I got the Nano about a week ago. I initially was connected via micro usb for power, and bumped up to this with jumper and DC barrel jack along with jumper cable: https://www.amazon.com/DROK-Regulator-Adjustable-Converter-Transformer/dp/B017SM1O98/ref=sr_1_10?keywords=drok+up+down+converter&qid=1556655967&s=gateway&sr=8-10
After a few days with zero problems on dc barrel jack, I switched from a 12v source connected to the up/down voltage regulator (capable of 5 amps), to a 14v lipo connected to the regulator. regulator is set for 5.2v output (this was last night), and I’m on a robotics team at cal state fullerton, we’ve been using these DROK power supplies on the tx2 for months and months with zero issues with power from lipo → DROK regulator → tx2 (we set the regulator to 19v for the tx2, just to clearify that I’m not pumping 19v into the nano).
The 5.2v up/down voltage regulator (as of this morning) is connected and the nano is giving me ONLY a green led. I powered down, pulled the sd card, and I’m only getting sys logs from yesterday. Basically I seem to have a dead nano, but I’m not sure. I have ordered another power supply (though I’m 90% sure that’s not the issue here). I connected micro usb, and only get green led from that as well.
With the 5v dc barrel jack power, with jumper, and solid green led, and no boot, should I get voltage from the 5v header pins? I’m reading nothing from the header pins.
My case number is: 190430-000474
I should be getting another power supply on the 1st of May, and I’ll report back, but considering I’ve been using this DROK supply for a week with absolutely no issues tells me that something else might going on.
I really hope it’s the nano, and not the power supply, since we need to be able to power this on battery running tensorflow. We can’t tether the nano to a wall socket while connected to a rover, so if it IS the power supply, are there any suggestions for off the shelf dc to dc voltage regulators that anyone can suggest in the meantime?