y/Triangle	Manually spins the Core Hex at half speed
A/Cross	Manually spins the Core Hex at half speed
B/Circle	Manually spins flywheel to "bank shot" (near) velocity
X/Square	Manually spins flywheel to "max" velocity
M1 (back button)	Manually spins flywheel to "bank shot" (near) velocity
M2 (back button)	Manually spins flywheel to "max" velocity
Options	Runs the flywheel motor in reverse

More information on programming gamepads for use with your robot can be found at Hello Robot - Using Gamepads.

The REV USB PS4 Compatible Gamepad (REV-31-2983) has two remappable M-buttons on the back side of the controller. For this program, we advise reprogramming them to be the Circle and Square buttons!

Please see the guide here for how to remap.

Basic TeleOp Program Downloads

Blocks:

Check out FIRST's guide on uploading a Blocks program!

22KB

REVStarterBotTeleOp2025.blk

Open

OnBot Java:

5KB

REVStarterBotTeleOpJava.java

Open

TeleOp with Autonomous Program Downloads

Blocks Auto:

Please see the Autonomous Program section of this guide to learn how to switch between the program that will run!

Check out FIRST's guide on uploading a Blocks program!

55KB

REVStarterBotTeleOpAuto.blk

Open

OnBot Java Auto:

10KB

REVStarterBotTeleOpAutoJava.java

Open

Any updates to our example programs are documented in our changelog.

The following pages will dig deeper into unraveling the secrets behind this code. Grab your pickaxe and let's get started!

Quick Links
Initialization and Variables
Main Loop
Flywheel Control
Manual Control and Drive
Autonomous Initialization
Autonomous Code
OnBot Java Overview

Programming Walkthrough Video

Programming Autonomous Video Walkthrough