A
amando96
Guest
hi guys, i recently purchased a wireless doorbell, that i would like to mess around with and make a remote control.
i am using this doorbell because it has a range of almost 200 metres! cossing walls, trees etc, so on a clear view it must have even more!
right now i noticed that if i press the button the receiver has a pin wich changes it's state almost exactly like i press the button( i press the button 5 secs, the receiver changes its state for 5 secs, if i press one sec, state changes one sec...)
But if its a really short 1/10th of second press, the receiver doesnt change its state acordingly, i have yet to understand the circuitry, but i think it may be a capacitor that takes a while to discharge...
if i cant get the button to change the state of the receiver acordingly i will have to use a ''normal'' digital pin and write my own code, keeping in mind that the minimum pulse is 2/10th of a second.
So it should be possible, but it would be much simpler if i could just serial print/read, than having to make my own comunication system...
Hoping to get comments, especially help on the converting to TTL logic levels, and oppinions on this project, if its possible, or not worth the hassle.
The receiver has a HEX inverter, heard it isnt good for high speed aplications, how important is it to have this HEX inverter? could i just remove it?
i Have tryed using an optoisolator(4N35), but for some reason when i tie the wires to the LED inside the optoisolator, and press the button, the resistance on the other side of the optoisolator goes down 8K ohm, is the LEd not getting enough power?
thanks, i've been around this for two days... lol
happy new year!
thank you, and happy new year!
i am using this doorbell because it has a range of almost 200 metres! cossing walls, trees etc, so on a clear view it must have even more!
right now i noticed that if i press the button the receiver has a pin wich changes it's state almost exactly like i press the button( i press the button 5 secs, the receiver changes its state for 5 secs, if i press one sec, state changes one sec...)
But if its a really short 1/10th of second press, the receiver doesnt change its state acordingly, i have yet to understand the circuitry, but i think it may be a capacitor that takes a while to discharge...
if i cant get the button to change the state of the receiver acordingly i will have to use a ''normal'' digital pin and write my own code, keeping in mind that the minimum pulse is 2/10th of a second.
So it should be possible, but it would be much simpler if i could just serial print/read, than having to make my own comunication system...
Hoping to get comments, especially help on the converting to TTL logic levels, and oppinions on this project, if its possible, or not worth the hassle.
The receiver has a HEX inverter, heard it isnt good for high speed aplications, how important is it to have this HEX inverter? could i just remove it?
i Have tryed using an optoisolator(4N35), but for some reason when i tie the wires to the LED inside the optoisolator, and press the button, the resistance on the other side of the optoisolator goes down 8K ohm, is the LEd not getting enough power?
thanks, i've been around this for two days... lol
happy new year!
thank you, and happy new year!