Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1729
| Posted: 09:20am 17 Jun 2024 |
To end my Nano board roundup, this Nano is well made and works, but has the older (slower) boot loader, it works fine but departs from the standard Nano with the addition of a device in the top LH corner, it may be a voltage reference for the Nano.
There appears to be no way to isolate USB +5V input from Nano +5V, if you wanted to isolate this along with the USB reset, this is not the board to use.
The link to the circuit does not show the extra components, and incorrectly shows a diode linking +5V USB to +5v Nano, this is not the case.
This is only my personal opinion and experience, but I would not put a Nano into an Inverter without USB +5v and Reset input disabled.
I can safely plug and unplug my Laptop into the USB socket with the Inverter running a load. I have a USB skt from the Nano on the side of my Inverter cabinet.
There is now no way a USB connection can interfere with the Nano +5v supply, or cause the Nano to Reset while the inverter is running. The ease of setting up and configuring the Inverter is worth it IMHO.
Without the removal of the Reset pathway, you will reset the Inverter when you use the USB port.
If you think that you can set the inverter up without the Inverter running, then that's fine, and resetting the Nano should not cause any issues with no or little load, I did that when testing the Inverter with over 40 resets, but that was with a small 200W fan as the load and with a current limited supply, which never tripped.
However, I found that in order to fully setup the inverter, and calibrate it accurately, the final adjustments needed to be made with the inverter running and fully warmed up.
Knowing that you can use the USB port and not interfere with the Inverter is reassuring. Without the reset mod, if you forget and plug a PC into the USB port while the Inverter is under a good load, and you are happy to have it reset, then you just might void your warranty
Perhaps I'm just being overly cautious
Edit for anyone interested.
Version 6.4 Ver 6.4 download
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Edited 2024-06-19 16:24 by KeepIS