Pira.cz Technical Forum
General Category (This section is not monitored) => FM Transmitters, RF Amplifiers => Topic started by: radium98 on October 18, 2015, 08:23:45 am
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Hi can you help me for connection from pcb in J5 to the lcd i mean wich pin to wich pin please thanks.
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please advise me some help with schematic or real wiring from tx to lcd :-[ :'(
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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-
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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
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any more help please.
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Pin 1 on the TX module to pin GND on your LCD.
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Thanks Host.So pin to pin.
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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 .
(http://i.imgur.com/nWFSNQN.jpg)
(http://i.imgur.com/A6cfrmj.jpg)
(http://i.imgur.com/XbQ6Qxk.jpg)
(http://i.imgur.com/0OvfQmB.jpg)
I am waiting ure help please to invastigate .
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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).
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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
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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.
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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
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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 :-[ :-\ :'(
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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.
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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 .
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i dunno what is the problem i need wire to wire connection in invastigate pleaaaaaaaase. :'( :( see my pictures
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I have no idea what else you need. The wiring has been already published in this thread. There are pin numbers 1 to 16 on the transmitter's connector and pin numbers 1 to 16 on the LCD connector. Everything you need to do is to connect 1 to 1, then 2 to 2 etc. What I see on your last photo is something far away from the working connection.
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please jan if you can take me a close pictures for the lcd of the transmitter you have made so i can see the connection clearly .thanks btw how i will connect pin to pin when i can see 4-5 pins to ground and i must connect them on lcd where is no ground
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Ok, so here's the connection:
1 - 1
2 - 2
3 - 3
4 - 4
5 - 5
6 - 6
7 - 7
8 - 8
9 - 9
10 - 10
11 - 11
12 - 12
13 - 13
14 - 14
15 - 15
16 - 16
16 wires total.
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heheheh Thanks JAN i am sorry .i get new wires and i will recheck all sorry for disturbing you man .Great help
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:D ;D Jan rewiring again with new good connection i can see the frequency on lcd with pira.cz.
Bad news i have VCO but not locking on any frequency i will rewound L1 i think it must be 4 wounds and not 3 i use single side pcb i will let you the results thanks.
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https://www.youtube.com/watch?v=ifyUJ71V3Z4&feature=youtu.be
thanks have some little modifications after :)
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Hello again what do i need as a simple software to put my name at startup i want to try that please help me
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any help ?
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https://www.youtube.com/watch?v=lu7aWDGs1IQ&feature=youtu.be
help me pleaseeeee to put reve fm REVE FM at start up power up tx