hey all
i'm working on a project that involves a small rf relay that can be controlled by a rf remote controll
i bought it on aliexpress
it work great, but now my project evolved and i need to find a way to turn the relay ON
without the remote control, only ON.

any suggestions on what circuit do i need to momentarily shorten to get the relay to become ON?

i can provide better pic's if needed

 

The RF signal is normally coded so that interfering signals do not randomly switch the relay. This code is recognised by an on-board micro-controller.

So, it is not possible to to do what you want without re-programming the on-board micro-controller. Which will likely be impossible!

 

i agree, but.....
the coding is on the rf receiver side, the relay circuit just gets a simple single from the rf module to
open or close.
this relay is basically 2 modules, RF receiver that is attached to the relay module
if i can just find a place to short-circuit on the relay module, i think it will work

but hey, im not a electronics engineer so...
hope for the best


danny

 

Just put a switch on the receiver that powers the coil, there is more than likely a transistor Q1 that powers the relay.

 

If what I thought was right then you can take the input signal away (keep the resistor of the base of npn transistor), and connecting the pin of resistor to the 12V and then it will drive the relay to works.

 

Just provide another relay or switch that shunts the contacts? No mods necessary.

 

thanks for the replays
but can somebody direct me to over the image? to what needed to be shorten?

 

If you take close up pictures of the relay track side and component side, we can direct you better.

 

thanks, a made as many as a could
if you need more, or something spesific, just tell me ill take a photo

 

i need to find a way to turn the relay ON
without the remote control, only ON.

I have no idea what "turn a relay ON" means. Closed? Open?

If you want the relay to be closed,

1) you can simply wire the 220v side directly, by-passing the whole thing; or
2) you can hard-wire the coil so that the relay is always energized.

 

the relay has a starting position NO or NC
after you press a button on the transmitter remote the relay switches from NC -> NO an vice versa
im trying to find a way to make the rely board think that it got a signal from the transmitter to activate the relay without really using the transmitter


danny

 

I already told you that on #5, if you still don't get it then you can draw the circuit from relay and transistor and its Rb.

 

I already told you that on #5, if you still don't get it then you can draw the circuit from relay and transistor and its Rb.

yes, but it will make the relay work momentarily, when i remove the connection from the ressitor to the relay
the relay will switch back to his original state
and i need it to stay in NC state until i push the off button on the transmitter


danny

 

So what you need is a flipflop using a 555 timer chip like this......




make the bulb your relay.

 

i think i wasn't understood
i will use the transmitter (remote with OFF and ON butn) and i need it

but

i also want to be able to use the rf relay without it say, manual mode

 

Then just short the relay contacts out or power the coil with 12v,...

 

i also want to be able to use the rf relay without it say, manual mode

Just exactly are you trying to do?

Sounds like you want to control the relay manually and (or?) via the rf remote? If the two commands conflict with each other, how should the circuit do?