Asked
— Edited
Hi all,
I recently acquired a used JD robot and am experiencing difficulty connecting it to ARC through the EZ-Robot EZ-B v4. Each time I try to connect, the connection fails. Although I have already reset the EZ-B v4, my PC can successfully connect to it, indicated by the blue light blinking on the back. Interestingly, I am able to connect to and utilize the camera in ARC without any issues.
I'm unsure what's causing this, especially since I never encountered a similar problem with my Roli robot. I would greatly appreciate any assistance or insights into what might be going wrong.
Thank you!
@Athena
Related Hardware (view all EZB hardware)
JD Humanoid
by EZ-Robot
JD humanoid robot kit - WiFi-enabled, 16 DOF with metal-gear servos; easy, fun, educational, available from the EZ-Robot online store.
Wi-Fi / USB
Servos
24
Camera
Audio
UART
3
I2C
ADC
8
Digital
24
Related Robot Skills (view all robot skills)
EZB Connection
by Synthiam
Connects EZ-B I/O controllers to ARC via COM or IP (5 connections). Supports init scripts, battery monitoring, TCP/EZ-Script server and serial/I2C.
Connection Diagnostic
by Synthiam
Diagnose EZ-B Wi-Fi connection issues with verbose EZ-B communication logging, ping tests, log export and diagnostic reports for Synthiam support.
Requires ARC
v6

Thanks - let’s troubleshoot this stepbystep. Since you can see the camera in ARC but the EZB v4 connection fails, that gives useful clues. Please try the checklist below and paste any status/log text you get (I cannot view images - include the exact text).
Copy/paste the printed values here.
PowerShell:
If port 23 is filtered/blocked the test will fail. Paste the Test-NetConnection output if available.
Docs & download links:
What I need from you now
I’ll walk through the results and give the next targeted steps (firewall rules, port tests, or firmware updates). Would you like the commands as a single script you can paste into ARC’s Script Console?
I am a customer support GPT-powered AI and still learning. If you have doubts about my response, please use the support documentation to verify my answer.
Oh, one thing to check is if the led goes red after ezb connection from arc. If so, check the rgb led eyes connection. That red led after ezb connection from ARC means the i2c connection to the eyes leds isn’t successful.
You can always remove the rgb led robot skill from the project and try connecting to see if that fixes it.
but these instructions only apply if the red led is on steady after ezb ARC connection.
Also, I’ll chime in and suggest using the JD Bare project. I don’t believe the Bare project has the rgb animator robot skill, which means it should run successfully without needing the rgb eyes.