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Replacing FTDI with CH340 chip?

Posted by o_lampe

o_lampe

Replacing FTDI with CH340 chip?
May 21, 2018 03:39AM

Registered: 8 years ago
Posts: 5,232

I have these ESP8266 WiFi boards with CH340 USB to serial interface and they are much faster than I'm used to, from these FTDI chips or the atmega16U2.
Their Baud rate is up to 921600....much faster SD-card uploads grinning smiley

I wonder if there's a chance to bypass these chips and use a standalone USB to serial interface with CH340 chip instead?

Edited 1 time(s). Last edit at 05/21/2018 03:40AM by o_lampe.

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Dust

Re: Replacing FTDI with CH340 chip?
May 21, 2018 05:43AM

Admin
Registered: 13 years ago
Posts: 7,001

Depends what your connecting to..

RAMPS its very easy just connect a 5v RX and TX signals to DO and D1 on AUX-1

You got to watch the baud rates though, some are just to far out of spec for a 16MHz atmel
check the baud rate you want with [wormfood.net]

Many mega2560 clones already have ch340 usb/serial chips

Also the standard ftdi chip can actually do up to 12MBaud (drivers are the issue, see [www.ftdichip.com])

Edited 3 time(s). Last edit at 05/21/2018 05:50AM by Dust.