The spec sheet for the MCP73831 charge controller shown in the NanoVNA hardware diagrams that I find () only shows on and off states - no flashing, so all I can speculate is that your unit was built with a different component, or some additional circuitry. I have seen this device in other devices (smalL LCD scopes . . . ) and the "on for charge/off when complete" is also consistent there.
Other than that speculation, I've got nothing . . .
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On March 9, 2022 9:30:42 AM CST, Joe WB9SBD <nss@...> wrote:
OK we need absolute clarification from like the manufacturer or something here.
Mine NanoVNA-H4
First time I used it i did the charge before use. I was "Told" that when charging the red led will flash, and when fully charged, it will be a constant light. At least that is what I was "Told"
And that's how I have been using it from the first day. If I know I will need it, I will charge it first.
Connect to charge,,,
Light flashing,,,,,,,,,
ok steady light go and use it.
NOW,,? the thought of the light going out,? first question I have is OK what does flashing mean?
and two,, By accident, I connected it to get charged, and something came up and I was not able to do the test, and I forgot all about it being on the charger. Only to discover it like 4 days later with a solid red light on still.
I would think after 4 days of charging it would be done wouldn't you?
Joe
On 3/4/2022 4:23 PM, Tim Dawson wrote:
On mine, the red LED indicates charging, and it goes out when full.
- Tim
On March 4, 2022 4:00:30 PM CST, "Tom C. via groups.io"<uuhamfl@...> wrote:
I am a new owner of an Aursinc NanoVNA-H, HW Version 3.6
Charged it for 4 hours out of the box, but only RED LED solid.
Used it for 90 minutes matching mobile HF antenna; seems to work fine.
Now to charge it after use. Still getting only RED LED solid. (?)
Not sure about this indication or if it is charging.
Any ideas?
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
