i have a problem, i have a 433 MHz transmitter / receiver pair module. they are lying around for about an year. now i have no means of testing them. how can i test them? any help ??
i have a total of 3 receivers and 5 transmitters. all are not functioning properly, i have a query, these things come in pairs. will it work with other modules having the same frequency (433 MHz)?
i had tried the first method, sending a bit 1 through the module. but, its not received on the other end. i checked if there is any signal from my module by tuning my tv to 433 Mhz, but no artifacts . is there any other method?
Don't turn them on all at once. That'll jam the receivers. Supply one transmitter and one receiver only. Then you apply a voltage (I usually just use a 3V supply with a 1k resistor in series and apply the voltage on the Tx pin.)
As for the TV, I wouldn't bet that it'll poke the TV receivers. They have their own modulation and filters and all those monsters inside.