Feetech RS485 Servo icon Feetech RS485 Servo Control Feetech serial bus smart servos via EZB UART or PC COM port in ARC using virtual ports mapped to servo IDs. Try it →
Asked — Edited
Resolved Resolved by Dave Schulpius!
H_bridge Wiring Question

H_Bridge Wiring Question

Hello,

I found an issue with the factory wiring with my Roli's H-Bridge wiring. When I was doing the h-bridge test I noticed that the unit wouldn't move. Upon inspecting the h- bridge wiring I noticed that the red and black wires coming from the on/off switch were wired wrong on the h- bridge. The red and black wires were off by one screw slot. I also noticed a burning smell, but couldn't see anything that was burnt. After correcting the wiring error,I still can't get the unit to move. I'm wondering if the wiring error blow out the h- bridge.

Is there any diagnostic that I can do to confirm this, and if the h- bridge is bad how do I go about getting it replaced under warranty?

Thanks in advance for your help

Calvin

User-inserted image


ARC Pro

Upgrade to ARC Pro

ARC Pro is your gateway to a community of like-minded robot enthusiasts and professionals, all united by a passion for advanced robot programming.

#2  

Yes, sadly the h-bridge is most likely bad now. The hot wire is going straight into the ground port of the h-bridge. Epic fail! eek

Your going to have to get a now one. It's an issue that has been talked about before. The people who assembled your unit screwed up. As bborastero pointed out; you need to use the Product Warranty section on the Contact Us page and EZ Robot will make it right.

It sucks that you have to now wait a week or more till the now H-Bridge arrives to use your robot. tired

#3  

They seem to be stocking some replacement parts in Canada now. I got the missing roation servos from my Scorpion kit overnight delivery from EZ-Robot headquarters, so it might not take too long.

It they tell you it will be more than a few days email me (address in my profile). I have a spare H-bridge I could express mail you and you can have EZ-Robot send the replacement to me.

Alan

#4  

Hello, Thanks for all the replies to my problem. I believe that as Dave says my h- bridge is fried from the wiring error made by the factory. I'm going to request a replacement from ez-robot. Will update this post if this resolves the issue.

Thanks, Calvin

#6  

Hello,

I sent in a warranty request on 12/28/2014 and I haven't heard back from ez-robot yet. Can someone from ez-robot tell when my warranty request will be processed?

Thanks, Calvin

#7  

Ez Robot have been closed since Dec 24th.... They just re-opened today... They should respond soon....

Author Avatar
United Kingdom
LinkedIn Twitter Google+ YouTube
#8  

@Alan, if you hadn't said anything I would have missed the fact my scorpion kit was missing the 2 rotation servos too. Thanks for the reminder.

@clovejr, they will respond, as Richard said, they have only just started back again after the holidays. Give it a few days/a week and if you still haven't heard chase it up. They are usually very good though so you shouldn't worry too much about it.