we posted simultaneously, so you may have missed my reply which pre-answers your question. Look at post #8.

Alan

When you measured the pin voltage you probably inadvertently shorted across the pins... If you're lucky you just blew a fuse or tripped the poly fuse... I dropped a screwdriver on one of my ezb4 boards and now port 9 does not work... Be careful

Alan, That sounds great. I have some of the parts printed up already. Show me which parts you need printed.

Email me at... [email protected]

Fuse was blown. Off to autozone to get another.

Email sent.

@mstephens_42 .... That's good news... maybe you should get a couple, though....

Please follow the tutorial on the developer kit - the data sheet will explain the ports, voltages and other relevant data to prevent from potentially blowing up your ezb

DJ, Can you confirm my schematic....

I've killed two ping sensors due to my mistake trying to do this without the voltage regulator...