Turning a USB to RS232 adaptor into a USB to TTL serial adaptor by Aaron Brady: I didn’t want to wait, so I had a look around what we had on hand. We did have a spare RS232 to USB adaptor. This one speaks the full ±15V, and I briefly considered using one of the spare […]
Tag Archives: rs232
USB MultiComms part one – USB Board
Brian Dorey has been working on a USB communications box project: Several of the projects we have been working on recently needed some form of serial communication with our PC, either through RS232, UART, I2C or SPI and at the moment we use a handful of different USB to serial adapters designed for each different protocol. One […]
USB to serial adapter in DB9 footprint
There aren’t many simple ways to add a USB interface to a project using only through-hole parts. This USB-serial adapter from FTDI has the same shape and pinout as a through-hole serial connector. It’s a little pricey (~$22), a USB->serial cable is usually cheaper, but it’s a nice option for a professional-looking USB device without […]