hi , i have been doing this supposedly easy thing for 2 days, without success.
RF Modules (Tx + Rx Pair) 433 Mhz ASKhttp://www.robokitsworld.com/datasheets/TXC1.pdfhttp://www.robokitsworld.com/datasheets/RXD1.pdf
so , i connected these two RF Modules (Tx + Rx Pair) 433 Mhz ASK to the encoder and decoder ht-640 and ht648l.
the problem is that the VT pin of ht-648l never goes high and no data is transfered.
so , i tried to connect directly from ht-640 to ht-648l and still nothing.
from the datasheet it says the operating voltage of these two is 2-12V.
normally i use 5V as the supply.
the weird part is that by accident, i discovered that ht-648l works on 3.5V only, just a slight increase and it shuts off. is the problem with this IC?
so, after it works on 3.5V , i add in the RF modules, and once again nothing happens.
this is the circuit.http://www.rentron.com/PicBasic/8-bit-rf.gifhttp://www.rentron.com/PicBasic/8-BIT-RF2.GIF