Another option might be a USB-to-3.3V LVTTL Serial cable. I hear that some cellphones use such a cable and can be had for very little money.
I don't know if the 5V TTL Serial signals will be safe for your 3.3v peripherals.
Another option might be a USB-to-3.3V LVTTL Serial cable. I hear that some cellphones use such a cable and can be had for very little money.
I don't know if the 5V TTL Serial signals will be safe for your 3.3v peripherals.