Matrix user forums

Dear Ben/Steve

Using the LCD board, it is always a trouble to connect the V+ to the mainboard power supply. If I am correct, the power needed of this LCD board can easily be powered by one of the ports A until E of a PIC IC on the main board EB006. If that is true, the V+ can be optionally taken from one pin of the Sub9D connector. There is a small extention necessary on the LCD board, just by extention of the connector P1 with a V+ pin. See attachments.
This introduce also a possiblity to swithc the LCD on/off by the flowcode.

Even if the power of the PIC will not be enough, this extention will be very helpfull in cases the LCD board is used in your own setup, where it is easy to connect one of the two pins left of the sub 9D connector with V+, preventing an apart power line.

Hello Jan

You can put a small wire between pin 6 or 7 of P2 and the +V of the two way screw terminal.

In the flowchart
output : 1 => RC7
delay : 100ms (or less)
macro component : init LCD

but during reset or programming , LCD will OFF.

I use this trick for many homemade Eblocks (joystick, RS485 DMX, I2C, ..).


Daniel