wireless receiver transmitter setup

[gurjant.sandhu33]

i have a 433 mhz wireless tx rx kit but i am not able to get it working.
please can any one refer me a circuit.
the image of kit is attached below.
and, does it need arduino or pic board to run or can it be used without them.

 

[BobK]

A link to a datasheet might help us answer.

Bob

 

[gurjant.sandhu33]

i tried very hard but i was not able to find the datasheet
but model is- xy-mk-5v

 

[BobK]

Well, with no information about it, I don't see how anyone can help.

Bob

 

[jpanhalt]

Googled: xy-mk-5v 433mhz

Got lots of hits. The first several were related to an Arduino forum. Here is the first one: http://forum.arduino.cc/index.php?topic=129749.0

Apparently, it is just CW at 433 MHz and does not have any coding ability built in, so you will get lots of interference. One of the other links also sells the HT12E and HT12D to give coding and reduce interference (http://www.ventor.co.in/index.php?main_page=product_info&products_id=261).

Without an antenna, range will be extremely limited and without some method to code, you will have just one, on/off (when you are lucky) function. By itself, it is probably not suitable for an RC car.

John

 

[gurjant.sandhu33]

i am sorry sir that i was not able to give you details about it

 

[gurjant.sandhu33]

@jpanhalt
sir i have the encoder(ht12e) and decoder(ht12d) but i was not able to get tx rx working.
I have also made a pic microcontroller board using PIC16f873.
can i use the tx and rx with microcontroller

 

[jpanhalt]

Yes, a microcontroller can be used with the TX and RX that you have. That is basically all that the HT12 chips are. Google on software UART.

However, if you can't get the receiver and transmitter working at all, then adding an additional layer of complexity isn't going to help. Have you checked any of the links to be sure you wired the modules correctly?

John

 

[gurjant.sandhu33]

yes i have checked many links but all in vain
could it be possible that my tx rx are damaged . if so then how can i check that they are working.

 

[jpanhalt]

Yes, it is possible the part(s) are damaged. But it is also likely they are not set up properly.

Please show us how you set up the RX and TX and what you did to show they are not working. A schematic would help.

John

 

[gurjant.sandhu33]

these are the attachments i used.

 

[jpanhalt]

Well, if you are sure those are the same pinouts as on the units you purchased, it should work. I have used the ones you show in your post #11. But, are you really sure?

Please post what YOU did.

John

 

[gurjant.sandhu33]

i bought the encoder decoder board from following seller

http://www.ebay.in/itm/RF-encoder-d..._203&hash=item41731b7895&_uhb=1#ht_1227wt_952

the decoder board have an led connected to vt pin of ht12d which blinks when the tx is also connected to supply and do not blink other wise.
so i now think that the tx rx pair must be alright.
but when i connect 4 leds to data pins of decoder board they are always on.
and do not turn off even when the four switches connected to the encoder board are pressed.