Thanks, BMoW.
This is simillar to the one I got; the two end signals are different, but Tx, Rx, VCC and GND are on the same place on the header - easily to hook up to a serial port. But what's the baud rate, software used to connect, and other fine details. And I got it from ebay for $2 - with free shipping! (OK, I had to solder the headers in but that's minor). Radio Shack sells these for $45? Guess who I'm ordering from!) Plus the other Tx and Rx on the other header are for a second serial port on this model similar to the Arduino Mega and Leonardo with 2 serial ports. (I did not test out the 2nd serial port); the one on the end header usually goes to a USB to TTL-serial adapter. All this on a tiny package of 1.5in X .75in, it's not bad. The VCC needs to be regulated 5V though it can run at 3.3V since it does not have a regulated power supply area. But for $1, Ebay has a tiny (.75in X .25in) voltage regulation board - up to 12v goes in, regulated 5v goes out.
It would be nice to get an older Mac to compile and program the Arduino, not just send commands to it though this is a great start.
This is simillar to the one I got; the two end signals are different, but Tx, Rx, VCC and GND are on the same place on the header - easily to hook up to a serial port. But what's the baud rate, software used to connect, and other fine details. And I got it from ebay for $2 - with free shipping! (OK, I had to solder the headers in but that's minor). Radio Shack sells these for $45? Guess who I'm ordering from!) Plus the other Tx and Rx on the other header are for a second serial port on this model similar to the Arduino Mega and Leonardo with 2 serial ports. (I did not test out the 2nd serial port); the one on the end header usually goes to a USB to TTL-serial adapter. All this on a tiny package of 1.5in X .75in, it's not bad. The VCC needs to be regulated 5V though it can run at 3.3V since it does not have a regulated power supply area. But for $1, Ebay has a tiny (.75in X .25in) voltage regulation board - up to 12v goes in, regulated 5v goes out.
It would be nice to get an older Mac to compile and program the Arduino, not just send commands to it though this is a great start.