Cytron Technical Forum

Hi there. I'm with a project based on an arduino UNO and a G15 Shield (Rev 2.0) with some Cube Servos.

The problem I've had (it's the second shiled that does this) is it stopped comunicating, suddenly with no reason.
I've been using it for some time without any problem and then I tried to load a new program and just didn't work.

For instance I use a S-120-12 power supply (output: 12V DC and 10A).
I'm using the software serial with TX in pin 3, RX in 2 and control in 8. (tried with PINs 11,10,8 and the same ocurred)
Theres nothing burnt or anything (at least that can be seen) nor is it too hot while working with it.

Using default cytron_g15shield library it gets error when trying to communicate:

Ping: overload error

Set wheel mode: overload error

Set torque on: overload error

Exit wheel mode: range error

The error is read by serial port but theres no led blinking in the servo. (tried with PINs rx=10,tx=11,control=8 and other combinatios and the same ocured).
As I connect the servo, if theres no power supply on it makes that sound (tac tac tac) as it's no getting enough fuel, but it stops as soon as the power supply is connected. I assume theres no problem with power.

Any idea of what could be happening? It's the second shiled that goes away with no reason I can guess.

Thanks in advance!

Hi enheragu,

Could you share a few clear photos of your hardware setup?

Is there any possibility that you have accidentally change the G15 ID or baudrate? If so, you can try to load FactoryReset example. It will try to revert back your G15 to original setting.

Ok I solved the problem with one of them (wasn't broke at all, while debugging package send/reception I interrupted conection so it didn't work well).

I discard the ID problem, before the tests I make ping to 0xFE to get servo ID.
The other one is as it was, not working. I tried the factory reset with no success (LED from Arduino UNO blinks, which means fail).



This is the aspect it has (theres nothing broken, brunt or anything...)




In the manual says theres no problem in powering it through arduino Vin pin. ¿Is more advisable to do it through Vmo?

Thank you for your answer

That G15 which you can't factory reset it, did you change its baudrate before?

Yes, it's now at 57600. But thats part of the tests it makes when doing a factory reset. And it's the one I'm using with the other shield.

Can you try to verify that both Arduino and G15 are using the same baudrate? They have to 'speak' at the same speed in order to establish meaningful communication.

It's the same servo and sketch I test with both shields. With the first one it goes well, the second one just does not connect.
I'm not capable of detecting where the problem is or how it was caused.

Let's see if I understand the whole situation correctly. You have several cube servos and two G15 shields (rev2). After troubleshooting, one of the cube servo and one of the G15 shields are still not working properly. Am I right?

Have you tried to control a good cube servo with the G15 shield which is not working, then use a good G15 shield to control the cube servo which is not working? Let me know the result okay? Also share your serial port reading which shows that there are overload error and so on. It might help. Thank you.

Sorry that I'm confused and can't give any other constructive reply at the moment.

Haha sorry for the mess. No, I have several servos but for the tests I'm just using one. I have two shields and one of them is the ona which stopped working.

I've tested the same sketch with the same Arduino and servo. With one shield it goes well, with the other one it can not connect at all.

The thing is I'd like to know what was the reason for the shield to stop working to prevent it from happening to the other one.

Any idea?

Thanks

I see... if that's the case, we'll need your help to send back the shield for further verification. Can you please email support@cytron.com.my to proceed with the warranty process?