pira 5w txer LCD connection

[radium98]

Hi can you help me for connection from pcb in J5 to the lcd i mean wich pin to wich pin please thanks.

[radium98]

please advise me some help with schematic or real wiring from tx to lcd 

[Jan]

This is a standard connection to the HD44780-based LCD, i.e.:

1   GND
2   Vcc
3   Vee (contrast)
4   RS
5   R/W
6   E
7   DB0
8   DB1
9   DB2
10   DB3
11   DB4
12   DB5
13   DB6
14   DB7
15   LED+
16   LED-

[radium98]

Dear Jan thanks for the reply sir.

but i am a bit confused yes this configuration pin i know it afte a datasheet look but my question from the 5w pll pira.cz tx is it :pin 1 from tx  to pin one on lcd and so on ? please confirm .
thanks regard

[radium98]

any more help please.

[Host]

Pin 1 on the TX module to pin GND on your LCD.

[radium98]

Thanks Host.So pin to pin.

[radium98]

please help me i am so bored from this statut .

i only cab see dots on the screen i have vfo i have output but no pll at all i have used 16f627 and not 16f627a does it matter ?

second olease help with the connection maybe i have made an error .









I am waiting ure help please to invastigate .

[Jan]

The LED must blink on power up and each time you press any button. If this basic functionality is not present, it is premature to solve LCD or PLL as the PIC is not working at all (damaged or not programmed successfully).

[radium98]

thanks Jun i will change pic and i will reprogram again but one question please consider to tell me the pins of the lcd one by one from the tx board
eg : 1 to pin one of lcd ground

because i have i think a doubt of them.

thanks

[Jan]

Usually the pin numbers are equal but there are some LCD modules on the market which have different pin assignment. However I don't think this is your case.

[radium98]

Jan as i see on the schematic from pin 1 to 16 its okey but all of them are used from the transmitter to the lcd are they in order .i am unable to see pira on the screen .please can u take a closer picture for conection between lcd and transmitter thanks.BTW we bought 2 pieces of pira175 last year we plan and 3 mini rds we plan to buye in the next year a rds

[radium98]

Jan you are right the led wasnt blinking flashing at startup the pic was burnt out now i get a new pic16F627 with xtal 6.4mhz succussfuly hex loaded i have little flashing at start up but i still have dots only when i put the lcd so my connection are wrong please help me in

[Jan]

Some wire to LCD is probably broken or there's a short circuit somewhere. I think that any multimeter with beep function will help you better.

[radium98]

Jan bro we have a miss understand in between.its not a short circuit somewhere the problem is only i have mistaken some data wire so give them to me please .wire wire from tx to lcd .