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Questions tagged [ch340]

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CH340 is a USB bus conversion chip, it can realize USB to UART interface or USB to printer interface. In serial UART mode, CH340 provides common MODEM liaison signal, used to expand UART interface of computer or upgrade the common serial device to USB bus directly.

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I have a bunch of Arduino Nano boards with the CH340 chip. When I want to upload code to a board, it sometimes works the first time, sometimes it doesn't. Afterwards, it mostly doesn't work anymore. ...
Greenonline's user avatar
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I know this problem has been reported multiple times but in my case I think there is a different light on it. My desktop is a w7x64 box and I also have a notebook with w10. Both system have the ...
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Problem Description: I’m trying to interface a Waveshare 1.69-inch LCD module (ST7789V2 driver, 240x280 resolution) with an Arduino UNO board. I’ve connected all the necessary ports as per the ...
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I am using a Windows 10 laptop. Behind the nodemcu it says that download CH340G driver. I already had arduino ide and the esp libraries were already installed because i was using a esp8266 01 device ...
Ben's user avatar
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I'm trying to connect an Arduino board to IDE on Ubuntu, and I have the following driver log: [ 543.412356] usb 1-2: USB disconnect, device number 3 [ 549.593729] usb 1-2: new full-speed USB device ...
Community's user avatar
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I have a few cheap Nano clones that I bought online that have worked for the past couple of months. They were working fine today until suddenly the Arduino IDE had trouble uploading sketches to them. ...
Gil's user avatar
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3 votes
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I have a Arduino Nano clone working fine with the CH340 drivers. It has a CH340C on it. I made a custom PCB. CH340 chips are hard to come by these days, so I opted for the CH340K, From the datasheet, ...
Matteo Betti's user avatar
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I am having trouble uploading code to my Arduino Nano. It has been very trusty in the past, but I am getting this new error when uploading any code to it: avrdude: ser_open(): can't set com-state for &...
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I bought a this voltage regulator . DC-DC 5v 8A voltage regulator. ıts supported 8-35V input voltage . And i want to use this with 12v power supply. But i searched on the internet . Nodemcu max amp is ...
Aakash Salunke's user avatar
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Arduino UNO R3 My error code: avrdude: ser_open(): can't set com-state for "\.\COM3" An error occurred while uploading the sketch This has been mentioned several times before here in the ...
StanB's user avatar
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4 answers
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I just migrated to a new computer running on an M1 CPU (the new Apple Silicon, arm64 based). I've been searching for CH34x drivers for my TTGO-Lora32 board, but can't find any around, nor can I find ...
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I am working with an Arduino Uno clone that uses the CH340G USB to TTL converter in lieu of the 16U2 found on the Uno. I see that most tutorials suggest downloading the CH340G drivers from what they ...
peterfalk's user avatar
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This is the board I will be referring to. There are different variations of it (with built in buttons etc.) but they all seem to be based on the CH340 chip. My problem is, that I do not know what the ...
RowanP's user avatar
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6 answers
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Reading http://playground.arduino.cc/Linux/Udev there appears to be a way to write out to a FTDI USB-Serial EEPROM to set a given SerialNumber, allowing you to identify a given nano/other arduino to ...
Senthilnathan T's user avatar
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I am getting the Arduino console error "the selected serial port serial.serialutil.SerialTimeoutException: Write timeout does not exist or your board is not connected". I recently upgraded ...
mac11's user avatar
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