I have just reached the stage of zeroing the servos which went smoothly enough. However I noticed a smell emanating from the Hat but discounted the possibility of an issue on the grounds that it was just new components giving off an odour. When I had mounted the servos on the chassis I noticed that the lights on the Hat had gone out and thereafter I was unable to turn the Hat on again. It is dead so far as I can tell and the smell was clearly the symptom of a more serious issue.
How do I apply for a replacement?
Update: for some reason I turned the Pi/Hat on 24 hrs later and the Hat’s green lights came on (no red though) but unfortunately they turned off 5 minutes later. I think I can safely say the Hat is kaput.
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Thanks for the details.
A replacement robot hat will be sent to you.
Once you receive it, please follow these steps to get reinstallation:
i2samp.sh：
cd ~/picar-x
sudo bash i2samp.sh
After the successful installation, please start your Raspberry Pi and proceed to run the examples.
Thank you for the replacement - great service??? However, I have a confession. The new HAT works well but so it would seem does the original!!! I reply so that others do not make the same mistake that I did or if they do they’ll see a “solution”. When assembling the car, I didn’t read the instructions carefully enough and powered up the Pi and not the HAT. The lights lit up and so I thought that everything was fine BUT there was a smell from the HAT. Anyway I zero’d a servo and then the HAT’s lights went out - it now seems that I had been running on the battery but assumed that the smell indicated a PCB failure. I spotted my mistake when installing the new HAT and so I tried the old HAT as well and everything was fine.
My advice - read the instructions carefully.
And thanks once again to Sunfounder and their excellent after sales service.
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I meant to say great service!!!