Tuning an Aurel Module Clone a transmitter
时间：04-06
整理：3721RD
点击：
Hi Everyone,
Having a mega problem with radio modules. I have bought two of the following modules:
http://uk.farnell.com/aurel/rtx-mid-...-3v/dp/1699468
I can get them to send data to each other using a PIC chip. I am now on a mission to clone a transmitter, however it is not working. I been given the coding format, baud rate and it operates on the same frequency. Some important questions I feel that we could all beneift from being answered are:
1. If a module is specified as 433Mhz, will this device be able to successfully activate a reciver specified as 433.92, does the 0.92 Mhz make these units incompatable. I thought about sticking a tuning capacitor between the module and the aerial to see if that would work
2.Is it even possible to add anything to the module to make it compatable with the reciever?
I have 1 fob transmitter, 1 Pic board with module attached and 1 receiver
The pic module can successfully receive from the fob transmitter I am trying to clone, however, when the module tries to transmit to the reciever nothing happens? The Module is transmitting however as it is jamming anything on 433MHz when im trying to transmit.
I plan to put a scope on the receiver and see if I can find some activity, but any suggestions would be greatly appreciated. I am new to RF and boy is it doing my head in lol!
Thanks For Help In Advance :D
Brain Dead
Having a mega problem with radio modules. I have bought two of the following modules:
http://uk.farnell.com/aurel/rtx-mid-...-3v/dp/1699468
I can get them to send data to each other using a PIC chip. I am now on a mission to clone a transmitter, however it is not working. I been given the coding format, baud rate and it operates on the same frequency. Some important questions I feel that we could all beneift from being answered are:
1. If a module is specified as 433Mhz, will this device be able to successfully activate a reciver specified as 433.92, does the 0.92 Mhz make these units incompatable. I thought about sticking a tuning capacitor between the module and the aerial to see if that would work
2.Is it even possible to add anything to the module to make it compatable with the reciever?
I have 1 fob transmitter, 1 Pic board with module attached and 1 receiver
The pic module can successfully receive from the fob transmitter I am trying to clone, however, when the module tries to transmit to the reciever nothing happens? The Module is transmitting however as it is jamming anything on 433MHz when im trying to transmit.
I plan to put a scope on the receiver and see if I can find some activity, but any suggestions would be greatly appreciated. I am new to RF and boy is it doing my head in lol!
Thanks For Help In Advance :D
Brain Dead
People often abbreviate 433.92MHz as 434MHz or 433MHz. I doubt your module is 433MHz - it would be out of the allowed band.
Are you sure the module you are trying to clone uses the same modulation method (ASK)? I guess so if it works one way.
Keith.
Hi Keith,
It uses ASK it is a cheapy chinese controller, it has a chip, saw resonator and a transitor to key on and off the carrier. What is this allowed band you are referring to?
433.05MHz to 434.79MHz is the band allocated for "Short range devices" such as car alarm key fobs.
The band is wide enough that you could have a problem with one device being on a different frequency within the band.
Keith.