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I dug into this module, it needs to be paired apparently, there are detailed instructions, only in chinese, I had to picture translate the chinese text from a video of a chinese youtube-like site, it was burried as hell. This BT module can also receive AT commands as shown on the videos, shame I...
It is called 'Bluetooth 4.0 12V Proximity Switch Sensor Module' I found it on ebay, it operates with 12V, and it has a single relay, there is a NC and NO state, and a common feed(which I use with 12V) once the phone connects to it closes the NO state on the relay, if it disconnects it goes back...
Hey!
I'm building a bluetooth proximity garage door opener.
I've got a bluetooth relay modul which has a NO and NC state, once the bluetooth connects the relay closes, however it provides constant 12V after connecting, and I only need a momentary signal(like a button press on my remote) for my...
Hello guys!
After several hours of searching I've decided to ask the community about something I'd really like to find out.
I've disassembled a small electric box (ccfl inverter) to fix some loose wiring, I've noticed that it was filled from top to bottom with a thick grey rubbery compound I've...
Hey guys!
I'm trying to start a new project which involves a proximity sensor but I'm dont really have a clue how to start.
My idea basicly is, theres a small key like thing in my pocket, and when I get close to the sensor(about 3 meters) it recognizes it and turns on a switch, and when I leave...
I was once told to use a 555 timer but since i never really learned electronics(apart from the very basics which are required for a car mechanic) I dumped the idea when I saw how complicated the 555 timer actually is(alll those pins) to be honest I am very interested in learning these things as...
Bias resistor as in resistor that is before the transistor? Im gonna play with the simulation hopefully the physical one will be as good as it :D Also one more question, if I dont use a transistor for the circuit, I would need a reeeeally big capacitor dont I?
I've tried recreating the same simulation with the same values and also adding my bulb to the relay. It doesnt seem to work, the coil is always energized
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I think I figured it out... the CLK gives half second 12V pulses, the relay coil remains energized for about a second...
Actually I misread, its 600mA :D It'll be still okay I guess...I'm gonna play around with different capacitors.
Still I dont understand the connection after the transistor on this picture of simulation a member showed me:
theres no ground on the relay coil? or am I just confused too much
Im using a 12v relay OMRON G5SB-1 12VDC, according to its datasheet it needs 33mA, so i suppose the 2n2222 will work with this and without any resistors? (The 12v comes from the vehicle light so its stable, it wont go up to 14.3v as the generator chargers the battery)
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also...
One more question, what kind of transisto should I use? What kind did you use in your simulation? and also I see that the relay coil has no ground, or I'm just seeing it wrong?
You guys are the best! Thank you very much for your help, once my project is up and running, Ill post result and you guys will be credited for your help!
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