Motor Controller Not Found

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Did you try the tinycore 13 image:
https://www.popies.net/pypilot/tinypilot...126.img.xz


I am working on software now for new images.  

It may even be that it is just wired backwards (rx and rx).    Do you have 12 volts powering the motor controller?

Hi Sean 

Thanks for the link I previously grabbed the most recent Tinypilot image. 

The one in your link is better, and I can now get access to the Wifi, and view the browser interface.

The web interface still says no motor controller.   But it can see the MPU 9250

I have a 12v Power supply hooked up, and GPIO pins wired.  Previously when trying to make this all work Ive tried swapping the RX/tx pins around, but it reported the same error. 
I've never seen any lights other than the Red LED for pwr light up on the Motor controller.  Should they be lit if the board has pwr/comms. 

My last thought is perhaps for some reason the GPIO pins on my RPI are NBG.  I could load another SD card with just a plain RPI OS on it, and see if there are any basic comms utils I can test it with. 

Any suggestion on what utils I might use to fault find with. 

Have done a fair few projects with Arduino's and not had many issues. But RPI's seem a lot more fiddly to make work.
  
Have just edited this, as I unplugged everything.  
Right  at the start of this blog I mentioned which wires were connected to which pins on the  GPIO.  But got my magnifying glasses out and looked at the pin desingations on the PCB,  then tested what colours those were on the end of the supplied plug .   It turns out when continuity testing that the black wire is Vcc 3.3V, so it was wired completely incorrectly. 

Tracing this thru I re-wired the UART GPIO as follows:    

Most likely the colours have been different on different board versions, and I also had the red core previously connected to VCC 3.3v.  
re-wired the GPIO in accordance with the above.  After looking closely at the priniting on the PCB.   
RX and TX lights have all blinked, and there are no errors listed in Tiny Pilot.  

Woo Hoo!! Awesome. 

Now onto calibration, testing the drive (which worked fine) and figuring out some sort of remote control for the Tiny Pilot, in case the boats Tablet/Web browser runs out of pwr etc. 

wondering about some sort of simple LCD screen for the Tiny Pilot on an RPI 3b+ , and if any is supported.  

Anyhow thanks for being patient Sean, I got there in the end !!