Thanks buddy. I have it wired up the way I surmised and will download the Arduino today and see what happens. I haven't checked out the software to ...

Yeah I was going to that. I made a "stepper motor" tester two years ago for doing things like this. The code is already written and downloaded to a ...

OKay thanks. I took a stab at it, will try with software.

@bldrgy I built this arm as well and I'm into the wiring phase. I'm not sure where the wires go because the "schematic" provided by Mechatronics only...

Eliza did all the things I did but thanks for the link because it let me know I didn't miss anything. I have two computers, 6 nrf24L01+ battery power...

Search for what? What is IIRC?

@mday Mark, your code works. At first my last entry (volts) ended with a bunch(5 or 6) of odd characters, so I changed this line: uint8_t buf[RH_ASK...

@mday Thanks Mark. That's what I wanted. I was close. Your code looks simpler than original offering. Haven't tried it yet, but it gives me idea...

@robo-pi Thanks robo, good ideas. Yes I want simple. I like your idea of focused light (ie down a tube) to shelter it from sunlight. I'll have to...

I do have a RPI3 with cameras and have seen an app that detects and tracks vehicles. REally cool but I dislike RPI3 O/S: too hard to use, too many u...