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: TTL serial adapter
Zero-wire serial auto-reset for Arduino
A followup to the Modify an off-the-shelf CP2102 module as an Arduino programmer post, Ralph Doncaster writes: Instead of modifying the USB-TTL adapters, I modified the AVR board and the avrdude software to reset the AVR with a break signal. This way just Rx, Tx, Gnd and Vcc are needed.