Dual-Axis Compass icon Dual-Axis Compass — Dual-axis I2C magnetic sensor for EZ-B robots enabling magnetic direction sensing; requires short 2-3 in wiring. Third-party hardware. Try it →
Ask a Question
Ask a Question
Start a Conversation
Start a Conversation
Share a robot project
Share a Robot Project
View All Your Content
All Your Content
Website Help
Website Help

Robot Building Questions

ARC Pro
Learn More
Upgrade to ARC Pro
Take control of your robot's destiny by subscribing to Synthiam ARC Pro, and watch it evolve into a versatile and responsive machine.
Compare Features View Plans
Power Up Your Scripts with AI
Describe what you want — get working robot code. The project-aware AI Script Assistant built into ARC.
100 credits
$20
250 credits
$45
500 credits BEST VALUE
$80
Learn More
Synthiam Credit
Log In
Earn synthiam credit to lower synthiam product costs
Earn Free Credit
Share your robots, answer questions, and help others — earn credit toward ARC Pro, AI credits, and robot swag.
See How to Earn
Exosphere
What is Exosphere?
Remote control robots or add telepresence capabilities with Exosphere

Drive Real Robots, Anywhere

Remotely operate robots around the world or add live telepresence to your own build — straight from your browser.

Discover Exosphere
Synthiam Swag
See All Swag
"I build robots" Hoodie

"I build robots" Hoodie

This heavy hooded sweatshirt is perfect for robot builders. The material mix of cotton and polyester...
Recent Robot Skills
View All
Audio File Out EZB

Audio File Out EZB

Stream MP3 or WAV files from your PC to the primary EZ-B speaker for robot audio playback, alerts,...

PCA9685 Servo Driver

PCA9685 Servo Driver

Drive 16 servos over EZB I2C with a PCA9685 PWM controller, using ARC servo commands and...

OpenAI Dall-e Image

Openai Dall-E Image

Generate or edit images with OpenAI GPT Image from text or camera frames, with save and programmatic...

Ohmnilabs Standalone by OhmniLabs
Featured
Ohmnilabs Standalone

Connects Ohmnilabs Telepresence robot's UP Board COM to ARC, enabling drive and servo control (neck V0) and integration with ARC cameras.
Project Multi-omnibots 2000 by charleybot
Featured
Robot By Charleybot

Upgrade Omnibot 2000s with Mini-ITX PCs, 12V battery power, servo-replaced arms, L298 motor controllers, USB Lifecam vision and servo pan/tilt
Community

Join the Synthiam Robotics Community

Connect with thousands of robot builders, educators, and engineers. Share projects, get answers, and learn to build smarter robots with ARC.

  • ✓ Showcase your robots & projects
  • ✓ Get help from experienced builders
  • ✓ Earn credit toward Synthiam products
Create Your Free Account Log In
question
Picture In Picture Lag With Tracking

Picture In Picture Lag With Tracking

Running ARC on a Windows mini PC mounted on a Roomba (connected via the Roomba OI serial to USB). I’m driving with the Roomba Movement Panel and...
Comments 1
Views 93
Athena |
question
Arduino Motor Speed Fix Rewrite

Arduino Motor Speed Fix Rewrite

Thank you @Athena for your help. The following Arduino_v11c sketch appears to have a problem: normalSpeed (600) is never reached and the motors are stuck at...
Comments 4
Views 128
Robojack |
question
EZ-B V3 Serial Connection Issue

EZ-B V3 Serial Connection Issue

I'm trying to connect an EZ-B V3+ to ARC using a USB-to-TTL serial adapter. Details: - Hardware: EZ-B V3+ - Connection method: USB-to-TTL (direct to PC) on...
Comments 1
Views 121
Athena |
question
Separate Gripper Control Scripts

Separate Gripper Control Scripts

New gripper control - help needed I still need help controlling each gripper using both its IR sensor and a lever switch to detect when the gripper has...
Comments 11
Views 202
Athena |
question
PCA9685 I2C Port Selection

PCA9685 I2C Port Selection

Hi Athena, I'm using the PCA9685 Robot Skill in ARC with an EZB v4 controller, and the PCA9685 is connected to the EZB v4 via the I2C port. I'm not getting any response...
Comments 5
Views 197
Athena |
question
EZ-B V3 Set Digital Triggers Low-Level Relay On Co

EZ-B V3 Set Digital Triggers Low-Level Relay On Co

I’m using an EZ-B v3 over Bluetooth with ARC on Windows to switch two LED strips via a common 2channel 5V optoisolated...
Comments 1
Views 105
Athena |
question
Inmoov Head Movements

Inmoov Head Movements

I built a new InMoov head and I’m trying to figure out how to move it. I assembled the head the same way as the original and I’m using Synthiam ARC to handle speech, vision, and...
Comments 1
Views 97
Athena |
question
Arduino_V11 Symmetric PWM Steering

Arduino_V11 Symmetric PWM Steering

Thank you for the Arduino sketch and the ARC scripts. I'm using the Arduino sketch (Arduino_v10) as the robot controller (acting as the EZB) connected...
Comments 14
Views 178
Robojack |
question
ESP32-CAM NMS Pose Yaw Flips

ESP32-CAM NMS Pose Yaw Flips

I’ve got an ESP32-CAM (AI Thinker) flashed with the Synthiam ESP32-CAM firmware (set to Client Wi-Fi) mounted overhead and feeding ARC through the Camera Device...
Comments 1
Views 133
Athena |
question
ARC Skills Needed For Inmoov

ARC Skills Needed For Inmoov

Servo Mapping EZ-B v4.pdf Hello Athena, I have built an EZ-Robot InMoov robot head and customized it. I have implemented a camera in each eye, with the right eye...
Comments 8
Views 783
f823320 |
question
Openai Dall-E Skill Deprecated

Openai Dall-E Skill Deprecated

The "OpenAI Dall-E Image" Robot Skill returns the following error message in ARC. I assume this is because the skill has been discontinued. Is there a...
Comments 3
Views 136
afcorson |
question
Stabilizing Frequency Detector On Rock Pi X

Stabilizing Frequency Detector On Rock Pi X

Running ARC directly on a Radxa Rock Pi X (Windows, WiFi) mounted in a small rover. I’m using the Frequency Detector skill to move a...
Comments 1
Views 97
Athena |