Oh i all most forgot comm port is +10 V when he gives signal and -10V when hes not active.
Correction of command for activation MSComm.portopen = true and voltage between pins 5-7 will be +10V when its disabled voltage will be -10V you will need some electronics to make it 0-10, diode and drive relay with transistor and external power supplay just to make sure u dont burn serial port.
I am writing a java program that needs to execute shell commands, so I wrote a function that would take the command to execute as a string (ie: "mkdir ~/Folder1") and execute that command with the shell. Here is the function:
Runtime run = Runtime.getRuntime();
Process pr = ...
Hi, as I was told that my code doesn’t scale well at all, I thought perhaps I’d try to get a better understanding of interfaces/abstract classes and classes and the relationship between them.
I don’t want at this stage work on a big separate project as I've already got plenty ...
Hi. I have a form with list box : lst_product, datagridview : grd_order and button: btn_addline. lst_product has a list of product ids selected from database (MS Acess 2013) , grd_order is by default empty except for 2 headers and btn_addline adds rows to grd_order.