Arduino Nano CH340 Clone: Uploading Issues on Windows 7 - Error & LED Status Explained

Question

Hello When it comes to programming, I am fresh like in Arduino programming. I am asking for help in the following matter: Arduino Nano (clone CH340), Windows 7 system, driver installed, after connecting the system sees Arduino as USB-SERIAL CH340 (COM12). When trying to load a program (basic...

Anonymous · Accepted Answer

Of course (!), You are making a mistake; otherwise there would be no problem with uploading the program ... The programmer selected in this method of communication does not matter, because you do not use it at all and this option is ignored. The programmer is used for the programming method via ICSP (MISO, MOSI, SCK, RST) bypassing the bootloader. Programming is done via USB / CH340 / UART (Txd / Rxd) - supported by the bootloader. Are you sure you have the correct options selected: ' board and processor selected are valid '? . Note that Nano / Clone may have a different bootloader than the original NANO (it may be 'old' standard (2k) or newer 'Opti' (512 bits). Try alternatively the latter option, because from your description it is not known what you have. Below you have the way to choose the settings, or try to choose UNO instead of NANO before compiling and trying to enter. One of these options should work properly, and then you will find out what you have installed ... Max limitation program size up to 30720 indicates the use of the 'old' bootloader (2k = 2048). The calculation is: The processor has 32k flash mem., Which is 32768; subtract the bootloader occupation from it, i.e. 32768 - 2048 = 30720 and that's how much it stays on the program. After 'Opti' bootloader takes 512 bits; therefore: 32768 - 512 = 32256 - available memory space for the program. e marcus

adamz74 · Answer

Try pressing the reset button on the board for a moment. Pozdr!

lighter1974 · Answer

Thanks, but nothing has changed; (

khoam · Answer

I uploaded to Nano via CH340 with the AVR ISP programmer set (without mkII).

lighter1974 · Answer

Are you sure you have the correct options selected: ' board and processor selected are valid '? . Note that Nano / Clone may have a different bootloader than the original NANO (it may be 'old' standard (2k) or newer 'Opti' (512 bits). Try alternatively the latter option, because from your description it is not known what you have. Below you have the way to choose the settings, or try to choose UNO instead of NANO before compiling and trying to enter. After changing the tile to OLD it helped. Thank you so much for the tips and help.

Anonymous · Answer

Well now enter the new bootloader OPTI and you will have a fully-stable plate -UNO, much faster in programming; 115200 baud instead of 57600 and slightly more available flash memory (difference of 1.5k). If you have two tiles, use one for the temporary programmer for the other. It is not a long or complicated process ...

Wlodek22 · Answer

It's so easy that I spent the night on it and still no result. I just dug up to this but will it help?

kaczakat · Answer

To upload a new bootloader to Arduino, the easiest way to use the clones of the USBASP programmer (troublesome in the Arduino IDE> 1.8.5, but there is information on the forum how to override AVRDUDE) or AVR ISP MKII. You can also make a programmer from another Arduino, description e.g. here: link and there are a lot of tutorials on Youtube, e.g .: link .

Wlodek22 · Answer

I have two identical nano clones and tried to upload via ISP, but I can't. Just like the first time you started without a variable on Old bootloader, the signature doesn't match. And no matter whether we choose the old or new bootloader, it always ends in error.

kaczakat · Answer

Either you have damaged equipment or you can't upload. Describe how you do it, assuming that I just landed on Earth and I have no idea how to do it, and you want to explain to me how, upload your error log (with full messages set in options), show the connection diagram you use, maybe someone will notice where do you make a mistake. As, for example, I used AVR LAB ++ with a programmer made on NANO, the only acceptable speed was 115200 (in the example sketch it is 19200). The AVRDUDE version from Arduino may also be a problem, you have to replace it with the one from AVR LAB ++ 2.4.

Wlodek22 · Answer

In the end I bought a USBasp programmer and uploaded it the first time. Thank you for your willingness to help.

kaczakat · Answer

You don't do exactly the same, the guy uses Arduino 1.8.3.

Wlodek22 · Answer

He had one with the new bootloader, and I had both left, probably because it was impossible to upload

kaczakat · Answer

The bootloder is invalid in this programming mode, the AVRDUDE version is important, the new one does not support Arduino ISP and USBASP, at least that was the case with me. After installing newer as USBASP does not work, replace AVR DUDE, I recommend the one with AVR LAB link , exe and configuration file in Arduino are in different directories. You can have more errors, the easiest way to invest is in USBASP. If you have an Arduino Micro, you can also do the MKII programmer described by me here: link , works in the new version of AVR DUDE without a problem and Atmel Studio 6 and 7.

Wlodek22 · Answer

I bought USBasp, connected the cables, in arduino I chose this programmer (USBasp) and it uploaded without problems. I did not install AVRDUDE and I see that I have avoided additional problems.

khoam · Answer

What version of Arduino IDE do you have installed?

Wlodek22 · Answer

1.8.8 (Windows Store 1.8.19.0) Installed from the Microsoft Store

kaczakat · Answer

They probably removed this bug in a newer version.

Wlodek22 · Answer

Not having a clue about C ++, here's what I was able to engineer for two days, where I spent one and a half trying to read the wrong modbus register.
It is a two-phase energy monitor based on the Chinese PZEM-016 on rs485. Made in FLprog program.

[Solved] Arduino Nano CH340 Clone: Uploading Issues on Windows 7 - Error & LED Status Explained

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