i bought this nano from an online shopping site. ive used it for many projects. the chip on top isnt heating up its the rectangular ic on the bottom and the IDE port is gray and i cant upload code. the previous code works but now I can't upload new code. just about 5 minutes before, i attatched a 3.7v tp4056 charger module where output is connected to a Mini B cable. what can i do?
Hi @joaquinlovesarduino. Please try this:
- Disconnect the USB cable of the Arduino board from your computer.
- Disconnect the TP4056 as well as any shields, modules, external circuitry, etc. from your board.
- Connect the Arduino board to your computer with a USB cable.
After you do that, do you now see a port for the board under Arduino IDE's Tools > Port menu?
Is there a chance that when you connected the charger you did so with the polarity reversed ?
I already disconnected everything, though the port is still gray.
I double checked it and it seems correct.
The TP4056 does not have an output, It has a USB input for charging and a connection for the battery to be charged.
The Nano does not have a type B connector.
Exactly what did you do?
I apologize my mistake, I meant to say a Mini B connector, and for the TP4056, from what I know, there are a lot of versions of the TP4056, Mine has OUT+ and OUT-.
here is the picture of the project
and this is a picture of the TP4056 which i have.
If it's the IC with 3 legs and a little tab, it's the voltage regulator. If it's the IC with plenty legs, it's the serial-to-usb converter (FT232xx on originals and truthful clones, usually CH340 on other clones). I suspect the latter as the board is no longer recognised. The IDE only sees what the operating system tells it; so what does your operating system think of the board?
Consider it a write-off. Heating up is nearly always a sign of death. You can buy a serial-to-usb adapter (which has DTR broken out as well) and see if you can program the board using that; possibly more expensive than a Nano.
Now the big question is what you exactly did (see @jim-p's reply) so you can prevent it from happening in the future.
It does not output 5V.
You should not have anything connected the OUT wile the battery is charging.
Not sure exactly what happened but connecting it to the nano was a bad idea.
Did you have the nano connected to a PC at the same time you connected the TP4056?
I had noticed that I was just using an OLED I2C screen and a RTC Module therefore, I had thought that a 3.7V Battery would have worked. The last time the battery was being charged was a day before i had connected the OUT. From what I know, I don't think its possible to connect both the PC and the TP4056 at the same time, the TP4056 OUT + and OUT- was connected to a Mini B, which I connect it to the same socket as the one used to transfer code.
OK now I understand what you did but the Nano is expecting 5V to come through the USB connector. What happens when you connect 3.7V, especially on a clone, is unknown, it just may not work or it may damage the Nano.
In any case connecting the TP4056 probably damaged the nano somehow.
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To power your nano from a 3.7V battery you need a boost converter like this
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