The cheapest USB to serial chip on the market appears to be the CH340G, available for 20-40 cents apiece from the usual retailers. There is, however, almost no English documentation, and the ...

This is a CH340G based board that converts USB to Serial. It follows the standard Arduino pin out so this can be used to program the Pro and Pro Mini line of Arduinos. It can also be used as a general ...

We know, you’ve already got a USB to serial adapter. Probably several of ... All of the lines coming from the CH340G chip are broken out to a header so you can connect it up to whatever device ...

USB serial driver for USB to UART chip ch340, ch341, etc. ch341 supports multiple working modes, this driver only supports its serial port mode. In fact the ch341 serial driver has been built-in since ...