Understanding the electronic doorbell circuit.
By Julian
Youtuber, shed dweller, solar charge controller aficionado
Good morning all…
Youtuber, shed dweller, solar charge controller aficionado
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Cool! I like it!
I would put a 100R resistor in series with the speaker.
I think it needs a big low pass filter to sound a bit nicer.
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hi J I…
i have one DIY doorbell sound kit…
one mode sound…
can work with 3 volts to 6 volts only…
great work with 6 speakers with LED lights
How can I connect wired push button switch
I recommend the 9 volt battery is depleted to 6 volt hence why it starts working. Is what I think has most likely happened.
I used your circuit diagram, I am getting a continuous beep sound not ding dong sound.
I have no clue why?
When you said "It Works Nooww!" and pressed the button I was expecting it to fail. Because that would have been utterly hilarious.
I'm pretty sure it says" Ni-hao"
Got this bell haha, very cheap indeed. My idea was to make it a simple cable tester by replacing the button with two wires.
I have a non functional one, and am using it to learn electronics with my son. I measured voltages at the chip and some other locations and all seems well yet no sound or effect when the button is pushed. Still working on it, hopefully we will figure it out. I can hear the speaker crackle as well when the battery is plugged in…
I'm looking to use a wireless door bell and it's remote as a mail box alert system, but, need info on how to modify the bell with a visible indicator (e.g. light or led) which will stay lit until I manually deactivate it. Any ideas? Thanks
Thanks Julian always nice to watch your video clips
Great Video Julian. Fantastic BigClive Schematics As Well. Keep up the great work. Nick.
Nice work …….. great " dissection " . Now ………… can you get a pie , to go with the pad ?
I just put togther a circuit to flash some leds for the garden, the flash signal comes froma 555, and I have the same problem as you, the 555 gets hot, all connections are correct, but the chip heats up, I have the 10nf on pin 5.
Is the 555 in yours a signetics like mine is?, maybe a bad batch.
The plot thickens. I set about replacing the 100uF cap as suggested by Joe Loucka. I removed it but before installing something smaller, I connected the 9volt battery remembering that the output (pin 3) is now open circuit. What do you know, the chip got hot! The idle current is 96 mA. I inserted my NE555N and the idle current is 8.6mA. The NE555P is obviously shot. I am at a loss as to why the original chip in Julian's kit came good. (Joe and other contributors of other posts have also had chips recover) I will play around with my NE555P. I think I'll study its specs.