I would like help please, been trying for a while to get my 3D printer connected to my windows vista 32 bit, now got the motors working and can control it only from repsnappper at 19200 speed. Not sure if the optos work yet as trying to get heater to work. When I press the heater on it resets the board and I have to click on connect printer again. It seems to show the temperature of the heat block as it shows the same temp as my infared thermometer.

Hope someone can give me some help / ideas.