Hi @galvenite, 

Posted by: @galvenite

When I power on SOLO, I find that the E2 light isn't blinking. I guess this is an error condition. Is there anyway to reset the device?

two questions:

1- What about E1 LED? is it blinking or staying ON?

2- Can you get connected to the board using the USB cable?

You can always read/reset the Errors in Motion Terminal ( or using the command code for overwriting the errors), so you can connect SOLO to Motion Terminal and see if it detects any Error shown in the "Error Register" part or Not?

You can also try to Reset factory the board.

- one side thing, there is also a chance that the device is damaged, in that case, E2 might not blink, you can try to reset the power of SOLO and see if it goes back to normal or not.

I'll remain available.

Regards

Milad

@milad 

E1 light is off as well and it doesn't respond when attached via usb cable. Power cycling hasn't fixed the issue. Next step will be to unplug everything and try power cycling. 

@galvenite ok, so unfortunately if after recycling the whole power the LEDs are again inactive and no response to the USB connection, it means the board is dead, it can be due to connection of the signals to high voltages or some other issues like falling an object on the board and shorting some line etc.

I recommend you to have some SOLO UNO units, as they are available now in our shop, and they have full compatibility with BETA models with some extra features.

I'll remain available.

Milad

@milad,

So I did get two new solo uno units.

I was troubleshooting the beta version this morning and noticed that the E2 light will blink only when the UART connector is disconnected. I found this odd as nothing with the UART had changed since the last time I was able to successfully communicate to both SOLO devices using the Pi. On the UART connector only the TX and RX pins are connected to a multiplexer. Any final thoughts before I change to the new setup?

Thanks,

Greeting @galvenite,

Ok, yeah, the only reason can be the fact that in the Communication port there are some pins that are directly connected to the central DSP on SOLO and they are not having any usage for the user ( used only for production) , so there is a chance that you are pulling them high or low ( connecting them unwantedly to the ground or higher voltages ) and they can cause an issue for the DSP in boot-up stage, so the best way is to make sure you only use the Ground, UART TX and UART RX of that part without touching other pins. ( be also aware of short-circuits in your wirings as they can also cause issues)

You can use in SOLO UNOs the CAN Bus/ UART Pinout which will give a little bit easier access to UART TX and UART RX compared to SOLO BETA versions, the Pin Numbers and their functionality is written below ( the Pin Numbers are printed on SOLO UNO's PCB near each PIN on the header pin)

BTW, We are releasing CAN Open enabled firmware in a couple of weeks, and on SOLO UNO devices you can utilize it as they have fully ready CAN-BUS, this will give you a huge advantage in Networking SOLO's without the need to have any external hardware like multiplexers and so on, however, CANOpen can be a little bit challenging for unexperienced users, and we are working on it to make it easy to use.

For the time being you need to continue with UART or USB and later you can switch to CANOpen for a more robust system.

Let me know if you have any other thoughts to share.

Regards

Milad